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Step 10: Buttons part
There are 3PCS of the buttons on the PCB, usually you will find
3PCS 6*6 SMD version of the buttons in the KIT. If you have enough
soldering skills, you can solder those buttons directly or we
recommend that you use long flat nose pliers to band the button
legs straight, then you can plug the buttons inside the PCB holes,
and then solder the legs.
Step 11: Test the buttons, buzzer, and VFD panel
After finished all the steps shown up, we have almost finished
assembling the PCB. At this time, we recommend plug the USB power
