This is a demodulator multimode AM SSB CW for quadrature input signal (es. taken from ElkSDR-UNO receiver or QRPLab Receiver o similar). The idea is to make a self contained with few controls "sistem on chip" demodulator. Using the ElkDSR-UNO and this project you will obtain a full working SDR receiver. The demodulator includes filtering, noise reduction and this new version 2.0.0 includes also a Panadapter with OLED display.
The project is work in progress. vy 73 de Giuseppe, IK8YFW (@) libero.it
Video :
https://youtube.com/shorts/FqbgBwjhAKQ
https://www.youtube.com/watch?v=xDynoE3Cdgc
https://www.youtube.com/watch?v=v5nKXXgiXFs
Video Panadapter:
https://www.youtube.com/watch?v=XJZHlI171lk
https://www.youtube.com/watch?v=LfmM74ldySU
Pico Pi demodulator (SSB CW AM ) and ElkSDR UNO Receiver as stand alone SDR Receiver.
HISTORY (recent upper):
[05.10.2024] - Create tag for versione 1.0.0 and Open a new versione 2.0.0 First Commit of new version with Panadapter. Updated sources, main demodulator schematics and Video demostrations.
[02.05.2024] - Added the IowaHills program used to calculate the Hilbert Filters.
[13.08.2023] - Added new schematic. Apply a good I/Q audio level from an SDR receiver. For the ElkSDR-UNO you can increase the input audio level in using a small pre amplifier.
NOTE: The project was build with Arduino IDE v. 1.8.19 and v. 2.x.x with the earlephilhower/arduino-pico plugin (compiled with the v. 4.0.x) you need also some additional libraries: https://www.arduino.cc/reference/en/libraries/arduinofft/ (compiled with thw v. 2.0) https://github.com/olikraus/U8g2_Arduino (compiled with the v. 2.35.30)
Credits: Thank you to JR3XNW for the code related the band scope waterfall.