Circuit not working consistently latest update
- Thanks to Triffid Hunter and Douglas Warren Bell for your sujestions.
I was obviously being facetious with the "fire rule" reference. Yes, I
have roasted some resistors, but the incidents of those have been due
as much to impatience as to inadequate electronics knowledge. I would
never be so reckless as to attempt potentially dangerous projects
without the proper knowledge.
I'm sorry I was'nt clearer in my last post, but I meant to say I'd try
the PWM with the 9V signal but use the 1.5V signal to drive the motor
continously, not do both. In any case, as Douglas Warren Bell
corrected predicted, it did'nt work. I learnt a little detail that
might have been obvious to others: The motor might operate at a
certain voltage, but it only gets it because the driver chip receives
the voltage that it requires to work. It seems like the most obvious
thing in the world, but it has actually cleared up a lot of the
confusion that I was experiencing.
My pulse width modulation project is going along fine. I did'nt have
too much success with 17% (the motor is connected to a very small
load). I ramped it up to 55% and the circuit has been working well for
seven hours now, and the L293d is barely warm.
I continue to study electronics avidly, and I remain very grateful to
you for all your sudjestions.