You can find this device anywhere , but it came with a proprietary firmware .
If you open the case , and after connecting to your computer via a USB to TTL UART adapter , you can flash the firmware with Tasmota . More information on Tasmota Device page .
Now the tricky part happend when the device is already flashed , and if for some reasons you want to reflash via OTA , the device does not have enough space , to flash a full new firmware .
So you need to proceed in 2 steps :
- Flash with a minimal firmware ( http://ota.tasmota.com/tasmota/release/tasmota-minimal.bin.gz ) , reboot
- Flash with the final firmware .
For the final firmware you can flash with the regular firmware http://ota.tasmota.com/tasmota/release/tasmota.bin.gz , or with one custom firmware i provide .
I built a custom firmware that include the right Tasmota template .
- Tasmota version v15.4.0 tasmota_v15.4.0.bin.gz
NOW If you don't have a USB to TTL UART adapter , i sell on Ebay this device , with Tasmota pre-installed .
Please take a look at here .
- 1 device with Tasmota v15.4.0 for 18$
- a kit of 2 devices with Tasmota v15.4.0 and free shipping for 42$ with free shipping