Status Light And Battery Monitor...

[SolderBoy]

Hi everyone. 

Personally, I use pedals on batteries most of the time, so I looked around for a circuit that did this, but had no luck.  So I designed one myself.  A dual opamp as two comparators, and a bi-colour LED.  It goes from green to red at 7.3V, but it's a simple circuit, and you can set it up how you like.

If you are interested, I made a video for my YT channel about it.  I'm still new at making YT content, and it is hard to gauge just how "explainy" to be.  I welcome your (constructive ) input.  Cheers!

[antonis]

A dual opamp as two comparators

Although it looks fun to use an op-amp as voltage comparator, shouldn't be more convenient to use a dual comparator like LM293/393/2903, designed and destined for this very use..

[SolderBoy]

As I mentioned in the vid, I was using what I had on hand.  Feel free to sub in your favourite comparator if you like.   


Cheers!