G+_James Mitchell Posted July 19, 2017 Share Posted July 19, 2017 Planning stage of a project: Problem: My 2.5 yr old is climbing out of bed and exploring the house at night My Solution: An multiple (3-4) IR door frame using an Arduino, pezo buzzer, a few LEDs Issue: The ir sets that adafruit offer can't reach 33in. https://www.adafruit.com/product/2168 Question: Can't I tear apart an old remote or two and use the emitter? If so, what could I use for the receiver? https://www.adafruit.com/product/2168 Link to comment Share on other sites More sharing options...
G+_Jason Perry Posted July 19, 2017 Share Posted July 19, 2017 I would be tempted to test it out anyway. Have you thought of using a reed switch? Link to comment Share on other sites More sharing options...
G+_James Mitchell Posted July 19, 2017 Author Share Posted July 19, 2017 Thinking of IR and photo sensors at this point due to the adafruit limitations Link to comment Share on other sites More sharing options...
G+_Jason Perry Posted July 19, 2017 Share Posted July 19, 2017 Laser pointer and a photo sensor ?? then your 2.5year old can play James Bond Link to comment Share on other sites More sharing options...
G+_James Mitchell Posted July 19, 2017 Author Share Posted July 19, 2017 That's plan "C", and yes can already see my child with a can of mommy's hair spray trying to find the widest gap Link to comment Share on other sites More sharing options...
G+_Jason Perry Posted July 19, 2017 Share Posted July 19, 2017 Throw a few stepper motors into the mix and make it real fun. Link to comment Share on other sites More sharing options...
G+_Ian Shmuckler Posted July 19, 2017 Share Posted July 19, 2017 This guy used an IR from an old remote control and use a TSOP1838 as a receiver and made a link of over 30ft. Check it out. pcbheaven.com - Long Range (10mt) IR Beam Break Detector Link to comment Share on other sites More sharing options...
G+_Ben Reese Posted July 19, 2017 Share Posted July 19, 2017 Jason Perry only of those steppers are connected to Nerf guns. Link to comment Share on other sites More sharing options...
G+_Ben Reese Posted July 19, 2017 Share Posted July 19, 2017 Just a thought... Ultrasonic range sensors might work well too. They should reach the length of a doorway easy enough. Gowoops 5PCS HC-SR04 Ultrasonic Module Distance Measuring Transducer Sensor for Arduino https://www.amazon.com/dp/B00UJA1TAQ/ Link to comment Share on other sites More sharing options...
G+_James Mitchell Posted July 19, 2017 Author Share Posted July 19, 2017 Nice idea 2 on each side of the door, different levels... I'm still thinking of hacking a few old remotes stealing the ir LEDs. That way I supply just power to one side of the doorway and photo resistors ran in series, that way it doesn't matter where the beam is broken or how many IR/photo pairs are used. And that would make the code super simple. Does anyone forsee a problem? Link to comment Share on other sites More sharing options...
G+_Jason Perry Posted July 19, 2017 Share Posted July 19, 2017 If you are after simple and straightforward, what about putting 2 contacts on the door frame and a piece of metal on the door. Door open circuit open, door closed circuit closed. Link to comment Share on other sites More sharing options...
G+_Jason Perry Posted July 19, 2017 Share Posted July 19, 2017 Ben Reese?, can we use openCV to identify the target and aim? Link to comment Share on other sites More sharing options...
G+_Ben Reese Posted July 19, 2017 Share Posted July 19, 2017 Jason Perry Sounds great to me! James Mitchell is probably going to need to upgrade from an Arduino to a Raspberry Pi. Link to comment Share on other sites More sharing options...
G+_Black Merc Posted July 19, 2017 Share Posted July 19, 2017 Ben Reese? placed one ultrasonic atop doorway to detect height(mom nor Dad will set it off) Link to comment Share on other sites More sharing options...
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