jbatx
I make stuff with things
...this seems like a reasonable forum for this post.
I have a few esp32 based devices in my utility container (20' connex).
Three monitor the batteries using serial connection to Overkill bms's.
One monitors water flow and usage and toggles a uv sterilizer.
Right now, the devices are usb powered from the main inverter. The work fine.
The problem I'm trying to solve for is that in the event of an inverter shut off, I want the devices to continue to function.
I want them to run after inverter shut off until the bms's cut discharge.
This is the gap between about 47v and about 42v when one or another cells drops to 2.5 and a bms does a low voltage cutoff. I want to be able to monitor that gap.
Seems like a simple problem to solve and I could probably do it fine on my own. However, I value the brain power and experience of this community.
A 48v to 12v converter is easy enough. Then, I need to go from 12 to 5v or a very stable 3.3. To power the esp32's
What hardware would you use for this?
What would you do?
I have a few esp32 based devices in my utility container (20' connex).
Three monitor the batteries using serial connection to Overkill bms's.
One monitors water flow and usage and toggles a uv sterilizer.
Right now, the devices are usb powered from the main inverter. The work fine.
The problem I'm trying to solve for is that in the event of an inverter shut off, I want the devices to continue to function.
I want them to run after inverter shut off until the bms's cut discharge.
This is the gap between about 47v and about 42v when one or another cells drops to 2.5 and a bms does a low voltage cutoff. I want to be able to monitor that gap.
Seems like a simple problem to solve and I could probably do it fine on my own. However, I value the brain power and experience of this community.
A 48v to 12v converter is easy enough. Then, I need to go from 12 to 5v or a very stable 3.3. To power the esp32's
What hardware would you use for this?
What would you do?