winnetouch
New Member
Hy. I am planing on doing a simple raspberry pi project. I will power the chip with a 5v powerbank. The problem is that the raspberry pi zero (or the powerbank itself) does not have any means of indicating if the battery has enough charge to power it. I don't want the battery just to cut out when it's empty I want to power down the pi safely.
I want to make a simple circuit that will light up an LED when the voltage of the battery gets to low. The raspberry pi needs at least 3.3 volts to run so if the led would light up at about 3.5 volts that would be awesome. But most circuits I found online are overcomplicated for what I need with multiple LEDs or connecting to the raspberry pi GPIOs that I find unnecessary (not to mention I have them all populated anyway).
So finally my question. Is there a simple circuit I can connect to a 5v battery that will light up an LED when the voltage drops to 3.5v? I am no electronics wiz... This project is basically how I want to learn some basics. So please be patient if I don't understand everything.
Thank you
I want to make a simple circuit that will light up an LED when the voltage of the battery gets to low. The raspberry pi needs at least 3.3 volts to run so if the led would light up at about 3.5 volts that would be awesome. But most circuits I found online are overcomplicated for what I need with multiple LEDs or connecting to the raspberry pi GPIOs that I find unnecessary (not to mention I have them all populated anyway).
So finally my question. Is there a simple circuit I can connect to a 5v battery that will light up an LED when the voltage drops to 3.5v? I am no electronics wiz... This project is basically how I want to learn some basics. So please be patient if I don't understand everything.
Thank you