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Instructables Proximity-Sensing LEDs. Each "module" consists of a visible LED, an IR LED, a phototransistor and 3 resistors.

Proximity-Sensing LEDs

Instructables Proximity-Sensing LEDs. Each "module" consists of a visible LED, an IR LED, a phototransistor and 3 resistors.

Storage rack for beer growlers. My boyfriend would love this. Definitely a good birthday present for a beer lover!

Storage rack for beer growlers. My boyfriend would love this. Definitely a good birthday present for a beer lover!

Remote Control Light switch (ARDUINO)

Remote Control Light Switch (ARDUINO)

Light Switches,Arduino,Remote,Electrical Projects,Interesting Stuff

Biometric keyless locks let you unlock or lock your entry door with just a quick scan of your fingerprint— the perfect solution for anyone who loses keys or has kids.

Finger-Scan Entry Locks

Biometric keyless locks let you unlock or lock your entry door with just a quick scan of your fingerprint— the perfect solution for anyone who loses keys or has kids.

Infrared

Details about TCRT5000L TCRT5000 Reflective Optical Sensor Infrared IR Switch infrared

DIY Micro 5.8Ghz FPV - build it yourself wireless micro camera for under $100 and 3 grams!

DIY Micro 5.8Ghz FPV - build it yourself wireless micro camera for under $100 and 3 grams!

Raspberry Pi Lights: how to sync Christmas lights to midi audio | The Raspberry Pi and I

Raspberry Pi Lights: how to sync Christmas lights to midi audio | The Raspberry Pi and I

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