Back to the Future Time Circuits

The goal of this project is to build my own personal replica of the DeLorean’s “Time Circuits”, as featured in the Back to the Future movie trilogy. I’ll need to build custom time circuit displays, a custom keypad for changing the date, and screen-accurate enclosures. To make everything function, I’ll need to design and program some embedded circuits to control it all.

Building a ‘Twitch Clips’ Button

Last spring before this blog was a thing, I created an “Oddshot Button” using a hacked Staples Easy Button. The button was simple – while watching a Twitch stream, a press of the button would instantly create a video clip of the last 30 seconds using the Oddshot service.

A few months later Twitch debuted their own ‘Twitch Clips’ service, and Oddshot has since fallen out of use. So I decided to remake this project to work with Twitch Clips!

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Arduino Uno NeoPixel Prototyping Board

While the final version of the footwell NeoPixel project calls for a long strip of ~60 pixels, most of my time is going to be split between programming at my desk and testing the pixels’ response to telemetry from the car.  I didn’t want to have to wrangle a large strip every time I wanted to test an idea, and I figured most of the patterns for the 60 pixel strip could be replicated on a shorter one.

My solution is this small prototyping board.  It’s a 3D printed part with mounts for an Arduino Uno, a small breadboard, and a NeoPixel stick.  The NeoPixel stick is a nifty PCB with 8 of the same type of RGBW leds as the strip I plan to use, and includes input/output pads and a resistor for the data line.  The breadboard lets me wire a 1000µF capacitor to protect the pixels from voltage spikes and allows me to hook up a second power supply if I’m reaching the power limits of the Arduino (which I should note is absolutely possible if you’re using all of the pixels at full brightness).

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