[Glidergider]

Hey Greolt
I'm starting to assembly stuff to make the plate, and hook up the wires. My question to you is about wires and this statement,

The first one I made had a clip to go onto the tool. I found it worked faultlessly without it. So I ditched it.

In the end, did you only use one wire? You tried two wires, but since the router body was already grounded, you didn't need the second wire?

I'm trying to figure out the wiring. I know the plate's wire will go to pin 15 in my BOB. Do I need a second wire? Is the routers grounded body sufficient?

I see that you used a pull-up resistor. I'm thinking that means the plate is connected to your input pin and electrified to +5V. Am I correct?

Thanks for your previous response. It was helpful.

[Greolt]

........You tried two wires, but since the router body was already grounded, you didn't need the second wire?

That was what I found in my case. Others have done the same.

Do I need a second wire? Is the routers grounded body sufficient?

Some fancy spindles have ceramic bearings. Or there may be other reasons the tool is not well grounded. Try it and see.

I see that you used a pull-up resistor.

I'm not an expert.

But from my basic knowledge, you don't want an input to float. It needs to be held either high or low. Less suseptible to noise that way.

In this case I "pulled' it high and used the plate to ground it (or force it low) when contact is made.

Some break out boards have a jumper to select whether inputs are pulled high or low with on board resistors. PDMX-122

Others just have the inputs pulled low. CNC4PC- C10

Mine has neither.

I'm thinking that means the plate is connected to your input pin and electrified to +5V. Am I correct?

From memory I think I used a 3K resistor which at 5 volts is only about 1.5 miliamps.

I won't be in for a few days. Hope this is helpful. Greg