WR3 module is connected to the main PCB with a long cable that can be cut down and connected to an ESP8266. A Wemos or an ESP-M3 without the pins soldered is preferable. You will also need some double tape to mount it in place

Once the ESP8266 is installed and flashed with Tasmota, select TuyaMCU module and activate publishing TuyaReceived to MQTT:

Backlog module 54; SetOption66 1

SerialSend5 55aa0001000000
MCU Product ID: {"p":"imk0pcrtmyx9cbfg","v":"1.2.2","m":1}
{"TuyaReceived":{"Data":"55AA03070005010100010112","Cmnd":7,"CmndData":"0101000101","DpType1Id1":1,"1":{"DpId":1,"DpIdType":1,"DpIdData":"01"}}}
{"TuyaReceived":{"Data":"55AA030700050B050001001F","Cmnd":7,"CmndData":"0B05000100","DpType5Id11":"0x00","11":{"DpId":11,"DpIdType":5,"DpIdData":"00"}}}
{"TuyaReceived":{"Data":"55AA030700080E0200040000006489","Cmnd":7,"CmndData":"0E02000400000064","DpType2Id14":100,"14":{"DpId":14,"DpIdType":2,"DpIdData":"00000064"}}}
{"TuyaReceived":{"Data":"55AA03070005190100010029","Cmnd":7,"CmndData":"1901000100","DpType1Id25":0,"25":{"DpId":25,"DpIdType":1,"DpIdData":"00"}}}
{"TuyaReceived":{"Data":"55AA030700051A0400010431","Cmnd":7,"CmndData":"1A04000104","DpType4Id26":4,"26":{"DpId":26,"DpIdType":4,"DpIdData":"04"}}}
{"TuyaReceived":{"Data":"55AA030700051B040001002E","Cmnd":7,"CmndData":"1B04000100","DpType4Id27":0,"27":{"DpId":27,"DpIdType":4,"DpIdData":"00"}}}
{"TuyaReceived":{"Data":"55AA030700051C0400010635","Cmnd":7,"CmndData":"1C04000106","DpType4Id28":6,"28":{"DpId":28,"DpIdType":4,"DpIdData":"06"}}}
{"TuyaReceived":{"Data":"55AA030700051E0400010233","Cmnd":7,"CmndData":"1E04000102","DpType4Id30":2,"30":{"DpId":30,"DpIdType":4,"DpIdData":"02"}}}
{"TuyaReceived":{"Data":"55AA030700051F010001002F","Cmnd":7,"CmndData":"1F01000100","DpType1Id31":0,"31":{"DpId":31,"DpIdType":1,"DpIdData":"00"}}}
{"TuyaReceived":{"Data":"55AA03070008200200040000000037","Cmnd":7,"CmndData":"2002000400000000","DpType2Id32":0,"32":{"DpId":32,"DpIdType":2,"DpIdData":"00000000"}}}
{"TuyaReceived":{"Data":"55AA03070008210200040000000038","Cmnd":7,"CmndData":"2102000400000000","DpType2Id33":0,"33":{"DpId":33,"DpIdType":2,"DpIdData":"00000000"}}}

• DpType1Id1: Switch Sleep/Wakeup (useless)
• DpType5Id11: Fault Sensor
• DpType2Id14: Battery % in Hex
• DpType1Id25: Switch Pause/Resume
• DpType4Id26: Move Directions [0 “Front”, 1 “Back”, 2 “Right”, 3 “Left”, 4 “Stop”]
• DpType4Id27: Switch Vacuum State [0 “Standby” - 1 “Smart” - 2 “Spiral” - 3 “Single” - 4 “Wall Follow” - 5 “Go Charge”]
• DpType4Id28: Vacuum State Sensor
• DpType4Id30: Suction Power
• DpType1Id31: Switch Mute/Unmute
• DpType2Id32: Cleaned Area (useless)
• DpType2Id33: Cleaned Time

I’ve added the Vacuum to Home Assistant, the configuration can be downloaded here https://github.com/Sthopeless/trvc/blob/master/vacuum_black.yaml It is added to Home Assistant as a Package I am using the Lovelace Vacuum Card

The icon without background: