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# Vaisala-RS-41-SGP-Modification.
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Vaisala RS-41 SGP Modification.
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<!DOCTYPE html>
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<html class="no-js" lang="en">
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<meta charset="utf-8">
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<meta http-equiv="x-ua-compatible" content="ie=edge">
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<title>Vaisala RS-41 SGP Modification</title>
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<meta name="description" content="">
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<script src="js/vendor/modernizr-2.8.3.min.js"></script>
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</head>
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<body>
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<!--[if lt IE 8]>
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<p class="browserupgrade">You are using an <strong>outdated</strong> browser. Please <a href="https://browsehappy.com/">upgrade your browser</a> to improve your experience.</p>
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<![endif]-->
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<div class="wrapAll clearfix">
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<div class="mainsection"><br>
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<div class="article">
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<h1><font style="font-size: 20pt" size="5">Vaisala RS-41 SGP
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Modification.</font> </h1>
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<p class="siteSub"><br>
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</p>
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<div class="articleRight"> <img src="img/rs41.png" alt="rs41"
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width="71" height="130"><br>
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Viasala RS-41<br>
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</div>
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<p style="user-select: auto !important; margin: 0px 0px 20px;
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padding: 0px; border: 0px; outline: 0px; font-size: 15px;
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vertical-align: baseline; background: 0px 0px rgb(255, 255,
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255); color: rgb(68, 68, 68); font-family: "Helvetica
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Neue", sans-serif; font-style: normal;
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font-variant-ligatures: normal; font-variant-caps: normal;
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font-weight: 300; letter-spacing: normal; orphans: 2;
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text-align: start; text-indent: 0px; text-transform: none;
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white-space: normal; widows: 2; word-spacing: 0px;
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-webkit-text-stroke-width: 0px; text-decoration-style:
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initial; text-decoration-color: initial;">Radiosondes are
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light weight sensor packages that are attached to weather
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balloons. <br>
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They transmit live RF weather telemetry down to earth as
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they rise. <br>
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One related hobby that a few people enjoy is radiosonde
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chasing, which is tracking and collecting radiosondes once
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they have fallen back to the earth. <br>
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Some people collect them as trophies, and others like to
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repurpose them.</p>
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<p style="user-select: auto !important; margin: 0px 0px 20px;
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padding: 0px; border: 0px; outline: 0px; font-size: 15px;
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vertical-align: baseline; background: 0px 0px rgb(255, 255,
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255); color: rgb(68, 68, 68); font-family: "Helvetica
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Neue", sans-serif; font-style: normal;
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font-variant-ligatures: normal; font-variant-caps: normal;
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font-weight: 300; letter-spacing: normal; orphans: 2;
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text-align: start; text-indent: 0px; text-transform: none;
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white-space: normal; widows: 2; word-spacing: 0px;
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-webkit-text-stroke-width: 0px; text-decoration-style:
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initial; text-decoration-color: initial;">Another way to
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repurpose radiosondes is to reprogram the commonly used
