Idea: having the screen wake up/sleep based on ultrasonic sensor

[danielccm]

I've got a SR04 ultrasonic sensor.. I could try the code if someone does it....

The idea would be, have the screen off except if it senses someone in front?

[kurtdb]

It should be possible, but it would be more of a OS-hack than a NodeJS hack, I believe.

Also make sure you test if it works through the mirror glass.

[evancohen]

Since this requires additional hardware to function we may not want to add it. I don't think we want the mirror to be prohibitively expensive or tricky to get working.

That said I think this is a great idea. You should take a crack at it. If it ends up being super simple or optionally can run independently from the mirror then I'd be happy to merge it in.

[danielccm]

Hey Evan!

For the cost or difficulty, I doubt it'll be too much... it's just a small piece which logic tells me should be attachable to the I/O ports of the raspberry... just a breadboard and some resistors needed... nothing too expensive...

I'd be happy to "take a crack at it"... The problem I see is that as of right now, I don't know how to code! Last time I coded something was back in the 90's in C++......

If you or someone here could help update me.... lol!

UPDATE:

I found this:

http://www.modmypi.com/blog/hc-sr04-ultrasonic-range-sensor-on-the-raspberry-pi http://thejackalofjavascript.com/rpi-an-ultrasonic-sensor-measure-distances/

Might be useful?

[capfirepants]

@danielccm I'm actually in the process of adding the HC-SR501 to the code somehow... Sadly I'm not all to good with Nodejs/Js myself and it's hasn't arrived yet but i'll give it a shot as soon as it has. Some code for the SR501 already exists for node, so I don't think implementing it should be too hard. https://www.adafruit.com/products/189

[danielccm]

I've got a SR04 sensor laying around at home.. I could test it out for you!

[greghesp]

You could use an IR sensor and use onoff to interact with the ports: https://www.npmjs.com/package/onoff

[caolanxyz]

you could attempt to set it that when you're not in front of the ultrasonic sensor it activates a screensaver

[cxcornel]

If PIR sensor is used, the mirror can also have something like "Alarm Mode". When the mirror is set into this mode, it would take a picture and notify "admin" every time it detects presence in front of it.

[justbill2020]

326

[justbill2020]

Migrated to http://feathub.com/evancohen/smart-mirror/+12

Issue will be closed and tracked on feathub moving forward. Please refer to feathub for all future comments on this suggestion.