I was surfing the postings on AVRfreaks site and came across an interesting topic where someone asked how and if they could measure the battery voltage that was powering their AVR chip. There were the normal suggestions of using a voltage divider across the battery and changing the A/D reference to…

Measurement of Bandgap voltage

Coding_Badly January 14, 2011, 10:24pm 12

Lefty, I have a variation that uses Noise Reduction Sleep Mode. Interested?

Topic		Replies	Views
Does any 8-pin AVR let you select 1.1V as the ADC channel? Project Guidance	6	568	July 25, 2022
Measuring the source voltage using internal 1.1V reference Project Guidance	16	6264	May 5, 2021
Detecting battery voltage using bandgap / internal 1.1V reference General Electronics	4	2278	May 6, 2021
Funny Reply Programming Questions	3	847	May 5, 2021
Obtaining Vcc on 1284/644 using bandgap method Programming Questions	10	2954	May 5, 2021