Search found 4 matches

by Mgilbride
Sat Feb 22, 2014 7:57 pm
Forum: Build Logs
Topic: will1384's Shapeoko 2
Replies: 77
Views: 52885

Re: will1384's Shapeoko 2

Hey Will, Couple of comments on your build (whis is looking sweet). I would not coil your USB cable and zip tie it to your power supply for two reasons. 1.) creating loops of wire period, especially near a power source can create an induction loop. 2.) you really want to keep your signal lines as fa...
by Mgilbride
Fri Jan 31, 2014 2:42 am
Forum: Build Logs
Topic: twforeman's build
Replies: 50
Views: 13468

Re: twforeman's build

The capacitor at the switches is my actual implementation. If you read this page ( http://www.cnccookbook.com/CCCNCNoise.html ) you will see several suggested implementations of capacitors for noise control. A small cap across limit switch contacts is one of the mentioned implementations. However, t...
by Mgilbride
Thu Jan 30, 2014 2:54 am
Forum: Build Logs
Topic: twforeman's build
Replies: 50
Views: 13468

Re: twforeman's build

I'm in the same boat. Working pretty well but two nagging issues. One being the limit switches which still trip every 30 minutes or so. Really wished these were set up as normally closed switches. Starting to sound like that may be a best practice for these type of low voltage switches. I think that...
by Mgilbride
Tue Jan 28, 2014 4:53 am
Forum: Build Logs
Topic: twforeman's build
Replies: 50
Views: 13468

Re: twforeman's build

Also enjoy following your build. Two questions re: your limit switches. 1.) are you using resistors / capacitors to filter out noise? If so do you mind sharing a rough schematic? 2.) when you say you left the motor grounds floating while you grounded the shield of the signal line (from your blog lin...