How to bring in a unknown Tuya component with all functionality in tasmota interface and use in home assistant

Configuration
1

Good morning

I have a unknown Tuya integration for a boiler. The boiler uses the unflashable WBR3 chip and i will eventually replace it with a ESP-12F once i get this all working in Tasmota.

I have got all the commands needed via serial for this device. I have also decoded the HEX to get all the values but i just need to tie everything into together to get it reading values and then sending commands to the device with HEX commands.

First off, i piggy backed off the WBR3 with a D1 Mini and set tasmota to Tuyu MCU and immediately the ON and Off works for Heat / Non Heat of the boiler so thats one thing checked off.

My Goal for all of this?

To have tasmota read the temps x 2, have sliders for min and max set temp x 4 (30 -65 degree temp range) and then have another toggle working (ON/OFF).

I get the following in the console with TuyaSend0:

15:57:20 {
    "TuyaReceived":{"Data":"",
"Cmnd":7,"CmndData":"","DpType1Id1":1,"1":{"DpId":1,"DpIdType":1,"DpIdData":"01"},"DpType4Id2":1,"2":{"DpId":2,"DpIdType":4,"DpIdData":"01"},"DpType2Id10":56,"10":{"DpId":10,"DpIdType":2,"DpIdData":"00000038"},"DpType4Id13":1,"13":{"DpId":13,"DpIdType":4,"DpIdData":"01"},"DpType5Id20":"0x0000","20
15:57:20 TYA: fnId=11 is set for dpId=1
15:57:20 TYA: RX Relay-1 --> MCU State: On Current State:On
15:57:20 TYA: fnId=0 is set for dpId=2
15:57:20 TYA: fnId=0 is set for dpId=10
15:57:20 TYA: RX value 56 from dpId 10 
15:57:20 TYA: fnId=0 is set for dpId=13
15:57:20 TYA: fnId=0 is set for dpId=20
15:57:20 TYA: fnId=0 is set for dpId=101
15:57:20 TYA: fnId=0 is set for dpId=102
15:57:20 TYA: RX value 7 from dpId 102 
15:57:20 TYA: fnId=0 is set for dpId=103
15:57:20 TYA: RX value 60 from dpId 103 
15:57:20 TYA: fnId=0 is set for dpId=104
15:57:20 TYA: RX value 60 from dpId 104 
15:57:20 TYA: fnId=0 is set for dpId=105
15:57:20 TYA: RX value 60 from dpId 105 
15:57:20 TYA: fnId=0 is set for dpId=106
15:57:20 TYA: RX value 60 from dpId 106 
15:57:20 TYA: fnId=0 is set for dpId=107
15:57:20 TYA: RX value 5 from dpId 107 
15:57:20 TYA: fnId=0 is set for dpId=108
15:57:20 TYA: RX value 53 from dpId 108

But if i try send a command then nothing works. It does work however if i send the command with heartbeat via UART and spam send it.

2

I did something similar for my pellet stove

I mention this, because I ended up writing my own integration using an esplink (serial to wifi), and send/receive hex commands over tcp :wink:

Just one tip, convert hex to binary, so it’ll be easier to isolate specific bits for specific functions :yum:

3

Ok great. Thats what i want to get to. Do i need to create a new .ino file to do this stuff? is it difficult?
Ive never done this before.

4

The esplink is ‘plug and play’, it’ll allow you send serial over tcp (you could even use telnet to connect to it)

writing the integration was a bit harder :thinking: