From b6d09dd2fd143cd8f88e473ae40ee55ccc339a54 Mon Sep 17 00:00:00 2001 From: happysat Date: Mon, 17 Jan 2022 21:02:37 +0100 Subject: [PATCH] Update README.md --- README.md | 768 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 768 insertions(+) diff --git a/README.md b/README.md index 1a1b9ba..4c07cb3 100644 --- a/README.md +++ b/README.md @@ -1,2 +1,770 @@ # Vaisala-RS-41-SGP-Modification. Vaisala RS-41 SGP Modification. + + + + + + + Vaisala RS-41 SGP Modification + + + + + + + + + + +
+

+
+

Vaisala RS-41 SGP + Modification.

+


+

+
rs41
+ Viasala RS-41
+
+

Radiosondes are + light weight sensor packages that are attached to weather + balloons.
+ They transmit live RF weather telemetry down to earth as + they rise.
+ One related hobby that a few people enjoy is radiosonde + chasing, which is tracking and collecting radiosondes once + they have fallen back to the earth.
+ Some people collect them as trophies, and others like to + repurpose them.

+

Another way to + repurpose radiosondes is to reprogram the commonly used + Vaisala RS-41 radiosondes into being able to transmit radio + APRS, 4FSK, RTTY or CW mode signals in the ISM or HAM bands. +
+ The initial modified firmware was first performed by SQ5RWU, + and then OM3BC who managed to create firmware able to + configure settings thru the serial connection off the + radiosonde.
+ Darkside did also modified firmware and added a very + promising demodulation mode 4FSK, which not only decrease + the package size but also has better coverage.
+ This firmware could be useful for anybody requiring a cheap + transmitter for their own high altitude balloon experiments.
+

+

Also it is + possible to enter the service menu of the Vaisala RS-41 + Radiosonde to learn more about its operation.
+

+
+
+
Contents
+ +
+

Hardware Details
+

+
+ The radiosonde RS41-SG was introduced by Vaisala in 2013.
+ On Vaisala's website it is possible to find + very detailed specifications of the RS41-SG.
+
+

LED Lights operation.

+

Red LED:
+ 1 - Temperature or humidity sensor broken.
+ 2 - Low battery.
+ 3 - Battery should be empty.
+ 4 - Expected interface, but there is none.
+
+ Flashing Green LED:
+

+

Insufficient data for GPS + positions.
+
+ After switching on the RS41, the LED will flashes four + times.

+

Flashing Green LED:
+ 1 - Turns red when something is wrong.
+ 2 - Enable transmitter.
+
+ When the Radiosonde is flying over 100 seconds,

+

1 - The LED goes out.
+ 2 - And the transmitter operates at full power.

+
+ RS-41 Details Thanks to Bazjo
+

Needed Stuff
+

+
      rs41  +
+     RS-41  SGP +                   +
+
+
+ USB-TTL converter.
+ Some wires and connectors.
+ Soldering tools.
+ ST-LINK STM32.
+  
+

RS-41 Connector
+

+
+
+
+

1 - GND

+

2 - Uart3 Rx

+

3 - Uart3 Tx

+

4 - PB1 * (10k + cap + 10k)

+

5 - Vcc (Boost out) 5.0V

+

6  VBAT 3.3V

+

7 - RST

+

8 - SWCLK

+

9 - SWDIO = SWID

+

10- GND

+
+

ST-Link STM32 + Connection
+

+


+ Download ST-LINK STM32 Software http://www.st.com/en/development-tools/stsw-link004.html
+

+


+

+ stm
+ Connect ST-LINK STM32:
+
+

RS41 ----- ST-LINK

+

===================

+

Pin 1 ----- GND

+

Pin 8 ----- SWCLK

+

Pin 9 ----- SWDIO = SWID
+
+

+


+
+

+
+
+

Orginal + Firmware and Service Menu

+


+

+ For a terminal connection the following data pins are + connected to the USB TTL Serial Converter in order to enter + the service menu:
+
+
+
+

Pin 1 ----- GND

+

Pin 2 ----- TxD

+

Pin 3 ----- RxD
+

+

Pin 4 ----- 3.3V
+ Or:
+

+ Pin 5 ----- 3.3V
+
+
+

Build together ->
+

+
+
+ Connect a terminal (9k6 8N1) to the XDATA UART port.
+

Select COM Port (most probaly Prolific driver is needed on Windows) + .

+

Start (hyper)terminal like Putty + and connect to serial COM Port and use 9600 Baud.

+
+

Power on RS-41, Welcome message should appear with + information about software version, serial number, etc:

+

Vaisala RS41 Radiosonde SW + V2.02.14                                         +
+ Copyright (c) Vaisala Oyj 2016. All rights + reserved.                           +
+ Serial number: P1234567 +                                                      +
+ Pressure module serial number: Px SW + V2.01                               +
+ Transmitter frequency: 403.90 + MHz                                             +
+ Transmitter power: + 3/7                                                       +
+ Enabled TX 
+

+
+ Now enter the following five characters and press Enter :
+

STwsv
+
+ Press ENTER again and you should see a service menu.
+ Where you can change the TX power, frequency and more + options.

+
+ (S)ensors         + Fre(q)uencies  (P)arameters    + (A)lfa           + TX p(o)wer
+ TX (f)requency    T(X) + state     (T)X registers  TX + contin(u)ous  TX ran(d)om
+ TX (c)arrier      (B)aud + rate    Ser(i)al no     + (R)ed LED info   (N)o menu
+ (K)eep test mode  S(W) version   + (M)easurements  (L)aunch/Drop    (E)xit
+ >Enabled TX
+  
+ A few examples:
+
+ X Transmission of the data is stopped.
+ o Change power level 0 - 7.
+ f  Change Frequency.
+ i  Change Serial Number
+ K Keep test mode, with this setting you do not have to re + enter the pw again in order to show the service menu.
+ M Measurements show the following menu:
+
+ (S)ensors     Fre(q)uencies  S(W) + reset       (D)efault + params  (U)se sensor
+ (R)eg offset  Reg (c)heck    (T) + self-check   St(o)p sequence   (H)eat ref
+ (G)PS         + (N)MEA         + D(I)rect GPS mode (E)xit
+  
+ 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.
+
+ Unfortunately, the settings are not retained after a power + cycle.
+
+ The (T)X Registers menu option allows reading and writing of + arbitrary register values.
+ However, these changes are not persistent, and get overwritten + on startup, and whenever the transmitter is disabled and + re-enabled.
+ The (T)X register menu is used by entering:
+ Txx\r   (where xx is the register value in hex)
+ You get a prompt as follows:
+  >T
+ Register number (00-7F) >77
+ Register value E3 >
+ 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.
+ Example RS41 onto the 70cm band (434.650 MHz) by programming + the following values:
+
+ 0x75: 61
+ 0x76: 10
+ 0x77: D3
+
+ A very handy online Calculator for more Frequencies is overhere.
+
+ P (parameters):
+
+ Data ID is a hexadecimal number.
+ The value does not seem to have any meaning other than being + used as a selector.
+ Values ​​are strings or decimal numbers.
+
+ ID card Value Changeable Note: +

10 5 *
+ 20 14 *
+ 30 0 *
+ 40 0 *
+ 45 S0341201 * Serial number
+ 50 RS41-SG * RS41 model
+ 60 20215 --- Firmware Version (V2.02.15)
+ 70 9089 *
+ 80 4 ---
+ 90 5 ---
+ A0
+ B0
+ C0
+ D0 600 * Height [m] above the launch site that the RS41 must + climb to before entering flight mode.
+ 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
+ 100180
+ 110 60
+ 120 1700
+ 130 20
+ 140135
+ 150 50
+ 160 1
+ 170 RSM412 PCB type
+ 180 R4550425 PCB serial
+ 190 0000000000
+ 1A0
+ 1A8
+ 1B0
+ 1B8
+ 1C0
+ 1C8
+ 1D0
+ 1D5
+ 1D8
+ 1E0
+ 200 29 --- Current battery voltage [100 mV]. 29 = 2.9 V.
+ 210 0 ---
+ 220 41 --- Current CPU temperature [° C]
+ 230 48 --- Current radio temperature (Si4032) [° C]
+ 240 1 ---
+ 250 42 --- Current temperature reference range [° C]
+ 255
+ 260

