I am currently using the BOB-13601 in an application that drives a linear actuator. Unfortunately it seems that on startup (maybe during the pinMode call?) the BOB-13601 flashes high. This cause the actuator to move slightly. Is there a way to keep this from happening? I am using the latest SparkFunSX1509 library to communicate with the board.
Thanks,
Jon
You might have some luck adding an inline capacitor between the board and the actuator…something like this https://www.sparkfun.com/products/523 (more here https://www.sparkfun.com/categories/326 - not sure what specs the actuator and board are running at, but you could get a few and do some testing?)
Hmmmm… I will see if that will at least mitigate the issue, but are you saying that the 1509 on the board will always flash the outputs when it is powered on / pins are set to output?