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Build a circuit that triggers a loud screeching sound and emits bright red flashing lights when someone enters an open doorway.
Using a PNP transistor for circuit explanation and we wanted to create an easy, interesting circuit to experiment with.
The idea of measuring distance is done via using a laser, by pulsing the laser and timing the return of the light back to a light detector.
When thinking about all the components we sell, creating a spooky Halloween prop that resembles a cat with movable bat-like wings and emits a screaming sound, seemed like a good idea.
In 2020, FIRST teamed up with Disney and Lucasfilm as part of the Star Wars: Force for Change initiative – FIRST RISE with an “Infinite Recharge” game theme.
It was December 23, 1947 when the first Transistor was made functional by John Bardeen and Walter Brattain—William Shockley was their boss.
The fun begins on Saturday watching the autonomous vehicle’s find their way around the course where they will have to navigate past obstacles and try to finish without CRASHING into a hay bale!!
The answer – the Raspberry Pi Zero W (W = WiFi on board) coupled with Pimoroni’s Scroll Bot hat which displays a 7 x 17 row of white LEDs. BTW, if you have never used a Raspberry Pi, there are a few things you will need to set up first before being able to proceed to play with it. First there is a general guide to getting started with the Raspberry PI. Also, another good article is “10 Things to Know Before Starting a Raspberry Pi Project”.
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