amiller112
New Member
Hi, I have recently purchased a picaxe 18 starter kit, which has the UNL2803A driver chip between the PIC outputs 0->7, I can easily set the pic up to output to these pins, however the problem arises when I attatch a 4-wire bipolar stepper motor to the outputs of this chip.
I get absolutely no response from the stepper motor, though attatching a battery directly to the wires does have an effect.
I have tried individual wires and set the output to be high and low on either side of this, but nothing, I even attached an L293D to the outputs of the chip and still got nothing, I can see a pulsed signal going into the L293d chip, but the outputs are constantly high.
The wires on the stepper motor are: Red, Grey, brown and green
I appreciate any help in this matter, as I find the picaxe manual to be mostly useless
I get absolutely no response from the stepper motor, though attatching a battery directly to the wires does have an effect.
I have tried individual wires and set the output to be high and low on either side of this, but nothing, I even attached an L293D to the outputs of the chip and still got nothing, I can see a pulsed signal going into the L293d chip, but the outputs are constantly high.
The wires on the stepper motor are: Red, Grey, brown and green
I appreciate any help in this matter, as I find the picaxe manual to be mostly useless