ON 20050913 at page: http://www.massmind.org/techref/io/stepper/linistep/halfstep.htm someone[--] edited the page. Difference: "R:\bak\H\techref\io\stepper\linistep\halfstep.htm.20050913.dif" ON 20050913@11:44:44 PM at page: http://www.piclist.com/io/stepper/linistep/halfstep.htm#38608.3248958333 James Newton[JMN-EFP-786] Published and replied to post 38608.3248958333 |Insert 'Please do' at: '' This "Hi-Torque Half Stepping" idea is really brilliant.
I find that I can apply this procedure to my existing resonating, buzzing and skipping design whit very litle effort.
As I'm using scavenged STK6713BMK4 "hybrid" chips from Sanyo, all I need is a few extra resistors and transistors, and 2 aditional I/O lines from my microcontroller.

For those few who might happen to have a few of these floating about, I might provide my design, if you like. |Delete 'P-' before: '' but after: 'brst55@yahoo.com asks:
dear sirs or sirettes,I am trying to sequentially control some coils at fast rates for a type of linear motor control can i use your equip. to do that please respond Bruce
  • ' ON 20050925@11:53:42 PM at page: http://www.piclist.com/techref/io/stepper/linistep/faq.htm#38619.6017361111 James Newton[JMN-EFP-786] Replied to post 38619.6017361111 by BMS-yahoo-P21 |Insert 'Hi Bruce it sounds like you want a controller to fire coils in a linear motor? Yes the lini module can do that but you would probably need to re-program the internal PIC software to do it and even then it will only work for 4 (or less) coils. The max speed is determined by the software, since the PIC is crystal resonator locked you could program it to be the firing controller and you could fire the 4 coils in sequence at a very high rate, about 2MHz i think. You might want to look at the 4017 logic chip, this accepts a simple clock input and drives TEN outputs in sequence. It can do the high speed you need and you just need up to ten transistors for your coils. For best results do a search on ("linear motor" controller) as there are commercial modules. -Roman :o)' at: '' Bruce M. Stump Says: " Does anyone know if linistepper can be used to control coils sequentially at high speed for a homemade type linear motor " ON 20050926@3:44:25 PM at page: http://www.piclist.com/techref/io/stepper/linistep/lini_wks.htm#38619.6156134259 James Newton[JMN-EFP-786] removed post 38619.6156134259 |Delete 'Bruce M. Stump Says:
    Dear Mr.Newton,Will your linistepper work to control several coils in a row sequentially at fast adjustable speeds for a homemade linear motor.PLEASE RESPOND ASAP.BRUCE
    ' ON 20050926 at page: http://www.massmind.org/techref/io/stepper/linistep/faq.htm someone[--] edited the page. Difference: "R:\bak\H\techref\io\stepper\linistep\faq.htm.20050926.dif" ON 20050926 at page: http://www.massmind.org/techref/io/stepper/linistep/index.htm someone[--] edited the page. Difference: "R:\bak\H\techref\io\stepper\linistep\index.htm.20050926.dif" ON 20050926 at page: http://www.massmind.org/techref/io/stepper/linistep/lini_wks.htm someone[--] edited the page. Difference: "R:\bak\H\techref\io\stepper\linistep\lini_wks.htm.20050926.dif" ON 20050926 at page: http://www.massmind.org/techref/io/stepper/linistep/new200509.txt someone[--] edited the page. Difference: "R:\bak\H\techref\io\stepper\linistep\new200509.txt.20050926.dif"