In case you’re searching for a last-minute Halloween wearable to impress your pals, you have to try this superior Remy, from the film “Ratatouille”, created by engineer, maker, and developer Christina Ernst aka shebuildsrobots over on Instagram. Utilizing an Adafruit Metro Mini, this little robotic rat could be worn in your head and seems to manage your each motion by tugging at your hair. That stated, we expect it might be simply recreated utilizing a Raspberry Pi Pico with a bit tweak to the code.
The Remy figure was designed by Ernst and is made to be 3D printed. The hole design makes it light-weight, and simple to mount to a hidden headband in order that it may be perched proper on high of your head, identical to the film. Remy’s arms have holes on your hair to go by means of and are moveable due to a few passion servos.
Since that is meant to be worn in your head, kind issue is a vital consideration. Ernst opted to make use of two sub micro servos to manage the arms as they are much smaller and lighter than common servos. You would improve them to full sized servos however some modification to the physique could be essential to make them match.
In accordance with Ernst, Remy’s arms are connected to the sub micro servos by sizzling gluing floral wire to them by means of one of many servo arm holes. She additionally added larger loops round his arms to suit extra hair. The arms are programmed to maneuver randomly as a substitute of on a hard and fast loop. However Ernst additionally provided code for utilizing an accelerometer related to Adafruit Metro Mini as a method of enter. The Adafruit Metro Mini is an Arduino appropriate board with an ATmega328 CPU working at 16 MHz. You would use different boards as a replacement like a Raspberry Pi Pico or the brand new Raspberry Pi Pico 2. The accelerometer is an MPU6050 which makes use of I2C for communication. It solely controls Remy’s proper arm, however a further sensor, or some intelligent math may see each of Remy’s arms being gesture managed. Nevertheless, the random motion could be a better and convincing means to have Remy management your culinary duties. You should use any budget 3D printer to breed the physique however Ernst occurred to make use of an Elegoo Neptune 4 Pro—a printer we gave a glowing 4.5/5 star review to.
Ernst was variety sufficient to make this challenge completely open supply for private use so you can also make it your self at residence. She’s supplied all the STL information it’s essential print together with all the supply code she created to carry Remy to life over at GitHub.
If you wish to see this Raspberry Pi project in motion, you may test it out over at Instagram and browse extra particulars about its building on the GitHub hyperlink talked about above.