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Hi,
Iām trying to get the value of my battery using an analog input of my ATTiny85 to create a gauge. To do this, I made a voltage divider to avoid draining too much battery. The problem is that I donāt understand why, after letting my project (which includes sensors and a screen) run for more than 24 hours, Iām still getting an input value of 512 with an `analogRead()`.
I havenāt applied any calculations yet, just retrieving the value from my voltage divider. But this value doesnāt budge at all… Iām using a 3.7V 400mAh LiPo battery.
Hereās my schematic.
Hello, using a multimeter, measure the voltage of the battery. Lets start from there
Related to that, I would highly recommend using the TinySnore library if you’re concerned about optimizing power usage. I used it in another project that uses a CR2016 battery and it’s able to run for ~a few weeks using intermittent monitoring of inputs: https://embeddedcomputing.com/technology/processing/chips-and-socs/tinysnore-turns-your-attiny-into-a-low-power-prodigy (granted, my device is just sitting there most of the time)
Hi @afuevu_ I’ll grab a multimeter and check the battery voltage now. I’ll update you shortly.
Thanks @jeremycook for the recommendation! I’ll give it a try.
Appreciate the link! šš»
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