[phillby]

Ok Guys,

I am about to put power on the 3977. I hope the smoke dosn't escape. I have done all checks I believe possible.

Just so I get this right for testing.
1. I have put two Jumpers on the step mode to give full step.
2. I have put a jumper on the enable Input.
3. I have put a Jumper on the direction select. ie hardware reversal points.
4. I have connected up the diodes as shown above. Post 7, Thanks Randy.

I think all that is now needed is power and step signal.

Questions:
1: Will a nine volt battery provide sufficient current for the circuit and leds?
2: will I see a single step on the leds (i.e. manual ground on the step pin)?

Thanks in advance