Hi all, I'm new here and don't have much of a background in electronics, as much as I would have liked to (went into IT instead of electronics).
I have what seems to be a unique case, although I'm sure it's been done before. This thread sort of seems like what I'm going for: https://forum.allaboutcircuits.com/threads/how-to-use-a-drop-in-voltage-to-trigger-a-switch.114349/
So, basically, I need something small and cheap, like an arduino or a pi pico or something else that I've never heard of to simply look at the voltage level of two wires (positive and negative DC voltage, 13V Max) and when the voltage drops to about 5VDC, then I need it to turn on power (I don't care if it's the 5VDC signal that I'm watching to provide the power, or another 12V source).
I basically need something that acts like a reverse relay maybe? I'm reading about comparator's now, and I've never heard of them until today.
So basically, I'll have a 13v DC signal that will slowly drop, and when it gets down to 5V I simply want to power an LED.
Can anyone give me a basic list of things that I'd need to accomplish this and possibly some sample code if I have to write something and modify it for my needs to get me started? I'd greatly appreciate everyone's help!
I have what seems to be a unique case, although I'm sure it's been done before. This thread sort of seems like what I'm going for: https://forum.allaboutcircuits.com/threads/how-to-use-a-drop-in-voltage-to-trigger-a-switch.114349/
So, basically, I need something small and cheap, like an arduino or a pi pico or something else that I've never heard of to simply look at the voltage level of two wires (positive and negative DC voltage, 13V Max) and when the voltage drops to about 5VDC, then I need it to turn on power (I don't care if it's the 5VDC signal that I'm watching to provide the power, or another 12V source).
I basically need something that acts like a reverse relay maybe? I'm reading about comparator's now, and I've never heard of them until today.
So basically, I'll have a 13v DC signal that will slowly drop, and when it gets down to 5V I simply want to power an LED.
Can anyone give me a basic list of things that I'd need to accomplish this and possibly some sample code if I have to write something and modify it for my needs to get me started? I'd greatly appreciate everyone's help!