I am a total beginner at electronics and I am cutting my teeth on attempting to hack in to an RC transmitter and replace two pots with a low pass filter on a PWM signal.
I got the PWM signal smoothed out with an RC filter, however after hooking up the transmitter to a scope I'm seeing a square DC line.
When both channels of the scope are calibrated the same my PWM>DC signal looks perfect at 1V, but the top of the the transmitter's wave reads about 7.5V when the volt meter reads 1V.
I'm assuming something on the TX board is causing this to pulse somehow but I'm not sure how to replicate it.
Any direction is appreciated!