The result is a 3D printable robotic arm with far greater torque and accuracy than would otherwise be possible. What’s more, Jochen spent four months refining Walter’s software, making the full stack including trajectory planning to achieve a smooth speed profile; Walter in action looks amazing.
Jochem cites the Thor project by from Ángel Larrañaga Muro as a source of inspiration. You can find out more about the Walter robot arm here.
Most DIY robots use servos for convenience since the encoder is already built-in and they are easy to control. The problem is that when it comes to higher torque the connection of the servo with the actuator becomes difficult to maintain with 3D printed material. If the servo or the flange moves just a little bit within the housing, the according play magnifies to a significant amount at the end of the actuator. Unfortunately, the required precision to avoid this is way above hobby grade components.
8-6-2021 (August 6, 2021) is the Snakiest day of the year and it’s also this year’s CircuitPython Day! The day highlights all things CircuitPython and Python on Hardware. See you there!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.