3D Printed Robot Arm - Part 3

Опубликовано: 02 Июнь 2026
на канале: John Lauer
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This Part 3 video walks you through the latest design of my 3D printed robot arm actuator. The ESP32 is used as the brains of each robot arm actuator and in the video you'll see why. It has a new custom main PCB and touch PCB. Lots of custom Lua code was written for it to obtain the functionality seen in the video including homing, jogging, step generation, acceleration, deceleration, Gcode queue, temperature sensing, fan speed control based on temperature, pulse counting, and WS2812B LED driving.

Part 1 -    • 3D Printed Robot Arm  
Part 2 -    • 3D Printed Robot Arm - Part 2  

Further information can be found on the Github repo for this project at https://github.com/chilipeppr/robot-a...

This repository contains the latest design for the small actuator including:

PCB schematic and board file (Eagle)
Bill of Materials
Fusion 360 files - https://gallery.autodesk.com/projects...
STL files for 3D printing
NodeMCU ESP32 for Lua firmware with touch module, pulse counter module, RMT TX module, and gpiomatrix module.
Lua code for actuator
Link to ChiliPeppr http://chilipeppr.com/arm workspace to control the actuator and to ChiliPeppr ESP32 for Lua workspace for uploading code to the ESP32 device http://chilipeppr.com/esp32
Heat management test results

This actuator is based on the amazing design of Jeff Kerr's (LoboCNC on Thingiverse) 3D printed robot arm WE-R2.4 six axis robot arm. https://www.thingiverse.com/thing:332...