BS2 & DS3658 High Current Stepper Driver
PLEASE VIEW THE FOLLOWING MS WORD DOCUMENT DESCRIBING MY PROBLEM
I NEED HELP WIRING UP THE BS2PX AND THE DS3658 HIGH CURRENT DRIVER - I AM USING THE EXAMPLE FROM STAMP WORKS (V2.1) EXPERIMENT 27: STEPPER MOTOR CONTROL.
ALL I AM DOING IS SWAPPING THE DRIVER CHIP AND AM UNABLE TO GET IT TO WORK.
THANK YOU SO MUCH!
fdawg
I NEED HELP WIRING UP THE BS2PX AND THE DS3658 HIGH CURRENT DRIVER - I AM USING THE EXAMPLE FROM STAMP WORKS (V2.1) EXPERIMENT 27: STEPPER MOTOR CONTROL.
ALL I AM DOING IS SWAPPING THE DRIVER CHIP AND AM UNABLE TO GET IT TO WORK.
THANK YOU SO MUCH!
fdawg
Comments
Sure thing - i understand - in one configuration (one chip) i'm sourcing current and sinking in the other.
i have the data sheets and followed their application schematics.....
it almost leads me to believe i might have a bunk batch of driver chips - i do have more coming in today....i mean - even if the leads are reversed, the stepper should still be energized - i just cant get it to energize....
i discussed this issue with some folks at work who have some stepper experience and tried a couple different ways...
i attached a microsoft word document to my initial post below (ds3658&stamp_final.doc) - it details how i wired it up and about the code, components, etc...
thanks again - i'll keep updating my efforts
Also, the driver got super hot.
I wondre if i should be toggle the enable as i drive each step in order to reduce heat?
Also, the stepper is energized, but i am easily able to overcome and turn the shaft by hand - it doesn't seemed energized entirely...
and - i just lost power to the boe(need to take a multimeter to it and figure out what the heck happened) - i have a couple spares tho....
i grabbed another 2px off another project and am back to business....
Go back to basics and decide (on paper!) what kind of pulses you want to produce to what windings in what order for how long, etc.
Make sure it makes sense, then look at your program to make sure that it will produce the signals needed for the driver.
Then look at how you've really hooked up the driver (not what you think it should be) and make sure it will do what you expect.
Then and only then should you apply power. You might want to run the enable line into the Stamp so the Stamp can turn on the
driver only when it's ready to step the stepper and turn it off otherwise. When the Stamp is reset, the enable output will be off
(if you use a pulldown resistor on it).
It gets expensive to have to replace parts because of catchable errors.