Simple SDR with Arduino Audio Tools

Опубликовано: 29 Апрель 2026
на канале: NA5Y

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In this video I build a simple SDR receiver using the ESP32-A1S and Arduino Audio Tools (https://github.com/pschatzmann/arduin...)

Update: I have changed the FIR library. Please clone this https://github.com/thaaraak/firduino into your Arduino/libraries directory. Video on the new FIR implementation is here
   • Simple SDR - Updated FIR implementation

Here's the github repo containing all the code and schematics:
https://github.com/thaaraak/ESP32-A1S...

Here's my previous videos on the Tayloe detector board
   • Pyboard Radio - Updated Tayloe Detector

Here's the kicad files for the boards
https://github.com/thaaraak/Tayloe-Mi...

Here's my previous video on the si5351
   • Programming si5351 with the PyBoard

Here's my fork for the si5351 and LiquidCrystal libraries
https://github.com/thaaraak/Si5351Ard...
https://github.com/thaaraak/LiquidCry...

Just download the Bounce2 and Encoder libraries using the Library Manager - I didn't modify those

0:00 Intro (sorry for all the banging...)
0:36 Block diagram walkthrough - Tayloe Detector
1:55 Block diagram walkthrough - ESP32 Processing
4:44 Using the si5351 with code example
6:53 si5351 in action
8:07 Audio Phase Shifting
10:32 Demo of what happens with too many taps
11:43 Schematic walkthrough of the Radio
14:36 Walkthrough of Radio components
15:48 Radio with injected RF at -70 dBm
17:15 Looking at the sideband suppression on the oscilloscope
18:55 Walkthrough of the Radio.ino code
24:30 Finally on the air...