{"NAME":"Miboxer-TRI-C1WR","GPIO":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2304,2272],"FLAG":0,"BASE":54,"CMND":"SO97 1 | TuyaMCU 11,20 | TuyaMCU 98,21 | TuyaMCU 21,22 | TuyaMCU 12,102 | TuyaMCU 22,103 | DimmerRange 10,1000"}

This device uses WB2S module which needs to be replaced with ESP-02S, WT-01N or WT32C3-01N. Besides the module, this process will require a heat gun, soldering tools and moderate soldering skill.

Identified with MCU Product ID: {"p":"ws3odtueeha5yjln","v":"1.0.1","m":0}.

Please read TuyaMCU article to understand the terminology and configuration process.

Hardware

The Miboxer TRI-C1WR Dimmer Module uses the UART to communicate with Tuya MCU. This Dimmer Module comes with a CB2S chip and requires replacement in order to be used with Tasmota.

The TuyaMCU on board requires the following settings.

Backlog TuyaMCU 11,20; TuyaMCU 98,21; TuyaMCU 21,22; TuyaMCU 12,102; TuyaMCU 22,103; TuyaMCU 13,104; DimmerRange 10,1000

Functions

dpID	Function	Datatype	Additional Comments
20	Dimmer Switch	Switch
21	Work Mode?	Enum	0 = Mode 1, 1 = Mode 2, 2 = Mode 3, Range 0 .. 4?
22	Dimmer Level	Integer	Value Range: 0 .. 1000
103	Min Brightness	Integer	Value Range: 0 .. 255
102	Breaker Mode	Switch
104	TRIAC Mode Leading Edge?	Switch
105	undocumented?	Enum	0 = Mode 1, 1 = Mode 2, 2 = Mode 3, Range 0 .. 4?

Serial Flashing

Please see the Hardware Preparation page for general instructions.

Flash using Tasmota Web installer and select ESP32-C3 option.

To put ESP32-C3 in flash mode EN needs to be pulled high and GPIO9 need to be pulled low. May take a 2-3 attempts, but just disconnect and reconnect 3V3 while keeping GPIO9 pulled low and click the retry button again until it works.

Any CP2102 or CH340 based USB to serial adapter is fine.

ESP32 Pin	USB Serial Pin	Comments
3V3	3V3	Connect to dedicated 3V3 1A power supply if encountering brown out
G	GND
IO9	Ground	Round contact pad on back of board, pull low BEFORE attaching 3V3
IO8	3V3	Could not find this pin, but it didn’t seem to be required
TX	RX
RX	TX
EN	3V3	Pull high to enable ESP32 (do not leave floating)