Simple But Beautifully Accurate PWM Frequency Meter.
Project showcase by Arduino World
A RealTime Battery Indicator For Your Project Without Extra Components Or Using Any Analog I/Os
It Is A Great Way to See Live Next To You How Many Subscribers Are On Your YouTube Channels Without Going 100 Times To your Channel To See.
Easy DIY method to test capacitors
Project tutorial by brzi
Dear user , the idea is simple , when you design a project and this project is powered by a battery you certainly will need a battery indicator which will provide you with information about how much power is left in the battery, and this is what this project is aims to do , it is actually not a complete project,it is like addon to you existing project , i hope this explains it to you simply.
Yes you are right , maybe because of the power supply , usb is low power , try using external battaries that can support more amps , or you can do as you done by adjusting the voltage levels.
Sure it will be simple , just change the input from the internal voltage to analog read and change level voltage to fit every battery specs , however the idea here is using the internal features of the chip and maximize the things you can do with less hardware added , thanks for your comment :)
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