Introduction - If you have any usage issues, please Google them yourself
ATMEGA8_ LTC2400 6 ½ -digit meter program LTC2400 highest measured voltage is 5.3V, 5.3V or reverse will be burned over. After 7815 some of the best analog power supply voltage, the maximum input voltage should not exceed 18V. Separate analog and digital circuit power supply. Do not use a switching power supply or PWM buck, boost circuitry