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Vaisala RS-41 radiosondes into being able to transmit radio
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APRS, 4FSK, RTTY or CW mode signals in the ISM or HAM bands.
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<br>
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The initial modified firmware was first performed by SQ5RWU,
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and then OM3BC who managed to create firmware able to
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configure settings thru the serial connection off the
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radiosonde.<br>
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Darkside did also modified firmware and added a very
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promising demodulation mode 4FSK, which not only decrease
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the package size but also has better coverage. <br>
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This firmware could be useful for anybody requiring a cheap
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transmitter for their own high altitude balloon experiments.<br>
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</p>
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<p style="user-select: auto !important; margin: 0px 0px 20px;
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padding: 0px; border: 0px; outline: 0px; font-size: 15px;
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vertical-align: baseline; background: 0px 0px rgb(255, 255,
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255); color: rgb(68, 68, 68); font-family: "Helvetica
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Neue", sans-serif; font-style: normal;
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font-variant-ligatures: normal; font-variant-caps: normal;
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font-weight: 300; letter-spacing: normal; orphans: 2;
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text-align: start; text-indent: 0px; text-transform: none;
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white-space: normal; widows: 2; word-spacing: 0px;
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-webkit-text-stroke-width: 0px; text-decoration-style:
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initial; text-decoration-color: initial;">Also it is
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possible to enter the service menu of the Vaisala RS-41
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Radiosonde to learn more about its operation.<br>
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</p>
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<br>
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<div class="contentsPanel">
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<div class="contentsHeader">Contents</div>
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<ul>
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<li> <span>1</span>Overview
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<ul>
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<li><span>1.1 <a href="#Hardware_Details_">Hardware
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Details</a></span> </li>
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<li><span>1.2 <a href="#Needed_Stuff_">Needed
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stuff</a> </span> </li>
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<li><span>1.3 <a href="#RS-41_Connector_">RS-41
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Connector</a><br>
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</span></li>
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<li><span>1.4 </span><a
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href="#ST-Link_STM32_Connection_">ST-LINK STM32
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Connection</a></li>
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<li>1.5 <a
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href="#Orginal_Firmware_and_Terminal_Connection">Orginal
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Firmware and Service Menu </a><br>
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</li>
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<li><span>1.6</span><a href="#Firmware_">Modified
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Firmware</a> </li>
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<li><span>1.7 <a href="#Program_and_Flashing_">Program
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and Flashing</a></span></li>
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<li><span>1.8 <a href="#Horus-Decoder_">Horus-Decoder</a><br>
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</span></li>
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<li><span>1.9</span><a href="#OM3BC_Firmware_">OM3BC
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Firmware</a><a href="#Zilog_DFM_Decoder_Scripts_"><br>
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</a></li>
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</ul>
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</li>
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</ul>
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</div>
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<h2><a name="Hardware_Details_"></a>Hardware Details<br>
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</h2>
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<br>
