In this video I build up a simple electronic game based in part on the 1970s "Simon" game. I chose a Black Pill STM32F411CE based board but this could be equally done with the cheaper "Blue Pill" I was inspired in this by Big Clives teardown https://www.youtube.com/watch?v=3ss-1cu5gtA&t=733s and there is a fantastic reverse engineering of the game here: https://www.waitingforfriday.com/?p=586 All the code and schematic is here https://github.com/thaaraak/Black-Pill-Simon Finally the Timer calculator is here https://www.mikroe.com/timer-calculator 0:00 Intro 1:51 Game Demo 2:57 Schematic 5:57 A note on the STLink Programmer 6:43 Setting up the STMCube project 7:30 Setting up Timers/PWM 8:20 How to create the right Frequency using Prescaler/Period 9:58 The Timer Calculator program 11:42 Programming a tone 14:08 The LEDs 17:15 Setting up the Buttons 22:58 Using the Bounce2 debounce code 25:38 Code Explanation - State Machine 28:20 Code Explanation - Class Structure Bill of Materials - STM32411 Black Pill (or Blue Pill STM32F401) - LM386 - 4 x LEDs red, green, blue, yellow - 4 x Push button switch - 50k Pot - 4 x 2N3904 - 4 x 220 ohm - 4 x 3.3k ohm - 100 uF, 22uF, 220uF - 2 x .1 uF - 7805 5V Regulator ... https://www.youtube.com/watch?v=OxcPWusnIAg

In this video I pull together the USB interface. **** Note **** Going through the device setup I don't think my setup is correct. There should be a driver underneath the sound devices and there isn't. Also the device name should be "Multus SDR Controil" not "Magnis". I am not sure but it could be because the circuitry on the audio side of the PCM3060 isn't complete. More to come. Zadig https://zadig.akeo.ie/ Config Softrock https://pe0fko.nl/CFGSR/ 0:00 Intro 0:52 The USB section of the PCB 1:23 A close up of the PTR ESD protection diode 2:03 USB circuitry installed 2:32 Initial tests 3:08 Testing the USB connection on the laptop 4:23 Setup on windows 6:11 Using the Config Softrock software to change the LO frequency 7:25 LO waveforms on the oscilloscope 8:12 Zadig (I think the device is setup incorrectly here) 8:53 Wrap up ... https://www.youtube.com/watch?v=9sZSJ9BTql0

This is the build for the optional enclosure for the Phaser kit. A couple of notes: - I forgot to mention putting on the 2 nylon spacers underneath the board you can see them at the right of the board at around 8:05 - I just realized you can use the two spare ribbon wires to attach the on/off switch to the board ... https://www.youtube.com/watch?v=xfothUauACU

In this video I will be covering an SSB transmit mixer. This is an extension of the ESP32 Radio series Schematics here: https://github.com/thaaraak/ESP32-Radio-kicad Code here: https://github.com/thaaraak/ESP32-Transmitter DSP Processing video for ESP32 https://www.youtube.com/watch?v=oKbi1XitBvI&t=210s Phaser Radio series https://www.youtube.com/watch?v=e54clmYSznc Two Tone test by W2AEW https://www.youtube.com/watch?v=3DxBg6h4Fc8&t=190s Another two tone article https://www.vk6ysf.com/ssb_2tone_test.htm Discussion of IMD (that 700+1900 artifact) https://www.electronicdesign.com/technologies/communications/article/21798494/understanding-intermodulation-distortion-measurements An alternative phasing mixer https://kd4e.com/kd4e-images/projects/Phasing_SSB_Generator_.pdf 0:00 Intro 0:59 Component walkthrough 3:36 Schematic walkthrough 5:45 Hardware walkthrough 6:36 Tayloe Mixer board closeup 7:59 Single tone SSB on oscilloscope (USB) 9:35 Lower sideband 10:07 Lower sideband on Spectrum Analyzer 11:35 Upper sideband on Spectrum Analyzer 12:30 Two tone test setup 13:44 Two tone on Oscilloscope 15:05 Two tone on Spectrum Analyzer 17:20 Wrap up and next steps ... https://www.youtube.com/watch?v=XySzNe7rXbk