Finally received new HDBB2. Connected and all looks good - I can drive all axis finally :) Only one issue - don't know why, UC300, when connected to external power source of 5V (jumper settings correct) my pc does not see the board connected... Once I disconnect external power source, reposition jumper to use 5V from USB - PC can see the board and all works just fine ? Any ideas why is that and is it ok to use it without external power source ?
Also, I'm bit confused how to drive relays from two different sources. I want to use outputs from HDBB2 and UC300 to activate relays. Here is a diagram how I connected it at the moment:
But, the relays is not working that way... (I can activate them via Arduino with that wiring though). I could use this type of connected (external power supply connected to power relay coil, but from where I shall take 5v to activate relay ?)
Could anyone help / guide me how I shall wire the relay board ?
Last edited by TadasM; 21-10-2016 at 07:49 AM.
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