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The radiosonde RS41-SG was introduced by Vaisala in 2013. <br>
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On <a
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href="https://www.vaisala.com/en/products/instruments-sensors-and-other-measurement-devices/soundings-products/rs41"
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target="_blank">Vaisala's website</a> it is possible to find
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very detailed specifications of the RS41-SG.<br>
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<br>
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<p style="margin-bottom: 0cm">LED Lights operation.</p>
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<p style="margin-bottom: 0cm">Red LED:<br>
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1 - Temperature or humidity sensor broken.<br>
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2 - Low battery.<br>
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3 - Battery should be empty.<br>
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4 - Expected interface, but there is none.<br>
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<br>
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Flashing Green LED:<br>
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</p>
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<p style="margin-bottom: 0cm">Insufficient data for GPS
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positions.<br>
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<br>
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After switching on the RS41, the LED will flashes four
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times.</p>
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<p style="margin-bottom: 0cm">Flashing Green LED:<br>
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1 - Turns red when something is wrong.<br>
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2 - Enable transmitter.<br>
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<br>
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When the Radiosonde is flying over 100 seconds,</p>
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<p style="margin-bottom: 0cm">1 - The LED goes out.<br>
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2 - And the transmitter operates at full power.</p>
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<br>
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<a href="https://github.com/bazjo/RS41_Hardware"
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target="_blank">RS-41 Details Thanks to Bazjo</a><br>
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<h2><a name="Needed_Stuff_"></a>Needed Stuff<br>
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</h2>
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<div class="articleRight"> <img
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src="img/rs1.png" alt="rs41" width="79" height="270">
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<br>
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RS-41 SGP
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<br>
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</div>
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<br>
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USB-TTL converter.<br>
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Some wires and connectors.<br>
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Soldering tools.<br>
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ST-LINK STM32.<br>
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<br>
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<h2><a name="RS-41_Connector_"></a>RS-41 Connector<br>
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</h2>
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<br>
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<img src="img/RS41pinout2.jpg" alt="" width="385" height="354"><br>
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<br>
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<p style="margin-bottom: 0cm">1 - GND</p>
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<p style="margin-bottom: 0cm">2 - Uart3 Rx</p>
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<p style="margin-bottom: 0cm">3 - Uart3 Tx</p>
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<p style="margin-bottom: 0cm">4 - PB1 * (10k + cap + 10k)</p>
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<p style="margin-bottom: 0cm">5 - Vcc (Boost out) 5.0V</p>
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<p style="margin-bottom: 0cm">6 VBAT 3.3V</p>
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<p style="margin-bottom: 0cm">7 - RST</p>
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<p style="margin-bottom: 0cm">8 - SWCLK</p>
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<p style="margin-bottom: 0cm">9 - SWDIO = SWID</p>
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<p style="margin-bottom: 0cm">10- GND</p>
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<br>
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<h2><a name="ST-Link_STM32_Connection_"></a>ST-Link STM32
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Connection<br>
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</h2>
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<p> <br>
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Download ST-LINK STM32 Software <a
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href="http://www.st.com/en/development-tools/stsw-link004.html"
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target="_blank">http://www.st.com/en/development-tools/stsw-link004.html</a><br>
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</p>
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<p style="margin-bottom: 0cm"><br>
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</p>
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<img src="img/ST-Link-V2-STM8-STM32.jpg" alt="stm" width="220"
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height="220"><br>
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Connect ST-LINK STM32:<br>
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<br>
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<p style="margin-bottom: 0cm">RS41 ----- ST-LINK</p>
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<p style="margin-bottom: 0cm">===================</p>
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<p style="margin-bottom: 0cm">Pin 1 ----- GND</p>
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<p style="margin-bottom: 0cm">Pin 8 ----- SWCLK</p>
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<p style="margin-bottom: 0cm">Pin 9 ----- SWDIO = SWID<br>
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<br>
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</p>
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<p style="margin-bottom: 0cm"><img src="img/conn.jpg" alt=""
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width="215" height="258"><br>
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<br>
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</p>
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<img src="img/ST-LINK.jpg" alt="" width="436" height="326"><br>
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<br>
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<h2><a name="Orginal_Firmware_and_Terminal_Connection"></a>Orginal
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Firmware and Service Menu </h2>
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<p style="margin-bottom: 0cm"><br>
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</p>
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For a terminal connection the following data pins are
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connected to the USB TTL Serial Converter in order to enter
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the service menu:<br>
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<br>
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<img src="img/sku_224704_1_small.jpg" alt="" width="140"
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height="140"><br>
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<br>
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<p style="margin-bottom: 0cm">Pin 1 ----- GND</p>
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<p style="margin-bottom: 0cm">Pin 2 ----- TxD</p>
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<p style="margin-bottom: 0cm">Pin 3 ----- RxD<br>
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</p>
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<p style="margin-bottom: 0cm"> Pin 4 ----- 3.3V<br>
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Or:<br>
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</p>
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Pin 5 ----- 3.3V<br>
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<img src="img/RS41pinout.jpg" alt="" width="346" height="490"><br>
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<br>
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<p>Build together -><br>
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</p>
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<img src="img/Terminal_connection.jpg" alt="" width="358"
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height="477"><br>
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<br>
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Connect a terminal (9k6 8N1) to the XDATA UART port. <br>
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<p style="margin-bottom: 0cm">Select COM Port (most probaly <a
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href="http://www.prolific.com.tw/US/ShowProduct.aspx?p_id=225&pcid=41"
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target="_blank">Prolific driver</a> is needed on Windows)
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.</p>
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<p style="margin-bottom: 0cm">Start (hyper)terminal like Putty
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and connect to serial COM Port and use 9600 Baud.</p>
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<br>
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<p>Power on RS-41, Welcome message should appear with
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information about software version, serial number, etc: </p>
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<p>Vaisala RS41 Radiosonde SW
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||||
V2.02.14
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<br>
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Copyright (c) Vaisala Oyj 2016. All rights
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reserved.
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<br>
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Serial number: P1234567
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<br>
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Pressure module serial number: Px SW
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V2.01
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<br>
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Transmitter frequency: 403.90
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MHz
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<br>
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Transmitter power:
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3/7
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<br>
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Enabled TX <br>
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</p>
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<br>
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Now enter the following five characters and press Enter :<br>
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<p style="margin-bottom: 0cm">STwsv<br>
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<br>
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Press ENTER again and you should see a service menu.<br>
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Where you can change the TX power, frequency and more
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options.</p>
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<br>
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(S)ensors
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Fre(q)uencies (P)arameters
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(A)lfa
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TX p(o)wer<br>
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TX (f)requency T(X)
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state (T)X registers TX
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contin(u)ous TX ran(d)om<br>
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||||
TX (c)arrier (B)aud
|
||||
rate Ser(i)al no
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(R)ed LED info (N)o menu<br>
|
||||
(K)eep test mode S(W) version
|
||||
(M)easurements (L)aunch/Drop (E)xit<br>
|
||||
>Enabled TX<br>
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<br>
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A few examples:<br>
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<br>
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||||
X Transmission of the data is stopped.<br>
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||||
o Change power level 0 - 7.<br>
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||||
f Change Frequency.<br>
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||||
i Change Serial Number<br>
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||||
K Keep test mode, with this setting you do not have to re
|
||||
enter the pw again in order to show the service menu.<br>
|
||||
M Measurements show the following menu:<br>
|
||||
<br>
|
||||
(S)ensors Fre(q)uencies S(W)
|
||||
reset (D)efault
|
||||
params (U)se sensor<br>
|
||||
(R)eg offset Reg (c)heck (T)
|
||||
self-check St(o)p sequence (H)eat ref<br>
|
||||
(G)PS
|
||||
(N)MEA
|
||||
D(I)rect GPS mode (E)xit<br>
|
||||
<br>
|
||||
D Direct GPS mode, with option the RS-41 can be used as a GPS
|
||||
mouse sending True NMEA bidirectional data via UART, you can
|
||||
also send "N" then just NMEA is output.<br>
|
||||
<br>
|
||||
Unfortunately, the settings are not retained after a power
|
||||
cycle.<br>
|
||||
<br>
|
||||
The (T)X Registers menu option allows reading and writing of
|
||||
arbitrary register values. <br>
|
||||
However, these changes are not persistent, and get overwritten
|
||||
on startup, and whenever the transmitter is disabled and
|
||||
re-enabled.<br>
|
||||
The (T)X register menu is used by entering:<br>
|
||||
Txx\r (where xx is the register value in hex)<br>
|
||||
You get a prompt as follows:<br>
|
||||
>T<br>
|
||||
Register number (00-7F) >77<br>
|
||||
Register value E3 ><br>
|
||||
At this point you can either send a \r to exit back to the
|
||||
main menu, or you can enter a value in hex + \r which will be
|
||||
written to that register.<br>
|
||||
Example RS41 onto the 70cm band (434.650 MHz) by programming
|
||||
the following values:<br>
|
||||
<br>
|
||||
0x75: 61<br>
|
||||
0x76: 10<br>
|
||||
0x77: D3<br>
|
||||
<br>
|
||||
A very handy online Calculator for more Frequencies is <a
|
||||
href="https://www.makemehack.com/2020/12/how-to-change-the-tx-frequency-of-the-vaisala-rs41-radiosonde.html"
|
||||
target="_blank">overhere</a>.<br>
|
||||
<br>
|
||||
P (parameters):<br>
|
||||
<br>
|
||||
Data ID is a hexadecimal number.<br>
|
||||
The value does not seem to have any meaning other than being
|
||||
used as a selector.<br>
|
||||
Values are strings or decimal numbers.<br>
|
||||
<br>
|
||||
ID card Value Changeable Note:
|
||||
<p style="margin-bottom: 0cm">10 5 *<br>
|
||||
20 14 *<br>
|
||||
30 0 *<br>
|
||||
40 0 *<br>
|
||||
45 S0341201 * Serial number<br>
|
||||
50 RS41-SG * RS41 model<br>
|
||||
60 20215 --- Firmware Version (V2.02.15)<br>
|
||||
70 9089 *<br>
|
||||
80 4 ---<br>
|
||||
90 5 ---<br>
|
||||
A0<br>
|
||||
B0<br>
|
||||
C0<br>
|
||||
D0 600 * Height [m] above the launch site that the RS41 must
|
||||
climb to before entering flight mode.<br>
|
||||
E0 18 * Low battery voltage threshold [100 mV] below which
|
||||
the probe will turn off (if the condition persists for some
