bindebende
commented
6 years ago - measure input voltage with 1/6 voltage divider
- digital resistor in the feedback signal of the LDO's (remove the fixed resistors) Cons: +-20% accuracy http://hu.farnell.com/maxim-integrated-products/ds3501u/digital-pot-10k-single-usop-10/dp/2515880?ost=DS3501&iscrfnonsku=false&ddkey=http%3Ahu-HU%2FElement14_Hungary%2Fsearch
- ADC http://hu.farnell.com/maxim-integrated-products/max11647eua/adc-2-ch-sar-10bit-94-4ksps-umax/dp/2513428?ost=MAX11647EUA+&scope=partnumberlookahead&exaMfpn=true&searchref=searchlookahead&iscrfnonsku=false&ddkey=http%3Ahu-HU%2FElement14_Hungary%2Fw%2Fsearch