Has anyone used this motor with the linstepper2?
Open source firmware and board layout freely available
Low parts-count and cost for home building
Low kit price to get running on a budget
Smooth / low resonance modes for better performance
Faster / more reliable operation w/ low cost surplus motors
I had problems with programming also. I built jdm2 programmer, and finally was able to program my 16F628A using WinPic and using slow mode. I made that Sam Waters version of linistepper and it works nicely. Strangely i get much better rpm with Mach3 than with EMC2, and full step is much smoother than 1/2 or microsteps.
A higher voltage, lower amperage motor would be a better fit. For example:
http://www.alltronics.com/cgi-bin/it...-stepper-motor gets you quite a bit more torque for a reasonable price. There is a list of good motors for the Linistepper at:
Thank you for the info James. I want to try and avoid purchasing more equipment if possible. I have a few bipolar nema23 motors I might try and dig up more info on.
Just realized that I hadn't pointed out one good option for finding nice Stepper motors on the cheap: Several of the motors listed at
http://www.piclist.com/techref/io/st...tep/motors.htm are found in old laser printers and photocopiers. If you call up the local computer and office equipment repair places, they often scrap these old units and will happily give them to you in return for towing them off. Once you pull the motors (any anything else you want) you can dispose of the rest for them in return. I've gotten a number of stepper motors out of old printers this way. The old HP printers had some monster motors in them!
I've updated the list of motors that should work well with the Linistepper to add some good options and make it really easy to find motors online. There is now a Find column that you can click to search google for the mfgr and model. After you get the first page of search results, if you want to narrow it a bit, click on "Shopping" at the top of the page and google will show you only entries that are known to google to be product listings.
There is also a form at the bottom to submit your suggestions for new stepper motors. Please limit them to unipolar capable only (5 to 8 wire, NOT 4 wire) motors and lower amperage ranges. e.g. less than 2 or 3 amps per phase.
If you like the layout of the database, I wonder if another version for all types of motors would be useful? Perhaps with a set of columns for the pin out or wire colors if they are known?
Any one send me a hex. for linistepper ver 2..
Slightly modified Sam Waters V2 eagle files. Some minor modifications was added. Built and tested with PIC16F628-20/P.
Just a quick question about motor compatibility.
I have been reading the PIClist, Microchip PIC webpages and cannot find any confirmation that the Linistepper V2b board is compatible with steppermotors that rotate at anything other than 200 steps / rev (1.8 degrees). Logically I cannot see why this should make any difference, but I have not found any "official" confirmation of this.
I read with interest the pcbheaven.com review:
The motors I intend to use are "Howard Ind. 1-19-4201" with the following specification (gathered from the internerd ... if anybody has a copy of the datasheet for these, I would be very grateful for a copy):
Step resolution 3.6deg (100 steps per rotation), Operating voltage 24 V, Line resistance 140 Ω, Continuous current 160 mA, Wiring: common=black, A+= brown, A-=red, B+= green, B-= white.
Any comments on the suitability of these motors would be greatly appreciated.
Last edited by spiritlodger; 01-26-2011 at 09:36 PM.
You are right, it doesn't make any real difference and the Linistepper does work with any 2 phase, unipolar motor up to a few amps (depending on the mode) and between about 9 and 35 volts no matter how much it turns when you step it.
Those motors should be fine, but you will need to adjust the sense resistors way up to keep from overdriving them.
And, by the way, I'll have kits back in stock around the end of this week.