What chips power the Deta Grid Connect 6911HA?
The switch uses a Tuya WB3S module with a BK7231T Wi-Fi SoC and a Holtek BS813A touch controller [Elektroda, wolfieeewolf, post #20464146][Elektroda, p.kaczmarek2, post #20475670]
Deta Grid Connect Smart Single Gang Touch Light Switch - 6911HA - Teardown
TL;DR
- The Deta Grid Connect Smart Single Gang Touch Light Switch 6911HA uses a WB3S module with a BK7231T chip.
- The main chip was manually flashed with the BK7231 GUI Flash Tool, and the module pins were mapped for relay, Wi‑Fi LED, and button control.
- It was purchased at Bunnings Warehouse for $56.63AUD.
Device Name: Deta Grid Connect Smart Single Gang Touch Light Switch - 6911HA
Device Type: Light switch
Device Chip: WB3S - BK7231T
Device Purchased: Bunnings Warehouse - $56.63AUD
Flashing of Main Chip
Manually flashed the chip with BK7231 GUI Flash Tool.
WB3S Module Datasheet
Configuration of Module
Pins
P6 - Relay - Channel 1
P9 - WifiLED_n - If you want the White LED on when Wifi is connected
or WifiLED for White LED on when Wifi is disconnected
P14 - Button - Channel 1
Device Type: Light switch
Device Chip: WB3S - BK7231T
Device Purchased: Bunnings Warehouse - $56.63AUD
Flashing of Main Chip
Manually flashed the chip with BK7231 GUI Flash Tool.
WB3S Module Datasheet
Configuration of Module
Pins
P6 - Relay - Channel 1
P9 - WifiLED_n - If you want the White LED on when Wifi is connected
or WifiLED for White LED on when Wifi is disconnected
P14 - Button - Channel 1
wolfieeewolf wrote 92 posts with
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Comments
Very nice and simple device. Does it have also a LED linked to relay? It should be possible to disconnect that LED and use a free GPIO of WB3S to control that, if required. I can also see a BS813A IC,... [Read more]
Yeah, the button has a blue led light on the board. You can see it (LED 2) just in the middle of the TPM button. It turns on when the relay is powered so maybe there could be a way to disconnect it from... [Read more]
Nice, btw, consider adding "PowerSave 1" to startup and report to me if it works well. This will reduce heating, electricity consumption and even might prolong life of cheap power supply inside the switch. Regarding... [Read more]
Will give it a go and report back when I can. No rush on the other device. Kinda having a break from it as it was annoying me I couldn't work it out. [Read more]
I would do that other device for you very quickly, the only problem is that it is hard to do fully remotely when I don't have it in front of me. I will give it another try soon. I could also get the same... [Read more]
I have just flashed a number of these around my house. The WiFi LED behaviour I like is that the LED is on if the WiFi is working. Ergo, it needs WiFiLED_n for that to be the case. I note that other... [Read more]
Guess it depends on what you like. I have it so that the light comes on when the WiFi is not connected. Makes it easy to see what switches have failed. I'm not a huge fan of the bright white LED does... [Read more]
Maybe I've just had these running Tuya for too long and I'm used to the default LED behaviour. [Read more]
I had a spare one of these laying around so decided to dump to stockfirmware should anyone want it. Would be interesting to see if you could turn off the blue ring leds. Heres the JSON... [Read more]