+

Modified Firmware
+

+


+ There are a few different firmware's each with their + advantages.
+

+
+ 1: 70cm Band, GPS and telemetry data in RTTY, APRS and CW on + seperately defineable TX frequencies.
+ https://github.com/df8oe/RS41HUP
+
+

2: 70cm Band, GPS and telemetry + data in CW, RS41-FOX - RS41 Amateur Radio Direction Finding + (Foxhunting) Beacon
+ This codebase turns a Vaisala RS41 into a 70cm 'radio fox', + suitable for use in amateur radio direction finding + contests.
+ https://github.com/darksidelemm/RS41FOX
+

+

Features:

+

Morse Ident containing callsign + & current battery voltage.
+ Long CW beacon (user-defined length and number of repeats)
+ Low-Voltage Cutout, to avoid destroying rechargable + batteries.
+ Beacon GPS position when battery is below a user-defined + threshold.
+
+

+

3: 70cm Band, GPS and telemetry + data in 4FSK and RTTY.
+ Information + on the 4FSK mode's performance.
+

+

Recommend for short and long HAB + floater flights.
+

+
+

Features:

+

Powersave modes for Radio:
+ Then the transmitter will turn off between transmissions, + saves about 50mA of power consumption.
+

+

GPS in PowerSave Mode, + Transmitting @ 13 dBm = ~120 mA, not Transmitting = 30-50mA, + depending on GPS state.
+

+

Deep Sleep Mode intended for + long duration flights only!
+ Power consumption in sleep mode = 32mA @ 3V
+
+ In this mode, the GPS is turned into a sleep mode in between + transmissions.
+ During this sleep period, we sent one 'pip' every few + seconds.
+ 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.
+ While waiting for GPS lock, we send a 'double pip'.

+

Tracking sonde position from + habhub.
+
+ https://github.com/darksidelemm/RS41HUP

+


+

+

Settings and Config (edit in + config.h) for this software must be written before flashing.
+
+

+

Grab the latest GNU ARM Embedded toolchain from here: https://developer.arm.com/open-source/gnu-toolchain/gnu-rm/downloads
+ Extract the tarball to ~/opt/

+

Within the RS41HUP directory:
+ Edit CMakeLists.txt and set the correct path to the un-tar'd + directory.
+ cmake .
+ make
+
+

+
+


+

+

Note:
+

+

For your own flights, you will need to request a payload + ID.

+

Payload IDs can be requested by either raising an Issue, or + a Pull Request on + https://github.com/projecthorus/horusdemodlib/

+ Change the payload ID in config.h
+ #define BINARY_PAYLOAD_ID 0 // Payload ID for use in Binary + packets
+
+ Use the newly created bin or hex file to flash the RS-41.
+
+ Example + Flights overhere
+
+

Program and + Flashing                                                       +
+

+
+
+
+ Connect RS-41 and power on.
+
+ Open ST-Link Utility:
+


+

+ st link
+
+

Load bin or hex file.
+
+

+ +


+

+

In target menu select Connect.
+
+

+ +


+

+

+

This message can happen:

+

Can not read memory!

+

Read out protection is activated

+

Disable Read Out Protection and retry.

+

In the target menu/option bytes/ disable bytes read out + protection.
+
+

+
+
+ Target menu select Program and wait for flash to finish and + disconnect.
+ Disconnect RS-41 and ST-LINK STM32.
+
+

Horus-Decoder
+

+
+ Telemetry demodulator for the following modems in use by + Project Horus and RS-41 4FSK Modified Firmware
+
+ Horus Binary Modes (4FSK)
+ v1 - Legacy 22 byte mode, Golay(23,12) FEC
+ v2 - 16/32-byte modes, LDPC FEC (Under development)
+ RTTY (7N1, 7N2 and 8N2, standard UKHAS sentences with CRC16 + only)
+
+ Windows + builds overhere
+ Linux decoder for the 4FSK mode is + available overhere
+
+
+
+ Flash RS-41 with 4FSK Modified Firmware
+ Tune in with any SDR Application (or the Horus rtl_fm scripts) on the + frequency specified in config.h in USB Mode.
+
+ Start Horus-gui decoder:
+
+
+
+ Select audio device (in this example YDP thru GQRX is used).
+ Mode RTTY of 4FSK, check mark for data feed to habhub + upload.
+
+ Output is also possible with UDP thru Chasemapper.
+

+

OM3BC Firmware
+

+
+ 70cm Band, GPS and telemetry data in RTTY, APRS and CW on + seperately defineable TX frequencies,
+ configurable settings thru terminal serial connection from the + radiosonde.
+ Hex file for flashing from om3bc.com
+ Recommend for playing with the Radiosonde but not for real + flight's GPS outage occur for shorts periods during flight.
+ APRS callsign bugs.
+
+

Start (hyper)terminal like Putty + and connect to serial COM Port and use 9600 Baud.

