Matthew Borgatti has built an air-powered, 3D-printed robot tentacle that waves in a friendly fashion and lends a helping hand. It is in no way erotic. Nuh-uh, not at all.
So, with a very nice looking tentacle in hand, it was time to start experimenting with robotic air control. I believe I’ve found a system that works in a pretty simple and straightforward way. It still needs some work when it comes to the programming end, but I think the mechanics are well sorted. The idea is to pulse air into the tentacle using a solenoid valve, and have a constant bleed on the line so that flex will entirely be controlled by how long the valve stays on. It’s sort of a low frequency PWM. I’d like to get this working using a visual interface in Processing but, given how little I program, progress has been slow. I’ve got a thread on Adafruit with what I’ve come up with. In the meanwhile, you might like to check a rough video of the trefoil inflating.
Print Your Own Robot: Part 6
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Every 90 minutes, the office phones of all five FCC Commissioners rings and John Oliver's voice comes out of it, demanding that they take action on robocalls, reversing FCC Chairman (and former Verizon exec) Ajit Pai's policy of relying on carriers to self-police their anti-robocall measures, and heading off his plan to gut the existing, […]
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