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A longboard is converted to use a 150 Watt motor. But how to handle stress on previous 3D printed components?
While trying to cut the right shape, I realised that it would be much simpler and stronger at the same time to change the design and use a “slab” of strong Delrin plastic attached with 2 screws to the truck directly.
See all the build details and additional pictures in the blog post here.
Angela Sheehan posts on Twitter her new automated companion. Her purple robot is incredible. The electronics are based on the Adafruit Feather M0 with radio microcontroller board with NeoPixel lights and a capacitive touch sensor on the forehead. Servo motors flaps the wings and tilt the head.
Angela has programmed her companion to work with her color stealing fairy wand, developed previously with an Adafruit Flora color sensor. The detected color is sent over to the companion via radio.
My new best friend. Still working on her ‘skin’ of faux fur and shoulder harness. So happy with this creature! Built with an @adafruit Feather M0, Neopixels, 2 servos, and a generous amount of 3D printing pic.twitter.com/BBHa059iZP
— Angela Sheehan (@the_gella) January 14, 2020
See Angela’s Twitter Feed for the steps she has documented. Wonderful work!
The Buildlog.Net blog posts an interesting article on using Dynamixel 360 degree servos with an ESP32 microcontroller over UART. Then integrates use into the Grbl_ESP32 software for a 3 axis delta machine.
See the project video below and project details on the blog post.
A great project by Brian Obudho on all3dp.com goes through the build of an analog clock with a 3D printed case and special insides & software.
This DIY clock takes after grandma’s in a number of ways. For example, assuming you follow the instructions to the T, the case should be printed using wood and copper PLA. Apart from that, all of the inner workings are just like those found in grandma’s clock.
The digital insides consist of an Adafruit ESP32 Feather, a stepper motor, driver & battery.
The software is special: the clock corrects itself via software and an Internet connection to a NTP clock server!
At regular intervals, the software will poll the NTP clock server, and the time received – from the NTP server – is recorded in the ESP32 clock. Whenever it’s 12:00 (either noon or midnight) and the clock happens to be off for any reason, the software will fast-forward the hands to the 12 o’clock position, from which point the clock will resume its operation.
You can grab the 3D STL files via GitHub and go through the build on all3dp.com. Great work!
Via the MagPi and NASA’s Al Bencomo – this amazing robot, named FRILLER, changes the shape of its wheels to overcome obstacles.
The idea was inspired by the STAR robot from UC Berkeley and some of the research done at NASA/JPL, which includes prototypes of collapsible robots and robots with tails.
The first proof-of-concept trial had a tendon-like connector in order to tension the wedges in one state or the other. However, the latest version relies on interlocking sections, which can be 3D-printed without having to print support structures.
Some of the parts used:
All the 3D print STL files and code are open-source if you want to build your own: magpi.cc/pYSbeV.
See the MagPi magazine for more details!