|
||||
time). 18 = 1.8V<br>
|
||||
100180<br>
|
||||
110 60<br>
|
||||
120 1700<br>
|
||||
130 20<br>
|
||||
140135<br>
|
||||
150 50<br>
|
||||
160 1<br>
|
||||
170 RSM412 PCB type<br>
|
||||
180 R4550425 PCB serial<br>
|
||||
190 0000000000<br>
|
||||
1A0<br>
|
||||
1A8<br>
|
||||
1B0<br>
|
||||
1B8<br>
|
||||
1C0<br>
|
||||
1C8<br>
|
||||
1D0<br>
|
||||
1D5<br>
|
||||
1D8<br>
|
||||
1E0<br>
|
||||
200 29 --- Current battery voltage [100 mV]. 29 = 2.9 V.<br>
|
||||
210 0 ---<br>
|
||||
220 41 --- Current CPU temperature [° C]<br>
|
||||
230 48 --- Current radio temperature (Si4032) [° C]<br>
|
||||
240 1 ---<br>
|
||||
250 42 --- Current temperature reference range [° C]<br>
|
||||
255<br>
|
||||
260</p>
|
||||
<h2><a name="Firmware_"></a>Modified Firmware<br>
|
||||
</h2>
|
||||
<p style="margin-bottom: 0cm"><br>
|
||||
There are a few different firmware's each with their
|
||||
advantages.<br>
|
||||
</p>
|
||||
<br>
|
||||
1: 70cm Band, GPS and telemetry data in RTTY, APRS and CW on
|
||||
seperately defineable TX frequencies.<br>
|
||||
<a href="https://github.com/df8oe/RS41HUP" target="_blank">https://github.com/df8oe/RS41HUP</a><br>
|
||||
<br>
|
||||
<p style="margin-bottom: 0cm">2: 70cm Band, GPS and telemetry
|
||||
data in CW, RS41-FOX - RS41 Amateur Radio Direction Finding
|
||||
(Foxhunting) Beacon<br>
|
||||
This codebase turns a Vaisala RS41 into a 70cm 'radio fox',
|
||||
suitable for use in amateur radio direction finding
|
||||
contests. <br>
|
||||
<a href="https://github.com/darksidelemm/RS41FOX"
|
||||
target="_blank">https://github.com/darksidelemm/RS41FOX</a><br>
|
||||
</p>
|
||||
<p style="margin-bottom: 0cm">Features:</p>
|
||||
<p style="margin-bottom: 0cm"> Morse Ident containing callsign
|
||||
& current battery voltage.<br>
|
||||
Long CW beacon (user-defined length and number of repeats)<br>
|
||||
Low-Voltage Cutout, to avoid destroying rechargable
|
||||
batteries.<br>
|
||||
Beacon GPS position when battery is below a user-defined
|
||||
threshold.<br>
|
||||
<br>
|
||||
</p>
|
||||
<p style="margin-bottom: 0cm">3: 70cm Band, GPS and telemetry
|
||||
data in 4FSK and RTTY.<br>
|
||||
<a href="https://www.rowetel.com/?p=5906" target="_blank">Information
|
||||
on the 4FSK mode's performance.</a><br>
|
||||
</p>
|
||||
<p style="margin-bottom: 0cm">Recommend for short and long HAB
|
||||
floater flights.<br>
|
||||
</p>
|
||||
<a href="https://github.com/darksidelemm/RS41FOX"
|
||||
target="_blank"></a><br>
|
||||
<p style="margin-bottom: 0cm"> Features:</p>
|
||||
<p style="margin-bottom: 0cm">Powersave modes for Radio:<br>
|
||||
Then the transmitter will turn off between transmissions,
|
||||
saves about 50mA of power consumption.<br>
|
||||
</p>
|
||||
<p style="margin-bottom: 0cm">GPS in PowerSave Mode,
|
||||
Transmitting @ 13 dBm = ~120 mA, not Transmitting = 30-50mA,
|
||||
depending on GPS state.<br>
|
||||
</p>
|
||||
<p style="margin-bottom: 0cm">Deep Sleep Mode intended for
|
||||
long duration flights only!<br>
|
||||
Power consumption in sleep mode = 32mA @ 3V<br>
|
||||
<br>
|
||||
In this mode, the GPS is turned into a sleep mode in between
|
||||
transmissions.<br>
|
||||
During this sleep period, we sent one 'pip' every few
|
||||
seconds.<br>
|
||||
At the end of the sleep period, the GPS is powered back up,
|
||||
and we await the GPS to obtain a fix before transmitting our
|
||||
position. <br>
|
||||
While waiting for GPS lock, we send a 'double pip'.</p>
|
||||
<p style="margin-bottom: 0cm">Tracking sonde position from
|
||||
habhub.<br>
|
||||
<br>
|
||||
<a href="https://github.com/darksidelemm/RS41HUP"
|
||||
target="_blank">https://github.com/darksidelemm/RS41HUP</a></p>
|
||||
<p style="margin-bottom: 0cm"><br>
|
||||
</p>
|
||||
<p style="margin-bottom: 0cm">Settings and Config (edit in
|
||||
config.h) for this software must be written before flashing.<br>
|
||||
<br>
|
||||
</p>
|
||||
<p>Grab the latest GNU ARM Embedded toolchain from here: <a
|
||||
href="https://developer.arm.com/open-source/gnu-toolchain/gnu-rm/downloads"
|
||||
target="_blank">https://developer.arm.com/open-source/gnu-toolchain/gnu-rm/downloads</a><br>
|
||||
Extract the tarball to ~/opt/</p>
|
||||
<p>Within the RS41HUP directory:<br>
|
||||
Edit CMakeLists.txt and set the correct path to the un-tar'd
|
||||
directory.<br>
|
||||
cmake .<br>
|
||||
make<br>
|
||||
<br>
|
||||
</p>
|
||||
<img src="img/make.jpg" alt="" width="372" height="273"><br>
|
||||
<p><br>
|
||||
</p>
|
||||
<p><b>Note:</b><br>
|
||||
</p>
|
||||
<p>For your own flights, you will need to request a payload
|
||||
ID.</p>
|
||||
<p>Payload IDs can be requested by either raising an Issue, or
|
||||
a Pull Request on
|
||||
https://github.com/projecthorus/horusdemodlib/</p>
|
||||
Change the payload ID in config.h<br>
|
||||
#define BINARY_PAYLOAD_ID 0 // Payload ID for use in Binary
|
||||
packets <br>
|
||||
<br>
|
||||
Use the newly created bin or hex file to flash the RS-41.<br>
|
||||
<br>
|
||||
<a href="http://happysat.nl/HAB/HAB.html" target="_blank">Example
|
||||
Flights overhere</a><br>
|
||||
<br>
|
||||
<h2><a name="Program_and_Flashing_"></a>Program and
|
||||
Flashing
|
||||
<br>
|
||||
</h2>
|
||||
<br>
|
||||
<img src="img/ST-LINK2.jpg" alt="" width="501" height="375"><br>
|
||||
<br>
|
||||
Connect RS-41 and power on.<br>
|
||||
<br>
|
||||
Open ST-Link Utility:<br>
|
||||
<p style="margin-bottom: 0cm"><br>
|
||||
</p>
|
||||
<img src="img/ST-Link_util.jpg" alt="st link" width="410"
|
||||
height="300"><br>
|
||||
<br>
|
||||
