James - checking DIY-CNC stepper driver board pins?

James,

I'm getting close to the power-on and spin test for the three stepper
drivers and motors for the DIY-CNC. The motors and drivers are bolted
onto a piece of plywood at the moment. I did order new 10-pin
connectors, but only today, and they won't be in by Tuesday.

In the 10-pin connector, we'd noted:
     pins 1, 2, 8, 9, 10 are all GROUND
     pin 3 = STEP
     pin 4 = DIRECTION
     pin 5 = ENABLE
     pin 6 = J2-P3
     pin 7 = J1-P3

So how exactly should the ENABLE circuit be wired? Is it as shown
below? If a circuit with a normally-open switch and external +5 VDC
source is connected to pin 5 and grounded to pin 1/2/8/9/10 and the
switch is closed, then the ENABLE state is achieved?

                     _|_
     o--------------o o---------------|i|i|i--------------o
   pin 5 switch + 5V DC - pin 1/2/8/9/10

Is the pin 3 = STEP and pin 4 = DIRECTION implemented the same way?

Just checking. Carpenters say, "Measure twice cut once." Neophyte
electricians say, "Ask twice, before applying power."

Jim

Exciting news! I look forward to seeing the progress. How much more
testing needs to happen before we order another batch of boards? We're
going to need more for the mendel and other projects.

--Ed

Jim wrote:

James,

I'm getting close to the power-on and spin test for the three stepper
drivers and motors for the DIY-CNC. The motors and drivers are bolted
onto a piece of plywood at the moment. I did order new 10-pin
connectors, but only today, and they won't be in by Tuesday.

In the 10-pin connector, we'd noted:
     pins 1, 2, 8, 9, 10 are all GROUND
     pin 3 = STEP
     pin 4 = DIRECTION
     pin 5 = ENABLE
     pin 6 = J2-P3
     pin 7 = J1-P3

So how exactly should the ENABLE circuit be wired? Is it as shown
below? If a circuit with a normally-open switch and external +5 VDC
source is connected to pin 5 and grounded to pin 1/2/8/9/10 and the
switch is closed, then the ENABLE state is achieved?

                     _|_
     o--------------o o---------------|i|i|i--------------o
   pin 5 switch + 5V DC - pin 1/2/8/9/10

Is the pin 3 = STEP and pin 4 = DIRECTION implemented the same way?

Just checking. Carpenters say, "Measure twice cut once." Neophyte
electricians say, "Ask twice, before applying power."

Jim

Yup. Enable just needs +5V to work. Ideally, you only need to wire one ground pin; the rest are redundant. They'll be wired together on the breakout board, but for testing, you really only need one, since it's pretty low current to drive the step/direction.

-James