- legacy wiki page - https://w.electrodragon.com/w/HP25_LED_Panel
hardware
Pin Definitions
Solar Panel Input = un-regulated higher DC input
- SO+
- SO-
Infrared Control
- V = VCC
- G = GND
- R = Infrared input
Battery In
- B+ = LED+
- B- = GND
Other Pins
- TXD/VCC/GND - debug only
- UPDI - flash chip
Power Supply
- SO+ via diode to B+/LED+
- B+/LED+ via LDO to system VCC
LED Drive
- On low side mosfet
Chip Pin Definitions
- ainyAVR-dat 0-series
Demo
-
https://www.electrodragon.com/w/Demo_Video
-
demo code - https://github.com/Edragon/Arduino-attiny