powering motion sensor kit with a single lithium battery

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Valerio Catalano

Aug 20, 2022, 10:39:43 AM8/20/22
to PrivateEyePi
Hi all,
I'd like to power both the motion sensor (5-20V) and the wireless switch (2.2-3.3V) with a lithium battery (3.7V)

I was thinking about:
connecting the wireless switch directly to the battery
using a step up circuit (from 3.7 V to 5 V) between the battery and the motion sensor.

Do you think this is feasible?
otherwise how do you suggest to power both circuits with a single lithium battery?

Thanks a lot,

Glenn Seaton

Aug 21, 2022, 10:18:00 PM8/21/22
to PrivateEyePi
The 3.7 volt battery would destroy the sensor processor, its limit is 3.5 volt.
The best option would be a usb battery pack and a 5 volt to 3 volt DC to DC converter like the ones JemRF uses on the WiFi Devices.
Details at: https://www.jemrf.com/collections/accessories/products/dc-5v-to-3-3v-step-down

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