LiniStepper v1.

Microstepping Stepper Motor Driver Kit

Roman Black - Aug 2002
This design is Hippyware
 


Kits now for sale!

PCB and full kit of parts to build your own!

US Postal Shipping
$30 each
 or 
$75 for 3!

BACKORDERED

Demand has again exceeded our expectations!
We expect to have units in stock again in two weeks

FedEx Express Shipping ($5 more)
 or 
$35 for 3 Boards!

Also available: Set of 3 boards for $35.00. These are VERY well made boards and are certainly worth the price IF you have a well stocked scrap box to populate them. With the kit of parts only $25 each quantity 3, I don't think you will ever find the parts for less from another vendor




* UNIPOLAR motors only (needs a 5,6 or 8 wire motor)
* 200 step - full step
* 400 step - high-torque half step
* 1200 step - microstep 6th!
* 3600 step - microstep 18th!

* Best suited for up to 1.5A /phase motors
* (Up to 2.5A/phase with some changes)
* 72mm x 50mm board size
* PSU voltage 4v to 35v
* low power "hold" mode
* constant current linear unipolar
* rugged 5A 100v transistors
* stepless operation, linear current smoothing
* on-board PIC chip + free source code
* "standard" step + direction inputs
* requires motor voltage and regulated +5v


Basically this is just a board I designed for my own use,
that ended up as a kit. It is easy to build and is well
suited for motors around 1A/phase. It can be re-configured to
do larger motors with some resistor changes and a large enough
heatsink.

I like things rugged and simple, which it is. Yes it is linear
and makes heat (like a big audio amp does). It has some
unconventional features like hardware AND software microstepping,
and current ramping to give almost "stepless" operation at
the tuned speed. And it will suit industrial apps with
continuous use etc, no "toy" stepper chips in this design.

3600 steps per revolution with a 200 step motor!

My original design goal was to make a board that could be used
for many different projects. If you choose you can modify this
design to suit different tasks. Circuit operation is simple and
easy to understand and test and PIC .asm source code is supplied.
Full indexing, motion control etc on one circuit board is possible
if you wish to reprogram it.



Almost stepless operation... The board can be "tuned" for a
specific speed band, and steps are smoother through ALL rev ranges
with the inbuilt step ramping.
How the board works (long).

Instructions! As this is a kit of parts, here is a page on:
How to build it

High-Torque half-stepping! I use a little known form of half-
stepping as one of the main modes. More about the special half-step
system: High-Torque half stepping

Circuit Diagram click here.

PCB (Board) Layout click here.

PIC Software click here to READ it.

PIC Software click here to DOWNLOAD it as a ZIP file.

Using the board!
Tips for using the board and keeping it cool.

How to tune the board for currents other than 1A. Tuning the
board for different sized motors requires changing the 2 sense
resistors, this page also covers software mods. More info here.




Picture of the linistepper driving a 5v 1A motor.
The other circuit board is a 555 timer and some dip switches,
that clocks the STEP input and can switch the DIRECTION and
LOW POWER inputs and change the stepping mode between 200, 400,
1200, 3600 steps/rev. The heatsink shown looks large as my camera
has a slight "fish-eye" lens.

-end

Feedback:

Questions:

Comments:


file: techref/io/stepper/linistep/index.htm, updated: 12/12/02 9:38:28 AM, owner: RB-ezy-Q33,
TOP NEW MORE.. SEARCH: 
LOG IN
PLEASE DON'T RIP!
These pages are served without commercial sponsorship. (No Advertisements). Bandwidth abuse will increase hosting cost and force sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE.

Did you find what you needed?
After you find an appropriate page, you are invited to your to this massmind site! (posts will be reviewed) Just type in the box and press the Post button. (HTML welcomed!): Members can LOGIN to post directly, become page editors, and be credited for their posts.

Link? Put it here: 
if you want a response, please enter your email address: 

piclist.com members can LOGIN to post questions, add public or private comments, links or even new pages(!). To start, fill out the form.
Quick, Easy and CHEAP! RCL-1 RS232 Level Converter in a DB9 backshell only $15.00
Ashley Roll has put together a really nice little unit here. Leave off the MAX232 and keep these handy for the few times you need true RS232!