Hi guys.
I know this might sound like a stupid question but how do i use a Pot to vary the resistance to ground. The reason i ask is because i am doing a project at university where the output from an infrared transistor goes first to an atmega88 's ADC an then to ground through a resistor (normally 10 k ) but i want to use a POT to vary the amount of voltage getting to the atmega88 (changing the sensitivity). Could someone please explain how i am meant to hook the pots up to achieve this.
Cheers
I know this might sound like a stupid question but how do i use a Pot to vary the resistance to ground. The reason i ask is because i am doing a project at university where the output from an infrared transistor goes first to an atmega88 's ADC an then to ground through a resistor (normally 10 k ) but i want to use a POT to vary the amount of voltage getting to the atmega88 (changing the sensitivity). Could someone please explain how i am meant to hook the pots up to achieve this.
Cheers