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OT: hack a Fibaro door sensor
Eternity
Member
I have an old unused Fibaro door sensor with an external input:
I would like to connect it to my old school doorbel, which in fact is a simple push button. So far, so good.
Before doing this, I would like to make the Fibaro mains powered. Simple reason; I want to "connect and forget" avoiding to ever have to replace the battery. I have several Aeotec Sensors that are mains powered by usb phone chargers. Can I do the same with the Fibaro?
Unfortunately, my electronic knowledge is poor to say the least). First hurdle is the voltage; the average usb adaptors are 5V and the battery is 3,6V. Would using an adaptor damage the sensor?
Is it wise to hardware to the existing battery connectors?
I would like to connect it to my old school doorbel, which in fact is a simple push button. So far, so good.
Before doing this, I would like to make the Fibaro mains powered. Simple reason; I want to "connect and forget" avoiding to ever have to replace the battery. I have several Aeotec Sensors that are mains powered by usb phone chargers. Can I do the same with the Fibaro?
Unfortunately, my electronic knowledge is poor to say the least). First hurdle is the voltage; the average usb adaptors are 5V and the battery is 3,6V. Would using an adaptor damage the sensor?
Is it wise to hardware to the existing battery connectors?
Comments
My Fibaro door sensor has a 3V batery in it the CR123A
If you want to use 5V input, you can put a simple DC/DC convertor between them.
https://www.conrad.nl/nl/hn-power-sim1-0503-sil4-dcdc-converter-print-5-vdc-3-vdc-300-ma-1-w-aantal-uitgangen-1-x-156679.html
just 5 volt DC in and 3 volt DC out..
I came up with an even simpler idea; use an old / not used adaptor instead :-)
Must have a box somewhere with a pile of those... hope to find one with a 3 to 4 volt output.
edit: strange looking trough the manual, it states that the battery is 3.6 Volt, but it comes with a CR123A that is 3 volt.
Yes, I was about to comment on the battery, too
Mine has the above battery installed.
I found an adaptor and it states 3V but I measure 4,88 volt without a load....
Another one stated 3,6 and gives 3,6V so I guess I have a solution :-)