Category Archives: sensors

Simple garage door open signal

I like this project mostly cause the light indicator is built into the light switch panel, hiding the electronics.  Now I don’t think I would include the buzzer, that would just be too annoying.http://www.youtube.com/watch?v=mZqPcMN7284 http://www.instructables.com/id/Smart-Garage-Door-Open-Indicator/

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Text messaging sump pump alert

I like this solution, thought I am not so sure I would dedicate a RPi to it.  The author basically uses a 9-volt battery connector to test if the water has gone up too high (it shorts the connection).  And … Continue reading

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Interesting wireless Proximity Sensor

Interesting prox sensor build.  It uses an atiny, prox sensor, and RFM12B RF transmitter for the build.  The article figures the cost for each one to be around $15.  How I don’t know (atiny board $10, transmitter $5, sensor $3, … Continue reading

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Heat Gun + arduino + 2 motors = Thermal Imaging Camera

Looks like for $100 in parts the author build a thermal imaging camera.  Its slow since it has too scan each x/y area, but it does the job. http://hackaday.com/2013/12/01/diy-thermal-imaging-camera/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+hackaday%2FLgoM+%28Hack+a+Day%29 http://www.eevblog.com/forum/projects/diy-scanning-thermal-camera/

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Nuts, I sponsored another kickstarter like project

Its a bluetooth arduino for 20-25 dollars with low power consumption.  It sounds promising. and for the cheap price (cheaper than some arduino bluetooth shields) its worth a shot.  Oh its more of an ATiny though. https://launch.punchthrough.com/

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DIY Laser Tripwire Alarm

Interesting build.  I don’t think I would do it (seems like it would be pretty costly). http://makezine.com/video/diy-hacks-how-tos-laser-tripwire-alarm/?utm_source=feedburner&utm_medium=%24{feed}&utm_campaign=Feed%3A+%24{makezineonline}+%28%24{MAKE}%29&utm_content=%24{GoogleReader}

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build a dog repellent for your couch

Good write-up on basically building an alarm for furniture to keep dogs off of it via noise (or vibrate at night).  The author uses a Picaxe for the processor, but this could be easily adapted to arduino. http://www.instructables.com/id/Dog-get-off-the-couch/

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Build your own dust til dawn sensor

Its a pretty simple circuit.  worth reading if you want to try an automate some remote Halloween decorations. http://www.instructables.com/id/Wiring-a-Dusk-to-Dawn-Photocell-Sensor/

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Use a Motion Sensor to Automate Your Haunted House

Interesting hack where the author wires in a motion sensor into a powerline. http://www.instructables.com/id/Use-a-Motion-Sensor-to-Automate-Your-Haunted-House/

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Nice portable radiation detector

Nice build that is robust and standalone for a radiation detector. http://theiopage.blogspot.ca/2013/01/solar-powered-wireless-autonomous.html

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