Small 4 Axis Stepper Robot Arm
A Raspberry Pi & Arduino robot arm I made a few days ago. I used very cheap 28BYJ-48 stepper motors. You can find them for a few dollars on amazon. This project felt like a proof of concept. I wanted to proof to myself that it is possible to make a stepper robot arm with very cheap components. At this point in time, the robot arm isn't able to do anything interesting. A teach function is probably the next thing I will add to it. And some kind of gripper. It really needs a gripper!
Here's a blog post about this project:
https://electrondust.com/2018/01/21/s...
Here are some other things I used on the robot arm:
A Arduino Mega (This runs a fork of the superb grbl stepper controller software)
A4988 (The stepper drivers)
A Raspberry Pi 3 (The replica arm is connected to this. The Raspberry Pi send Gcode to the Arduino via serial)
Here's the code I used on the Raspberry Pi:
https://github.com/T-Kuhn/StepperRobo...
The Pi controls an Arduino Mega running a grbl fork with 4 axis stepper support. Here's the fork:
https://github.com/dguerizec/grbl-Meg...