[[basicstamps] Suddenly unable to communicate with Stamp 2p]
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If you've removed the chip and put it back in and it behaves the same, it's
not a lockup.
How were you driving the motors? If you directly connected the motor to I/O
pins, the inductive kicks from the motor coil may have damaged the chip.
not a lockup.
How were you driving the motors? If you directly connected the motor to I/O
pins, the inductive kicks from the motor coil may have damaged the chip.
Comments
wrote:
> If you've removed the chip and put it back in and it behaves the
same, it's
> not a lockup.
>
> How were you driving the motors? If you directly connected the
motor to I/O
> pins, the inductive kicks from the motor coil may have damaged the
chip.
I have a quite complex circuit that, in a nutshell, uses a variable
voltage regulator and some other passives to convert the stamp's PWM
output to a variable 2-12V output for two motors. There should have
been no reverse current back to the stamp because the motors are
controlled by the voltage regulator and not by the stamp itself.
I have not tried the same circuit on the stamp 2 or 2e that I have
however.
-Dan