I think i should tie the FET inputs lightly to ground...lol. Just in case..
oh a 330 uF capicitor across the power supply eliminates the spikes, and does'nt round the edges too much..

 

this is my new setup.. that is the ICSP cable on the front..cool huh..
my next step is to drive the steppers with just the pic..

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i wanted to post this page because somone asked about the sharp ir sensor..

http://www.robotprojects.com/sensors.htm

 

ya know those polaroid sonar sensors , this page talks about how to use one..

http://www.robotprojects.com/sonar/sonar.htm

 

hey what steppers did you use and how much current\voltage do they take?
i´m thinking of mooving my own robot with steppers but when i put my stepper running on the table without any wheels or anything then it seems that the stepper is to weak i have a 5V\0.5A stepper and controller is uln2003a and pic

 

they are unipolar.. six wire steppers with 2.3 ohms resistance..and i am using 5V to drive them.. the measured current is 1.4A... dosent add up..does it..hmm

 

That's because it's not a resistor :lol:

__________________
PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk

 

hey again!
but wenn you take off the wheel and then drive it and hold it with fingers will youre stepper stopp? well i mean of course that you dont grab it wery strongly but enaugh hard(cant say the exact amount of force :wink:

 

mine have a fair amount of torque.. when i run them if i grab the wheel tightly.. the rim will keep spining..
you have no torque on your steppers ?

 

i am driving them with the exact configuration as Nigel has on his site except i am using IRF 510's instead of the ones he is using..

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hey again!
ok mine are to weak. where did you get those? Did you bought them? All i have tried are all from copymashines\printers\etc. and it seems they are all toooo weak. :cry:

 

yes they are from a copier/printer also

 

could you say all the information about them? all what is written on them...(if this is not mutch trouble)

 

well i've had a pretty good morning..
I found not one , but two 12V 2.3Ah batteries at a garage sale, they came with a Bell Atlantic Special Edition Cell Phone..Very early model..
$3.00!!!
Can U say Robot Power...lol

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