Thank you for the config! It works very well and precisely how I wanted.
A few notes that could help others. Pinout can be found here: Sinilink USB Switch Module (XY-WFUSB) Configuration for Tasmota
Connection holes on the USB controller are small, but if you have some UTP Cat5 cable laying around, it could do the trick.
Connection from the USB controller to a programmer:
- GNG → GND
- TX → RX
- RX → TX
- IO0 → GND
- RST (not connected)
- 3v3 → 3v3
Thanks!