On Tue, Mar 20, 2018 at 1:44 PM, Ralph Hulslander rhulslander@gmail.com [7x12minilathe] <7x12minilathe@yahoogroups.com> wrote:
With that pulse signal generator how do you change Direction?I usually just use a Arduino to drive my steppers.
Yes, an Arduino or the like is better but I have the signal generator already for other kinds of electronic projects both audio and RF. I'll certainly use a computer of some type later. This is just a simple mechanical test to see if the parts fit and move.
You can't change direction with a signal generator. I have a toggle switch in my left hand, just out of the video frame. The inputs to the driver electronics are "step" and "direction" so it is easy to use a signal generator and a switch.
I'm building this as a full CNC machine but I want to think of a way to use it manually too. Likely I will make some kind of hand held pendent but I don't know what it will look like yet other then likely using this part: Hand-Wheel-Manual-Pulse-Encoder
RalphOn Tue, Mar 20, 2018 at 4:00 PM, Tim Iafolla iafollatim@yahoo.com [7x12minilathe] <7x12minilathe@yahoogroups.com> wrote:If anyone wants to experiment with a driven x-axis, here's a very inexpensive pulse generator that works fine for manual control of a stepper--about $4 shipped:Feed it 9VDC, hook the clock and reverse outputs to a stepper driver, and fiddle with the knob to adjust the speed of the motor; mash one of the buttons for forward/reverse, and the other for e-stop. If it's a small motor you can even run power (up to 24V 1A) through this little guy to the stepper driver; for larger motors use this piece for pulse and f/r signals only and use a separate larger power supply to drive the motor.Speaking of motor and driver, this looks like a good value ($34):You might need to go up a size on the motor and driver for a larger mill. But to experiment with driving an x-axis for a small mill, under $40 ain't too bad.TimOn Monday, March 19, 2018, 11:27:05 PM EDT, Chris Albertson albertson.chris@gmail.com [7x12minilathe] <7x12minilathe@yahoogroups.com> wrote: For low speed as a power feed the basic setup would cost about $80 for the motor, driver power supply and so way to control it.On Mon, Mar 19, 2018 at 8:13 PM, soffee83@yahoo..com [7x12minilathe] <7x12minilathe@yahoogroups.com> wrote:Thanks for the explanation Chris, I figured there was something keeping it in check.
- also for the ideas on the stepper/power feed thing. Might be something to think about as I was already considering some sort of low tech driver for the X-axis. I'll have to look into the pricing, but I've got other projects in progress.
Take Care--
Chris Albertson
Redondo Beach, California
Chris Albertson
Redondo Beach, California
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Posted by: Chris Albertson <albertson.chris@gmail.com>
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