On Halloween, some individuals can’t or don’t wish to open the door for numerous causes. Perhaps they’ve a cat that likes to flee each probability it will get, or perhaps their favourite TV present is on throughout prime trick-or-treating time. Regardless of the case, we predict it’s completely acceptable to depart a bowl of sweet exterior the door, particularly if there are electronics concerned.
On this case, the bowl detects trick-or-treaters and sweet eaters utilizing an LD2410 60 GHz radar sensor and an RP2040. A light-weight pipe reveals orange when an individual is detected, and switches over to inexperienced as they arrive nearer, as if to say you might have sweet now.
Nothing occurs after that, however now that we give it some thought, it could be cool so as to add an MP3 decoder and a speaker to play slightly witch cackle or one thing as soon as they’ve had an opportunity to stay their hand within the bucket.
[Mike Kushnerik] really designed the PCB just a few months in the past for non-Halloween functions: some residence automation initiatives. However then they had been making an attempt to consider one thing for Halloween, and this pleasant light-up bucket got here to thoughts. Along with the RP2040 chip, there’s a 128 MB flash chip, a WS2812 LED, and a header for speaking with the radar sensor over UART. Make sure to try the temporary demo video after the break.
When you’d like to face exterior and provides out sweet, a minimum of ship it down a light-up slide or one thing.