To Wire the Cherry MX keys is very simple. Wire one leg of each key to ground and then run a wire from the other leg of each key to the following pins. You might want to solder the switches before you pop them into the case. They can be held with a drop of glue but will fit snugly without as well.

That's it. Once you flash the esp32 and power up press key 1 within the first 3 second of booting and you will enter a self test and config mode. In the self test mode you can push each key one by one and it will verify your soldering and operation of the keys. Once all 5 keys have been pushed the system will proceed to the config web menu.

Configuration is very simple. On powering up the sidecar press key 1 (the key closest to the TFT) within 3 seconds. As it's printing all the dots ...

You will then enter the self test menu. Press each key in turn until you see "test pass" If you do not see a test passed check your wiring. Once the test is passed the system will enter a mode where you edit the config

At this point you will need to add some TOTP salts. These can be found when your one time password is initially generated on the service you want to authenticate . It will usually represent as a QR code. When you see the QR code there is usually an option display your code manually. Find that option which will typically display a group of base32 letters. It might look something like this WWKAAJJWJJAASZ====.

The sidecar can store up to five TOTP salts (one for each key) so make sure you have them all in advance ready to configure your sidecar. Once your ready and the self test has passed you will be able to connect to the sidecar over wifi. Use your smart phone or computer to scan for the SSID "Key-Sidecar" and connect. Once connected open your favorite browser and connect to http://192.168.4.1 and you should see the config menu