πŸ”΄ MoonTune Γ— photonnano.dev β€” Optical Record Converter

Converts Clips, Full Songs, or Albums into Ready-to-Burn RP2040-Zero (.UF2) & Optical (.UART) Files
Ready. For your AYWHP RP2040-Zero (USB-C), click "Download RP2040-Zero .UF2" and drag the .uf2 file straight onto the RPI-RP2 USB drive!
πŸ”₯ How to Burn & Wire Your AYWHP RP2040-Zero (No SD Adapter Neededβ€”Just a USB-C Cable!):
1. Burn the Chip: Hold down the tiny BOOT button on the RP2040-Zero while plugging it into the computer with a normal USB-C cable. It pops up as a USB drive named RPI-RP2. Drag your downloaded .uf2 file onto RPI-RP2β€”it burns and reboots automatically!
2. Solder the 660 nm Red LED to RP2040-Zero:
β€’ If using Pre-Wired LEDs (e.g. PATIKIL 5mm 3V Pre-Wired):
  • RED Wire (Positive / Anode +): Solder directly to Pin 0 (GP0).
  • BLACK Wire (Negative / Cathode -): Solder directly to Pin GND.
β€’ If using Raw Bare LEDs (Unwired with metal pins):
  • Longer Leg (Anode +): Solder to Pin 0 (or 1 / 2 / 3) through a 100–220 Ξ© resistor.
  • Shorter Leg / Flat rim (Cathode -): Solder to Pin GND.
3. Solder Battery (After USB Flashing): Connect Battery + to Pin 5V (through a switch) and Battery - to GND.

πŸ”Œ BPW34 Photodiode (or 2nd Red LED) β†’ Switian 1/8" (3.5mm) Screw Terminal Block:
β€’ Cathode (short leg / metal tab side): Screw into L (Tip / Mic Signal).
β€’ Anode (long leg): Screw into GND (Sleeve / Ground).