t.man New Member Nov 21, 2008 #1 i'm having 0 - 2500mV as input to internal ADC so i want to use internal reference voltage (2.56V, in mega16). for the time being i want to use 10K pot to test ADC conversions and its accurancy. how can i make 2.5V( from 5V) supplying the pot?
i'm having 0 - 2500mV as input to internal ADC so i want to use internal reference voltage (2.56V, in mega16). for the time being i want to use 10K pot to test ADC conversions and its accurancy. how can i make 2.5V( from 5V) supplying the pot?
geko Active Member Nov 21, 2008 #2 t.man said: i'm having 0 - 2500mV as input to internal ADC so i want to use internal reference voltage (2.56V, in mega16). for the time being i want to use 10K pot to test ADC conversions and its accurancy. how can i make 2.5V( from 5V) supplying the pot? Click to expand... Create a potential divider using a 10K resistor beween one end of the pot and 5V supply, then you'll have 2.5 volts at the top of the pot
t.man said: i'm having 0 - 2500mV as input to internal ADC so i want to use internal reference voltage (2.56V, in mega16). for the time being i want to use 10K pot to test ADC conversions and its accurancy. how can i make 2.5V( from 5V) supplying the pot? Click to expand... Create a potential divider using a 10K resistor beween one end of the pot and 5V supply, then you'll have 2.5 volts at the top of the pot