leansdr: Lightweight, portable software-defined radio.
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Raspberry Pi bareback LF/MF/HF/VHF WSPR transmitter.Makes a very simple WSPR beacon from your RasberryPi by connecting GPIO port to Antenna (and LPF), operates on LF, MF, HF and VHF bands from 0 to 250 MHz.
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ESP32 Fast Fourier Transform of Audio & WS2812B mapping
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ESP32-8266-Audio-Spectrum-Display
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Fast Fourier Transform for Arduino
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A spectrum analyzer VU meter running a 40kHz FFT on an ESP32
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This is a simple, inexpensive, transmitter and full-feature controller for conducting ARDF Foxoring competitions.
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Single Channel LoRaWAN Gateway: ESP32, RFM95 radio, arduino
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this is a extention up on the project of Robert Brown below the link https://sourceforge.net/projects/arduinomysqmskyqualitymeter
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Arduino compatible Sky Quality Meter using the TSL2591
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ESP8266 driven weather station with a Flask webserver frontend and Influx/Grafana plotting.
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(C) 2013 AG1LE Mauri Niininen. This software is a Morse decoder orinally created by Dr. E. L. Bell in 1977.
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This sketch implement s basic SSB radio control panel with the following features: Dual VFO A/B Rotary encoder for tuning, push button to change tuning increment SI5351 Clock generator for the LO and BFO CAT Control (emulates an ICOM IC-746)
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ICOM IC-746 CAT Control Emulation for Arduino
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