Newer Costco Feit wifi dimmer switch

stevemann · February 7, 2023, 4:05pm

3.3v from the UART dongle may not be stable enough for flashing.
If the dongle is switchable (5V or 3V3), is it switching the Tx and Rx levels or just the Vcc?

tryingbe · February 21, 2023, 2:08am

Used an arduino to supply 3.3v and the beken chip flashed!

michaelk · March 19, 2023, 7:36am

I’ve put together a guide that is specific to this FEIT Electric Smart WiFi Dimmer switch (where as the prior solution is for all Beken chips):

gist.github.com

https://gist.github.com/michaelkamprath/706d97b4948a16ec9118d34179f70860

feit-electric-dimmer-openbk7231t-conversion.md

# Converting FEIT Electric Smart Wifi Dimmer to OpenBK7231T
The following steps shuld be taken to convert the [FEIT Electic Smart WiFi Dimmer switch](https://amzn.to/3ZLwa53) to be cloud-free using the OpenBK7231T software.

**WARNING** - Modifying electrical equipment that operates at mains power can be dangerous, even deadly, if you you make a mistake. Seek professional help with this conversion if you have any doubts (or should have doubts) in your ability to do it.

## Reflashing Switch with OpenBK7231T Software
Note that this process requires you to have a UART capable of operating at 3.3 volts, some wires to connect the UART to the switch's circuit board, and a computer the UART can conncet to that has Python 3 installed.

Disassemble the switch, removing the circuit board form the switch unit. Be sure not to lose any of the screws or the platstic PCB cover you had to remove. Then, attach 4 wires tyoe the `RX1`, `TX1`, `3V3`, and `GND` points on the circuit board. Also, connected a jumper from the `NRST` pad to `GND`. Then connect the wires to a UART capable of operating at 3V3 voltage as follows:
* `RX1` --> UART `TX`

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the_reza · April 14, 2023, 11:30pm

Thanks. Great write up. I missed the part about connecting NRST to GND and that killed an hour, but otherwise, it worked well.

Based on what I read, the circle indicator on the switch can be disabled using the OEM app. Know how to do it using HA/OpenBK?