Components:
- 2x 2x5mm screws
- 1x 2.5x20mm screw
- 1x 12x12x3mm button with cap
- ESP-01s + WLED firmware
- Charger (TC4056A) + DC-DC boost controller
- Custom board with soldered AMS1117-3.3v (ESP power and connections board. I cut from prototype board)
- 3x15cm LED strip (WS2812b)
- 1x 21700 or 18650 battery
- Soldering iron + straight hands ^_^
WLED tuning:
Add presets ("API Command"):
- "T=2" - Power switch
- "P1=1&P2=31&PL=~-" - Previous preset
- "P1=1&P2=31&PL=~" - Next preset
Note: P1 - First preset, P2 - last (Count of presets).
Go to Config - Time&Macros - Button actions
And set this 3 presets to any button actions you like.
In "segments" - add 3 segments, 9 leds per segment. "Reverse direction" for 2nd segment (Or 1 and 3) for better animations.
WARNING:
- On full bright - LEDs can generate too much heat, possible to deform holder. Use ABS plastic or reduce brightness.
- DC-DC converter based on TP4056A chip. This chip does not have uder-voltage protection, so possible to damage battery (voltage drop upto 2.7v - then ESP may glitch and/or you can see some light glitches)
TODO: Replace DC-DC to more reliable and functional module.
Demo
Category: Electronics
Fox Allester
