2019-12-21 03:45 AM
2019-12-21 08:29 AM
Yes, probably going to need an effective 5V supply
Perhaps review the specifications for the "thermal printer" and figure out what the requirements/expectations actually are.
Measure the voltages when functioning.
2019-12-21 10:16 PM
Dear clive1
I provided an external 5v supply to my STM32F407 discovery board, and turned the board on, but still, low speed...
