Touchplate, input pin static updates

I made such an innocent change and it turned out to be the silent killer of several input pins!!!

The LR3 had the touchplate and clamp stored together on the stepper.

The LR4 had the touchplate and clamp stored separately.

Well, turns out that was a huge mistake. When you reach in with your fully charged static hands and tend to grab the touchplate first. Without them stored touching each other that static has nowhere to go except into the input protection diodes.

Sorry, if you popped an input send them in I can swap out the little diode, or send you one if you are handy with a soldering iron / hot air.

The fix -


The new top mount has them stored touching. Get the new file here, Makita 701 / AutoSpin T1 Tool Mount and Dust Shoe for the LowRider 4 CNC by V1 Engineering | Download free STL model | Printables.com.

If you do not want to print a new one, no worries.


This works just the same.

The belt and suspenders -

The new Jackpot3 V1 has some added ESD protection on all 7 input pins. The next batch should have this.

Good habit -

Best practice here would be two to touch a ground first. You can leave a little part of the vac hose ground wire exposed in the dust shoe and touch it first. Then reach in and grab your probe set.

Moving forward -
I added some static notes to the jackpot 3 Docs page.

9 Likes

If you bought a printed parts kit from me and want the updated top mount, I will include one free with your next order.

If you killed a pin, I can fix it if you want to send it in. Or I will send out a free diode with your next order. It is very small though so if you are not pretty handy with an iron, best not to attempt it yourself.

2 Likes

Ughhh, I kinda miss the angular lr3 core look.

3 Likes

True, but then again the LR4 core is a much better “hand prop” in my opinion to hand someone at a show.

1 Like

What? I just tuck them between the top of the router and the core. :laughing:

1 Like

Soooo, should I take this as advice that also applies to MPCNC primo? My plate and probe are usually just pushed aside outside of the cutting area. If they are touching it is accidental.

1 Like

Will there also be one for the Kobalt?

1 Like

Ok I just noticed the tiny cylindrical magnet. When I received my partially assembled LR4 from Jonathan I was unpacking it and I heard something small fall on the floor but had no idea what it was and couldn’t find it. A couple days later I found a little magnet and I had no idea where it came from. What’s the purpose of it?

1 Like

The magnet lets the clip stick to the metal collet without having to clamp the bit.

2 Likes

A good portion of us have lost that magnet long ago lol. I was hoping the way I was sending them it would still be in place. Maybe I should be taking that off and putting it in a bag or something.

Wanna give this one a shot? I will do a test print tomorrow. Should be fine though.
Tool Mount T V1 _ Kobalt.zip (136.2 KB)

2 Likes

Thank you.

1 Like

I superglued the magnet inside the clip.

5 Likes