Forum: About this Forum
Wed 14 November 2018, 12:04
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Replies: 21
Views: 63,960
The video that Mike suggested would let others...
The video that Mike suggested would let others look over your shoulder. If you set the G1 feed rate to a low number so that the DRO can be watched as the z-axis slowly moves, it would be easier to...
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Forum: About this Forum
Tue 13 November 2018, 15:11
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Replies: 21
Views: 63,960
I guess I'm not understanding exactly the...
I guess I'm not understanding exactly the situation. In electricity, "zero" or "gnd" is the starting point, i.e., 5VDC is five volts above ground. So, the "zero" point when setting tool height, is...
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Forum: 50. Toolheads
Sat 03 November 2018, 22:06
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Replies: 4
Views: 13,141
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Forum: 70. Control Systems
Wed 31 October 2018, 10:15
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Replies: 1
Views: 8,351
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Forum: About this Forum
Mon 29 October 2018, 07:14
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Replies: 21
Views: 63,960
What I noticed is that you've written about a...
What I noticed is that you've written about a "machine zero" and a "job zero". To me, that means that the "machine zero" is found by using a touch plate laid on the spoil board and the "job zero" is...
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Forum: 70. Control Systems
Sat 27 October 2018, 15:44
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Replies: 1
Views: 8,351
Drive a relay via a transistor
I've received some questions about connecting a relay to a BOB with transistors. There are two drawings attached that show how easy it is.
One shows a 2N2222 NPN transistor (T1) that drives a...
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Forum: 70. Control Systems
Sun 21 October 2018, 10:35
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Replies: 0
Views: 6,624
Inexpensive way to extend control box functions
With the advance in electronics, don't overlook the inexpensive ways there are to greatly extend the capability of a control box. For instance, when using a water cooled spindle, it is very...
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Forum: 70. Control Systems
Sat 20 October 2018, 11:34
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Replies: 19
Views: 51,547
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Forum: 60. Wiring & Cable Management
Sat 20 October 2018, 09:38
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Replies: 1
Views: 20,889
It's time to rethink old wiring habits
I'm a creature of habit. Once I find a way to do something, I keep on doing it that way forever. Case in point: Last week I tried to make some good crimps using my "squeeze-apart" wire strippers...
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Forum: 70. Control Systems
Wed 10 October 2018, 22:06
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Replies: 19
Views: 51,547
One thing that I neglected to mention is that a...
One thing that I neglected to mention is that a 7.2:1 rack and pinion drive with a 25-tooth pinion moves the axis 0.5454 inches per stepper motor shaft revolution. A 1605 ball screw moves the axis...
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Forum: 70. Control Systems
Wed 10 October 2018, 21:23
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Replies: 19
Views: 51,547
A lot has changed since I wrote those early...
A lot has changed since I wrote those early posts. (I still have that original servo motor sitting on the shelf with the Geckodrive servo driver.) The ClearPath servos changed my mind.
Price:...
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Forum: 70. Control Systems
Fri 05 October 2018, 12:16
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Replies: 19
Views: 51,547
So far, in my limited testing, I can say only...
So far, in my limited testing, I can say only good things about the Acorn board. Centroid has excellent wiring diagrams on their website that show how to connect popular stepper drivers as well as...
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Forum: 70. Control Systems
Thu 27 September 2018, 19:16
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Replies: 19
Views: 51,547
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Forum: 702. Power Supplies
Sat 27 June 2015, 06:55
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Replies: 134
Views: 159,896
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Forum: 701. Motor Drives
Sun 17 May 2015, 11:20
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Replies: 17
Views: 31,083
Ken,
It looks like you're in Malaysia. I...
Ken,
It looks like you're in Malaysia. I don't know what Oriental Motor motors cost over there. Here in America, the 34-frame size, 350-450 oz*in motors cost $135 each, postage paid by Oriental...
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Forum: 701. Motor Drives
Fri 15 May 2015, 11:33
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Replies: 17
Views: 31,083
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Forum: General - MM Build
Wed 25 March 2015, 09:39
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Replies: 3
Views: 11,535
Read the posts under the "Electrical and...
Read the posts under the "Electrical and Electronic" section. You should find enough information to get started on your project. The electronics used with Mach 3 will work with a lot of different...
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Forum: 701. Motor Drives
Fri 16 January 2015, 12:22
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Replies: 1
Views: 8,419
Geckodrive announced the GM215 stepper motor drive
Geckodrive recently announced that their GM215 stepper motor driver is now available for about $250 U.S. If has a lot of features that are not needed on a CNC machine, but it has "sub microstepping"...
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Forum: 701. Motor Drives
Sat 13 December 2014, 11:12
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Replies: 0
Views: 8,306
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Forum: General - MM Build
Thu 21 August 2014, 11:01
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Replies: 16
Views: 23,661
Look at the way ball-screws are used on a...
Look at the way ball-screws are used on a Thermwood. Vibration is kept to a minimum. I'm sure that Thermwood has a patent, but I'm not sure how patents pertain to home-use, home-built equipment. A...
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Forum: Introduce yourself and start planning
Tue 12 August 2014, 08:27
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Replies: 31
Views: 147,861
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Forum: 70. Control Systems
Tue 29 July 2014, 08:07
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Replies: 29
Views: 33,438
All the stepper motors that I've ever used...
All the stepper motors that I've ever used "resonate" (growl) when they're run at a low speed where the "resonating" happens. The cure is to run them faster or slower. Usually the "resonating"...
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Forum: MechMates already cutting
Sat 21 June 2014, 21:13
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Replies: 382
Views: 225,565
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Forum: MechMates already cutting
Fri 20 June 2014, 17:19
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Replies: 382
Views: 225,565
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Forum: MechMates already cutting
Fri 20 June 2014, 12:10
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Replies: 382
Views: 225,565
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