Circuit to Convert single pin to dual High & Low for driver direction
Some of Bill's designs use 2 Arduino pins to provide the high and low signals to a motor driver board. My Uno is already pin limited as I have lots of inputs and outputs. Is there a way to use some external circuit to take either a high or low on one Arduino pin and provide both high and low signals to the motor driver directional inputs?
Do you mean so that the single pin gets split into both HIGH and LOW simultaneously ?
Output the original value on the pin and run it through a NOT gate (inverter) to get the opposite.
Maybe you could salvage some currently used pins with a shift register ?
Thanks for your response.
Since I'm also space limited on the proposed board, instead of an inverter dip device (I don't do surface mount-yet) I'll probably try just a single MOSFET connected as a simple amplifier. An issue to be dealt with using the FET, is noise on the power supply lines produced by the 1 amp DC motors. This noise, in spite of regulation, filtering, and transient noise suppression diodes, has been a problem with previous discrete implementations.