Turn on music as soon as you walk into a room! This tutorial covers a minimalistic entrance sensor that triggers music of your choice. The design can easily be adapted to suit a variety of needs (e.g. alarm system, motion-triggered lights, etc.).
The system is controlled by a Raspberry Pi, and aside from the RPi and speakers, the materials cost is extremely low (~ $20). Build time is approximately 1 – 2 hours.
For an inexpensive set of speakers, check thrift stores and/or friends’ garages.
Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
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