Night bolt detection

Hardware
1

Hi all,

I want to make a night bolt detection with a external mechanical sensor in the lock. Does anyone have already made this or can suggest an idea what device with an external i/o should I use.

Thanks in advance

Bob

2

Show a picture of your lock might inspire ideas… :thinking:

3

I would use an inductive sensor from inside the door frame if that is possible. Just drill a hole in way that allows you to run a caple to your esp32 or whatever you use.
A word of caution in my opinion adjustable sensors a far less reliable than ones where the distance is fixed.

For more specific advice I would need a picture of what you are trying to built

4

Hi Spiro,

Exactly is this the plan. Drilling a sensor in the door and use a small switch. My question is. What device (brand & type) is preferred (battery powered) to connect to … Of course. Device will not be inside

Thanks

5

Hi ActioRed,

I don’t have a picture because I’m studying on it.

Drilling a sensor in the door and use a small switch. My question is. What device (brand & type) is preferred (battery powered) to connect to … Sensor might of course be at the outside

6

If you are using small switch, easiest way is probably to wire it to magnetic door/window sensor .
You just solder it to the reed switch contacts. You can remove the reed switch or leave it on place if it’s normally open model.
image

7

I can not give you specific advice on what brand and moddel to buy, i would recomend you to buy one that works on 315mhz or whatever is your local ISM frequency. Wifi would take to mutch power, if you want to run it from a battery

8

Not sure if you’re looking for something like this:
How I made my dumb locks a little smarter! - Share your Projects! - Home Assistant Community

The details might be a little dated, but the principle still works :smiley: