In this video I build a simple SDR receiver using the ESP32-A1S and Arduino Audio Tools (https://github.com/pschatzmann/arduino-audio-tools) Here's the github repo containing all the code and schematics: https://github.com/thaaraak/ESP32-A1S-Tayloe Here's my previous videos on the Tayloe detector board https://www.youtube.com/watch?v=7t8avIT31Mo&t=146s Here's the kicad files for the boards https://github.com/thaaraak/Tayloe-Mixer-v2 Here's my previous video on the si5351 https://www.youtube.com/watch?v=2cb1LLoeT-Y Here's my fork for the si5351 and LiquidCrystal libraries https://github.com/thaaraak/Si5351Arduino https://github.com/thaaraak/LiquidCrystal_I2C 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... ... https://www.youtube.com/watch?v=prCrbD4T6I4

This is part two of the amplifier build I started in this video: https://www.youtube.com/watch?v=d4Vtk0D06S8 In this video I build up the power supply as well as the first stage of the amplifier. 0:00 Power Supply and Regulator schematic 1:14 A quick note on the SMD components 2:42 Power supply installed and tested 3:44 IRF530 Gate bias circuitry 4:11 Quick note on the SMD diodes 4:32 Bias circuitry installed and tested 6:10 First stage circuit 6:56 Overview of first stage on the board 8:01 A note on winding binocular cores 8:35 T1 Wound and installed 9:13 First stage ready to test 10:02 Waveform at base on oscilloscope 10:36 Waveform at collector on oscilloscope 11:27 Waveform after T1 on oscilloscope - and wrapup ... https://www.youtube.com/watch?v=DepM3m3cb1Y