+ Power on RS-41, Welcome message should appear:
+
+ ter +

$$$$$$ STM32 RTTY + & APRS tracker by OM3BC ...
+ cmd>
+
+ Allowed commands + (not case sensitive):
+
+ 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.
+ 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.
+ POWER n - rf power n = 1 to 7 (7 is max.) / + output power setting 0 = smallest, 7 = maximum + power (approx. 40 mW).
+ APRSFRQ n - n = aprs frequency in kHz / APRS + frequency (recommended frequency is 432,500 + MHz)
+ RTTYFRQ n - n = rtty frequency in kHz / RTTY + frequency. This frequency is also valid for CW + identification.
+ APRSCALL string - aprs callsign (up to 6 + characters)
+ RTTYCALL string - rtty callsign (up to 15 + characters)
+ CWIDMESS string - cw message (up to 25 + characters)
+ RTTY on / off - send rtty message
+ HOLDOFF n - n = time between two rtty messages + in seconds
+ BAUD n - n = rtty baudrate
+ DBITS n - n = rtty databits (7 or 8)
+ SBITS n - n = rtty stop bits (1 or 2)
+ SHIFT n - n = 1,2,3,4 1 = 270, 2 = 540, 3 = + 810, 4 = 1080 Hz
+ TEMP on / off - send temperature in rtty + messages / (The value is the temperature of + the radio chip, not the environment.)
+ ALT on / off - send altitude in rtty & + aprs messages
+ SPEED on / off - send speed in rtty messages
+ COURSE ON / OFF - send course in rtty messages
+ UBAT on / off - send battery voltage in rtty + messages
+ USYS on / off - send system voltage in rtty + messages / This is a constant value for + testing only.
+ SAT on / off - the number of GPS satellites + heard in rtty messages
+ APRS on / off - send aprs messages
+ SPEEDCOURSE on / off - send speed and course + in aprs messages
+ SYMBOL string - symbol from aprs symbol table + (2 characters) / two characters that determine + how the radiosonde appears on the www.aprs.fi + website.
+ SSID n - aprs ssid n = 1 to 15 / the caller ID of + the APRS.
+ TXD n - Tx delay n = 10 to 500
+ MICE on/off - send coded aprs messages in + mic-e format
+ TELEMETRY on/off - send telemetry data in aprs + messages
+ 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.
+ TAIL_EVERY n - time between tail text is n x + aprs time / frequency of transmission of the + attached information text (comment field).
+ TTEXT string - tail text (up to 100 + characters) / attached information text + (comment).
+ CWID on/off - send cwid messages
+ CWID_EVERY n - time between cw messages is n x + holdoff
+ CW_SPEED n n = the CW identification speed in + WPM.
+ 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.
+ 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.
+ DISP - shows the set parameters.
+ SERCOM n - speed of serial communication port + (n = 300 to 115200)
+ DEF - set parameters to default values.
+ SAVE - save parameters to flash
+
+ If you need help, you can use the HELP or the + ? command.
+
+

+ gqrx2
+
+ RS-41 Sending APRS Decode with Soundmodem.
+
+ gqrx
+
+ RS-41 Sending RTTY Decode with FLdigi.
+
+ gps
+
+ APRS Position showing in APRSIS32.
+
+ raam +

Connect it with Solar panels + like PE2BZ did and launch it :)

+


+

+

Note:

+

SDRSharp

+

Gqrx

+

UZ7HO + SoundModem

+

FLdigi Appimage

+

FLdigi Windows

+

ST-LINK STM32 / USB-TTL Converter can be found on Ali/Ebay.

+
+
This page was last edited on 19.01.2021 + | Vaisala RS-41 Modification by Happysat
+
+
+ + + + +