Open source version of the STMicroelectronics STLINK Tools
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The LoRa APRS iGate will work with very cheep hardware which you can buy from amazon, ebay or aliexpress. Try it out and be part of the APRS network. TTGO LoRa32
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This version of Grbl runs on a STM32F411RE / STM32F446RE Nucleo Board
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A TX-only TNC (Terminal Node Controller) to generate the AFSK (Audio Frequency-Shift Keying) audio tones for APRS (Automatic Packet Reporting System) messages using a RP2040 microcontroller on a Raspberry Pi Pico board.
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WSPR beacon for Raspberry Pi Pico, based on pico-hf-oscillator library. It doesn't require any hardware - Pico board itself only.
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The Nucleo TNC is a breadboard implementation of the Mobilinkd TNC3 using a STM32L432KC Nucleo32 board. This TNC faithfully implements the audio section and EEPROM storage of the TNC3. It omits the battery charging and Bluetooth components of the TNC3.
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