Try to flash a firmware for checking
Assuming you are using PICO 1
- download the uf2
- press BOOTSEL on Pico and plug the Micro-usb cable into Pico too
- copy the uf2 into PICO,on windows there will be a new disk ,on linux there will be like /media/$USER/RPI-XXX
- once copying done, pico will reset automaticly, unplug the Micro-USB cable
- Plug USB type C cable into PicoCalc TYPE C port
- Press Power ON
Normally picocalc will boot up and you will see PicoMite prompt interface
if Not , double check the assembling carefully
If still nothing happend
it’s time to send email to help@clockworkpi.com