Initially, I was thinking of making a digital system. Maybe, a microcontroller with inbuilt ADC (say ATMEGA 32) and a 2x20 character LCD. But this circuit seems so easy and frankly, a digital system seems to be an overkill, if used for battery voltage alone. Maybe someday, will make a digital system with temperature readings, battery voltage etc. And then, there is the question of mounting the LCD somewhere on the console.
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