Hi all. Im new to the electronics side of things so forgive me if its a stupid question.
I have an openlog sd card logger that is logging serial data from my uno. The log writes every one second to the card and pulls extra current during the write time. This spike every second is causing a radio transmitter in my circuit to change frequency as the digital write pin that is keying the radio high and low is being effected by the voltage spike. If I disconnect the logger the radio works fine.
I need some way of cleaning up the high and low from the digital output pin to be dead on 0-5v, or at least consistently the same high and low voltage.
Any ideas how I can do this?