<p style="margin-bottom: 0cm">Load bin or hex file.<br>
|
||||
<br>
|
||||
</p>
|
||||
<img src="img/ST-Link_util2.jpg" alt="" width="415"
|
||||
height="301">
|
||||
<p style="margin-bottom: 0cm"><br>
|
||||
</p>
|
||||
<p style="margin-bottom: 0cm">In target menu select Connect.<br>
|
||||
<br>
|
||||
</p>
|
||||
<img src="img/ST-Link_util3.jpg" alt="" width="357"
|
||||
height="143">
|
||||
<p style="margin-bottom: 0cm"><br>
|
||||
</p>
|
||||
<p style="margin-bottom: 0cm"> </p>
|
||||
<p style="margin-bottom: 0cm">This message can happen:</p>
|
||||
<p>Can not read memory!</p>
|
||||
<p>Read out protection is activated</p>
|
||||
<p>Disable Read Out Protection and retry.</p>
|
||||
<p>In the target menu/option bytes/ disable bytes read out
|
||||
protection.<br>
|
||||
<br>
|
||||
</p>
|
||||
<img src="img/ST-Link_util4.jpg" alt="" width="484"
|
||||
height="395"><br>
|
||||
<br>
|
||||
Target menu select Program and wait for flash to finish and
|
||||
disconnect.<br>
|
||||
Disconnect RS-41 and ST-LINK STM32.<br>
|
||||
<br>
|
||||
<h2><a name="Horus-Decoder_"></a>Horus-Decoder<br>
|
||||
</h2>
|
||||
<br>
|
||||
Telemetry demodulator for the following modems in use by
|
||||
Project Horus and <a
|
||||
href="https://github.com/darksidelemm/RS41HUP"
|
||||
target="_blank">RS-41 4FSK Modified Firmware</a><br>
|
||||
<br>
|
||||
Horus Binary Modes (4FSK)<br>
|
||||
v1 - Legacy 22 byte mode, Golay(23,12) FEC<br>
|
||||
v2 - 16/32-byte modes, LDPC FEC (Under development)<br>
|
||||
RTTY (7N1, 7N2 and 8N2, standard UKHAS sentences with CRC16
|
||||
only)<br>
|
||||
<br>
|
||||
<a href="https://rfhead.net/horus/horusgui/" target="_blank">Windows
|
||||
builds overhere</a><br>
|
||||
<a href="https://github.com/projecthorus/horusbinary"
|
||||
target="_parent">Linux decoder for the 4FSK mode is
|
||||
available overhere</a><br>
|
||||
<br>
|
||||
<img src="img/gqrx.jpg" alt="" width="662" height="425"><br>
|
||||
<br>
|
||||
Flash RS-41 with <a
|
||||
href="https://github.com/darksidelemm/RS41HUP"
|
||||
target="_blank">4FSK Modified Firmware</a><br>
|
||||
Tune in with any SDR Application (<a
|
||||
href="https://github.com/projecthorus/horusdemodlib"
|
||||
target="_parent">or the Horus rtl_fm scripts</a>) on the
|
||||
frequency specified in config.h in USB Mode.<br>
|
||||
<br>
|
||||
Start Horus-gui decoder:<br>
|
||||
<br>
|
||||
<img src="img/horus-gui.jpg" alt="" width="678" height="392"><br>
|
||||
<br>
|
||||
Select audio device (in this example YDP thru GQRX is used).<br>
|
||||
Mode RTTY of 4FSK, check mark for data feed to <a
|
||||
href="https://tracker.habhub.org/" target="_blank">habhub
|
||||
upload.</a><br>
|
||||
<br>
|
||||
Output is also possible with UDP thru <a
|
||||
href="https://github.com/projecthorus/chasemapper/"
|
||||
target="_blank">Chasemapper.</a><br>
|
||||
<p> </p>
|
||||
<h2><a name="OM3BC_Firmware_"></a>OM3BC Firmware<br>
|
||||
</h2>
|
||||
<br>
|
||||
70cm Band, GPS and telemetry data in RTTY, APRS and CW on
|
||||
seperately defineable TX frequencies,<br>
|
||||
configurable settings thru terminal serial connection from the
|
||||
radiosonde. <br>
|
||||
<a href="http://www.om3bc.com/docs/rs41/rtty.hex"
|
||||
target="_blank">Hex file for flashing from om3bc.com</a><br>
|
||||
Recommend for playing with the Radiosonde but not for real
|
||||
flight's GPS outage occur for shorts periods during flight.<br>
|
||||
APRS callsign bugs.<br>
|
||||
<br>
|
||||
<p style="margin-bottom: 0cm">Start (hyper)terminal like Putty
|
||||
and connect to serial COM Port and use 9600 Baud.</p>
|
||||
Power on RS-41, Welcome message should appear:<br>
|
||||
<br>
|
||||
<img src="img/welcome.jpg" alt="ter" width="367" height="229">
|
||||
<p style="orphans: 2; widows: 2"><span style="font-variant:
|
||||
normal"><font color="#000000"><font face="Liberation
|
||||
Serif, serif"><font style="font-size: 12pt" size="3"><span
|
||||
style="letter-spacing: normal"><span
|
||||
style="font-style: normal"><span
|
||||
style="font-weight: normal">$$$$$$ STM32 RTTY
|
||||
& APRS tracker by OM3BC ...<br>
|
||||
cmd></span></span></span></font></font></font></span><span
|
||||
style="font-variant: normal"><font color="#000000"><font
|
||||
face="Times New Roman"><font style="font-size: 14pt"
|
||||
size="4"><span style="letter-spacing: normal"><span
|
||||
style="font-style: normal"><span
|
||||
style="font-weight: normal"><br>
|
||||
<br>
|
||||
</span></span></span></font></font></font></span><span
|
||||
style="font-variant: normal"><font color="#000000"><font
|
||||
face="Liberation Serif, serif"><font style="font-size:
|
||||
12pt" size="3"><span style="letter-spacing: normal"><span
|
||||
style="font-style: normal"><span
|
||||
style="font-weight: normal">Allowed commands
|
||||
(not case sensitive):<br>
|
||||
<br>
|
||||
BUTTON ON / OFF - use button to turn off /
|
||||
this parameter specifies whether the push
|
||||
button can be used to turn off the radiosonde
|
||||
or not.<br>
|
||||
LEDs on / off - use LEDs / you can save energy
|
||||
when you do not use LEDs. After switching on,
|
||||
the LEDs always work, but when set to OFF,
|
||||
they automatically turn off after 10 minutes
|
||||
of operation.<br>
|
||||
POWER n - rf power n = 1 to 7 (7 is max.) /
|
||||
output power setting 0 = smallest, 7 = maximum
|
||||
power (approx. 40 mW).<br>
|
||||
APRSFRQ n - n = aprs frequency in kHz / APRS
|
||||
frequency (recommended frequency is 432,500
|
||||
MHz)<br>
|
||||
RTTYFRQ n - n = rtty frequency in kHz / RTTY
|
||||
frequency. This frequency is also valid for CW
|
