[TegwynTwmffat] recently got a job as a part-time bike courier and has come to realize just how dangerous it can be to mix leg-powered transportation with various sizes of engine-driven machinery. Some people would be content with a light, but why use a measly little bulb or two when you can have a giant, illuminated sign with a clear call to action? Because is there really any ceiling when it comes to safety precautions?
We think that 180 LEDs in a familiar formation oughta do it. An ultrasonic sensor detects cars behind the bike with the help of an Adafruit Feather. All those LEDs are controlled by a pair of L293 motor driver chips and a slide potentiometer for some dimming action. After all, they need to get enough juice to be visible in broad daylight, but also be dimmable so as not to blind people at night.
[TegwynTwmffat] calls this a simple project that is suitable for beginners. We think that is great, because bespoke safety measures should be accessible for everyone. So go get those Gerbers and make one for yourself! You can check it out in action on the back of a tricycle after the break.
Want a more relaxing ride? Recumbent is the reclined way to go.
The HackadayPrize2021 is Sponsored by:
Support the originator by clicking the read the rest link below.