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WiZ 4.9W 400lm RGBCCT Bulb (929002448402)
WiZ 4.9W 400lm

Available from:
Homedepot.com.mx
Amazon.ca






Install method:
USB to Serial

GPIO #Component
GPIO00 None
GPIO01 None
GPIO02 PWM 5
GPIO03 None
GPIO04 PWM 4
GPIO05 PWM 1
GPIO09 None
GPIO10 None
GPIO12 None
GPIO13 None
GPIO14 None
GPIO15 None
GPIO16 None
GPIO17 None
GPIO18 PWM 2
GPIO19 PWM 3
GPIO20 None
GPIO21 None
GPIO22 None
GPIO23 None
GPIO24 None
GPIO25 None
GPIO26 None
GPIO27 None
GPIO6 None
GPIO7 None
GPIO8 None
GPIO11 None
GPIO32 None
GPIO33 None
GPIO34 None
GPIO35 None
GPIO36 None
GPIO37 None
GPIO38 None
GPIO39 None
Configuration for ESP32
{"NAME":"WIZ GU10","GPIO":[0,0,420,0,419,416,0,0,0,0,0,0,0,0,417,418,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"FLAG":0,"BASE":1}
Flash only with ESP32-SOLO1 tasmota32solo1... binaries.

Disconnect from mains power.

Pry open de transparent plastic cover, its pretty easy its just glued with silicone. Remove two samll philips screws, and remove the silicone that is left on the preimeter.

Carefully pull the top board from the bulb, you can use a small screwdriver.

Turn the bulb arround looking directly at the bulb’s pins or connectors, you’ll see that they have a small hole in the center, try tu use a small strong wire or tool (like the pin/tool used to open the sim card compartments on the phones) and push right in the middle of the hole, try to do it little by little alternating between the two legs. That will help take the main board out of the bulb shell.

Then remove as best as you can the white putty/silicone from the board and youll see it’s some form of ESP32. Expose the back of the chip where you’ll find GND, VDD(3.3v), RX, TX, EN and GPIO0. Use soldering iron to carefully solder some pins to those terminals and use a USB to TTL adapter to flash Special version of Tasmota [tasmota32solo1.bin] (http://ota.tasmota.com/tasmota32/tasmota32solo1.bin)

Use: SetOption92 1 “Some CCT lights use PWM1 for brightness and PWM2 for color temperature (instead of PWM1 for Cold White and PWM2 for Warm White)”.