||||
identification.<br>
|
||||
APRSCALL string - aprs callsign (up to 6
|
||||
characters)<br>
|
||||
RTTYCALL string - rtty callsign (up to 15
|
||||
characters)<br>
|
||||
CWIDMESS string - cw message (up to 25
|
||||
characters)<br>
|
||||
RTTY on / off - send rtty message<br>
|
||||
HOLDOFF n - n = time between two rtty messages
|
||||
in seconds<br>
|
||||
BAUD n - n = rtty baudrate<br>
|
||||
DBITS n - n = rtty databits (7 or 8)<br>
|
||||
SBITS n - n = rtty stop bits (1 or 2)<br>
|
||||
SHIFT n - n = 1,2,3,4 1 = 270, 2 = 540, 3 =
|
||||
810, 4 = 1080 Hz<br>
|
||||
TEMP on / off - send temperature in rtty
|
||||
messages / (The value is the temperature of
|
||||
the radio chip, not the environment.)<br>
|
||||
ALT on / off - send altitude in rtty &
|
||||
aprs messages<br>
|
||||
SPEED on / off - send speed in rtty messages<br>
|
||||
COURSE ON / OFF - send course in rtty messages<br>
|
||||
UBAT on / off - send battery voltage in rtty
|
||||
messages<br>
|
||||
USYS on / off - send system voltage in rtty
|
||||
messages / This is a constant value for
|
||||
testing only.<br>
|
||||
SAT on / off - the number of GPS satellites
|
||||
heard in rtty messages<br>
|
||||
APRS on / off - send aprs messages<br>
|
||||
SPEEDCOURSE on / off - send speed and course
|
||||
in aprs messages<br>
|
||||
SYMBOL string - symbol from aprs symbol table
|
||||
(2 characters) / two characters that determine
|
||||
how the radiosonde appears on the www.aprs.fi
|
||||
website. <br>
|
||||
SSID n - aprs ssid n = 1 to 15 / </span></span></span></font></font></font></span><span
|
||||
style="font-variant: normal"><font color="#000000"><font
|
||||
face="Liberation Serif, serif"><font style="font-size:
|
||||
12pt" size="3"><span style="letter-spacing: normal"><span
|
||||
style="font-style: normal"><span
|
||||
style="font-weight: normal">t</span></span></span></font></font></font></span><span
|
||||
style="font-variant: normal"><font color="#000000"><font
|
||||
face="Liberation Serif, serif"><font style="font-size:
|
||||
12pt" size="3"><span style="letter-spacing: normal"><span
|
||||
style="font-style: normal"><span
|
||||
style="font-weight: normal">he caller ID of
|
||||
the APRS. <br>
|
||||
TXD n - Tx delay n = 10 to 500<br>
|
||||
MICE on/off - send coded aprs messages in
|
||||
mic-e format<br>
|
||||
TELEMETRY on/off - send telemetry data in aprs
|
||||
messages<br>
|
||||
APRS_EVERY n - time between aprs messages is n
|
||||
x holdoff / APRS packages are not required to
|
||||
be given too often. This parameter specifies
|
||||
the time between the two packets.<br>
|
||||
TAIL_EVERY n - time between tail text is n x
|
||||
aprs time / frequency of transmission of the
|
||||
attached information text (comment field).<br>
|
||||
TTEXT string - tail text (up to 100
|
||||
characters) / attached information text
|
||||
(comment).<br>
|
||||
CWID on/off - send cwid messages<br>
|
||||
CWID_EVERY n - time between cw messages is n x
|
||||
holdoff<br>
|
||||
CW_SPEED n n = the CW identification speed in
|
||||
WPM.<br>
|
||||
IGATE on/off - monitoring aprs message via
|
||||
UART / after the parameter has been enabled,
|
||||
the radiosonde sends a text through the serial
|
||||
port that the iGate can link to.<br>
|
||||
NMEA on/off - send MNEA GPGGA and GPRMC
|
||||
messages via UART / If the parameter has been
|
||||
enabled, the radiosonde sends standard NMEA
|
||||
GPGGA and GPRMC text via the serial port.<br>
|
||||
DISP - shows the set parameters.<br>
|
||||
SERCOM n - speed of serial communication port
|
||||
(n = 300 to 115200)<br>
|
||||
DEF - set parameters to default values.<br>
|
||||
SAVE - save parameters to flash<br>
|
||||
<br>
|
||||
If you need help, you can use the HELP or the
|
||||
? command. </span></span></span></font></font></font></span><br>
|
||||
<br>
|
||||
</p>
|
||||
<img src="img/w7.jpg" alt="gqrx2" width="641" height="404"><br>
|
||||
<br>
|
||||
RS-41 Sending APRS Decode with Soundmodem.<br>
|
||||
<br>
|
||||
<img src="img/xub.jpg" alt="gqrx" width="643" height="405"><br>
|
||||
<br>
|
||||
RS-41 Sending RTTY Decode with FLdigi.<br>
|
||||
<br>
|
||||
<img src="img/ax25.jpg" alt="gps" width="642" height="386"><br>
|
||||
<br>
|
||||
APRS Position showing in APRSIS32.<br>
|
||||
<br>
|
||||
<img src="img/PE2BZ.jpg" alt="raam" width="640" height="437">
|
||||
<p style="orphans: 2; widows: 2">Connect it with Solar panels
|
||||
like PE2BZ did and launch it :)</p>
|
||||
<p> <br>
|
||||
</p>
|
||||
<p>Note:</p>
|
||||
<p><a href="https://airspy.com/download/" target="_blank">SDRSharp</a></p>
|
||||
<p><a href="http://gqrx.dk/" target="_blank">Gqrx</a></p>
|
||||
<p><a href="http://uz7.ho.ua/packetradio.htm" target="_blank">UZ7HO
|
||||
SoundModem</a></p>
|
||||
<p><a
|
||||
href="https://drive.google.com/open?id=160_7nVCYmewZSPXMG9on-2Gah_uHO5KP"
|
||||
target="_blank">FLdigi Appimage</a></p>
|
||||
<p><a
|
||||
href="https://sourceforge.net/projects/fldigi/files/fldigi/"
|
||||
target="_blank">FLdigi Windows</a></p>
|
||||
<p>ST-LINK STM32 / USB-TTL Converter can be found on Ali/Ebay.</p>
|
||||
</div>
|
||||
<div class="pagefooter"> This page was last edited on 19.01.2021
|
||||
| Vaisala RS-41 Modification by Happysat </div>
|
||||
</div>
|
||||
</div>
|
||||
<script src="https://code.jquery.com/jquery-1.12.0.min.js"></script>
|
||||
<script>window.jQuery || document.write('<script src="js/vendor/jquery-1.12.0.min.js"><\/script>')</script>
|
||||
<script src="script.js"></script>
|
||||
</body>
|
||||
</html>
|
||||
|
|
Ładowanie…
Reference in New Issue