Search found 135 matches

by potatotron
Fri Jul 04, 2014 8:51 pm
Forum: tinyG
Topic: Not accepting switch type setting ($ST)
Replies: 2
Views: 530

Re: Not accepting switch type setting ($ST)

Hi,

I just encountered the same problem. Is there a resolution?

Thanks,

Chris
by potatotron
Wed Jan 15, 2014 5:07 pm
Forum: Assembly
Topic: 24V powersupply vs. 12V
Replies: 2
Views: 596

Re: 24V powersupply vs. 12V

Taken from http://www.schmalzhaus.com/EasyDriver/#Q14
Lower voltages produce a lot less heat (on the ED and the motor) but produce lower maximum speed and torque. Higher voltages (up to 30V) get you more torque at higher speeds, but your ED will get much hotter. You make the decision.
by potatotron
Thu Dec 12, 2013 11:54 pm
Forum: GRBL
Topic: Resistor and capacitor for limit switches
Replies: 8
Views: 2363

Re: Resistor and capacitor for limit switches

How do you count the current that passes from the resistors? Ohm's Law -- I = V/R … Amps = Volts / Resistance. Unless you're doing something weird then all the logic signals on a grbl board will be 5V, so 10 Ohms -- I = 5 / 10 --> 500mA 100 Ohms -- I = 5 / 100 --> 50mA 1K Ohms -- I = 5 / 1000 --> 5...
by potatotron
Thu Dec 12, 2013 5:01 pm
Forum: GRBL
Topic: Resistor and capacitor for limit switches
Replies: 8
Views: 2363

Re: Resistor and capacitor for limit switches

What it scares me is that the switces are just a tiny smd kind with soft movement at trigger (I removed them also from a dvdrw device) and these seems to not be able to afford too much current (I guess..) . Would a so low resistant like the 1K could harm them at all? 1K Ohm @ 5 Volts = 5mA which is...
by potatotron
Wed Oct 09, 2013 4:32 am
Forum: tinyG
Topic: Should I get TinyG?
Replies: 9
Views: 3501

Re: Should I get TinyG?

Now that Intel has announced an Arduino hardware-compatible board, but with a Pentium-class CPU, I'm curious about building LinuxCNC for it to use a Grblshield. I wouldn't hold my breath, at least for this first version. Although the Intel / Arduino Galileo will have a much more powerful CPU (32 bi...
by potatotron
Fri Jul 05, 2013 5:31 pm
Forum: tinyG
Topic: TinyG First Time Use... Error on setup???
Replies: 7
Views: 2211

Re: TinyG First Time Use... Error on setup???

I can see that my one motor is working in reverse and I was trying to fix that with polarity, but perhaps that is not the way. For what it's worth, polarity is how I fixed this with my TinyG setup. My Y axis is motors 2 and 3 and I have these settings: $2po=0 $3po=1 Alternatively, WillAdams' recomm...
by potatotron
Thu Jun 13, 2013 5:53 pm
Forum: Discussion
Topic: Is Synthetos Alive? YES and issue RESOLVED.
Replies: 10
Views: 1783

Re: Is Synthetos Alive?

I seem to recall that that happened with the first TinyG board I ordered -- PayPal was charged and no direct communication and I started to get worried, then POP the board showed up in my mailbox a few days later. I think total time from order to delivery was 10 or 12 days (I'm sure most of that was...
by potatotron
Tue May 28, 2013 6:06 am
Forum: Discussion
Topic: Jogging a machine w/ a Wii Nunchuk?
Replies: 5
Views: 1093

Re: Jogging a machine w/ a Wii Nunchuk?

Well, it shows how to read a Wii nunchuck from an Arduino, but it does it with regular Arduino code controlling servos, not as an extension to grbl controlling stepper motors that most of our machines use. I'm sure you could glue the nunchuck code into grbl, but it would be a little more involved th...
by potatotron
Sun May 19, 2013 1:02 am
Forum: Assembly
Topic: Insertion nut screw shaft too large for makerslide
Replies: 9
Views: 2294

Re: Insertion nut screw shaft too large for makerslide

Just to rule out the obvious...have you tried flipping it over? The part that protrudes from the insertion nut should face inward toward the MakerSlide.
by potatotron
Fri May 10, 2013 2:28 am
Forum: Design Ideas
Topic: My $0.99 dust shoe
Replies: 4
Views: 4578

Re: My $0.99 dust shoe

Hi everybody,

I've been using my ultracheap dust shoe for a few weeks now and so far so good. Here it is in action:

http://www.youtube.com/watch?v=Smoe_385paY