Hi, i want to design a 18V voltmeter or you can say a battery voltage indicator using LM3914 LED Bar graph... i have checked a circuit which is showing a maximum of 5V on the bar graph connected with Arduino..
The voltage is sensed by the analog pin of the Arduino Uno and then further display on bar graph accordingly..
As far as i know analog pin of arduino uno can sense only upto 5V... but i need to display a maximum of 18V... So is there is any possible way to do the same
or can i use any other microcontroller.... its better if you suggest me a solution with Arduino bcoz the programming an Arduino is simple..