This schematic shows how to test PIC16F886 microcontrollers after downloading the .HEX file from MPLAB IDE.
It is a common problem with these motor boards, that the hand controller displays "No response both axles". This is usually caused if the serial communication fails on the microcontrollers.
The board has 2pcs. PIC16F886 microcontollers, one for each axle. There axle stepper motors are bipol...