DIY CNC Milling Machine From Scratch

[totts]

It's a 70v psu I can't remember the exact voltage from the psu,

The akz250 is a Chinese board . I m pretty sure I can wire a different supply to it by using this diagram -





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[A_Camera]

It's a 70v psu I can't remember the exact voltage from the psu,

The akz250 is a Chinese board . I m pretty sure I can wire a different supply to it by using this diagram -





Sent from my iPhone using Tapatalk

That diagram shows only how to connect an external PSU for the drivers, not the BoB. Anyway, if there is no external +5VDC input to the BoB you can always split the USB cable, separate it from your PC and feed it through those two wires. It is not a good idea to take the 5V from the USB because that is not always able to deliver enough power, or the voltage is too low for your opto couplers. Generally an external power supply is preferred because it is better and more stable.