A home made phone with Arduino

Hello dear all, there has been a gsm modem since many years and there has been a microcontroller present since many years, you may be owning both of them. But, have you ever wondered to make your own cell phone with both the things? If NO, you should be thinking to make some one as […]

AC RMS voltage measurement with AVR microcontroller

Hello friend many times the readers are asking for an AC RMS voltage measurement system with AVR microcontroller or any other microcontroller.This task can be divided into two sub tasks. 1)Attenuating Line voltage to the level that can be applied to microcontroller pin. Here is the circuit used to measure AC line voltage (230V,50 Hz) […]