I’m making a handheld out of a Raspberry Pi 4.
So I found that one of the features of the "LiPo SHIM for Raspberry Pi ",
will automatically do a safe shutdown of the Raspberry Pi, when it has a low battery.
So far so good.
But I want to be able to charge the battery as well,
without having to get the battery out of the handheld case everytime it needs to be charged.
On the product page it says :
" You will need a separate charger to keep your LiPo/LiIon batteries topped up!
We recommend the Adafruit Micro Lipo or PowerBoost 1000 Charger"
Does anyone here know how we are supposed to connect the Powerboost 1000c to the Lipo Shim ?
I’ve read somewhere that you can use a “double pole double throw switch”,
but no info on how to do that. And also no info on wether or not the safe shutdown features will still work when making this connection between the Lipo Shim and the Powerboost charger.
Sure, the Powerboost 1000c has a low battery (LBO) pinout, but you can’t connect this directly to the GPIO pins, but the GPIO pins can only handle 3.3v input.
The voltage that comes from the LBO pinout is higher than 3.3v.
So after lots of searching I came across the Lipo Shim,
which does exactly what I want right out of the box.
Except the charging the battery part.
So can anyone help me (someone with almost no technical experience)
figure out how to have a shared connection between the Lipo Shim, the battery
and the Powerboost 1000c charger and make it that the low battery safe shutdown feature still
Thanks in advance.