GrundigRGBESP8266

Grundig RGB lamp with ESP8266
Participants	User:buzz
Skills	Electronics, Programming
Status	Done
Niche	Electronics
Purpose	Infrastructure
Tool	No
Location
Cost
Tool category

Grundig RGB lamp with ESP8266

Esp8266-breadboarded.jpg {{#if:No | [[Tool Owner::{{{ProjectParticipants}}} | }} {{#if:No | [[Tool Cost:: | }}

the plan

• Disable the shitty mcu inside the lamp (done)
• Solder wires to the vcc, gnd and pwm pins (nearly done)
• Connect a ESP8266 to it with nodemcu and some lua sauce
• ????
• Profit!

build log

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Right, whatever. I pulled all electronics out, soldered a Wemos D1 mini inside and 10x SK6812RGBW leds and i used my existing art-net code. Done :D

--buZz (talk) 21:34, 1 October 2016 (CEST)

Inspired by madeddie's ESP mission, i dug up this old project and attempted to finish it.

Had it working on breadboard so moved to put it inside the actual lamp. Doing so I seem to have broken ~something. Currently debugging.

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--buZz (talk) 19:20, 14 November 2015 (CET)

control mcu pinout

This is the unmarked IC labelled U1 on the silkscreen. , vcc is 4.24-4.3 volts

               -------------
              |   o         |
 vcc      ----| 1         5 |----  gnd
 red pwm  ----| 2         6 |----  blue pwm
 ?        ----| 3         7 |----  green pwm
 ir rx    ----| 4         8 |----  ?
               -------------

Funny bit is, the PWM signal is actually inverse. So they output a high signal to turn off the LED, and a low signal to turn on the LED. This can be proven by grounding one of the pwm output pins, which turns on the respective color of LED.

consideration

• Make wifi foolproof, webpage style config and 'robust'
• Do fancy fades inside the ESP8266 ?
• Lower voltage a bit (about 0.7V?) to power the ESP8266
• Pray the pwm output has enough umpf

links

• https://www.conrad.nl/nl/grundig-rgb-mood-light-grundig-rgb-led-verlichting-mood-light-meerkleurig-1000346.html