USB to Serial
UPDATE for Tuya-Convert in 2022 and modern Tuya Firmwares
You can request an update to the 1.0.6 firmware version from the Gosund support (email@example.com), simply add them to the Tuya app first, go into the device details and copy the Device ID from there. Include that ID in the mail and request the update for it, you can also add multiple devices at once of course. The default 1.0.4 firmware still won’t let you use Tuya-Convert. Once the new update is available for the EP2 you’ll be prompted in the Tuya app to upgrade, do so and once installed you can use Tuya-Convert just like usual again!
The Gosund EP2 is not easily opened as it contains no screws.
The best way of opening it is to work your way around the clear plastic insert with a pair of pliers gently until the glue finally gives up. Adding a little force with an rubber mallet or an pipe wrench on the shell could also help.
This layout is for PCB marked as “P002_Wifi_V1.0”