3D Printed Robot Arm - Part 2

This is part 2 of my 3D printed robot arm. You can watch part 1 at    • 3D Printed Robot Arm   in case you missed it. For the data below, it is now mostly obsolete. You should use the info in Part 3. The CAD design of the extended wrist cap with the electronics inside is available at https://gallery.autodesk.com/fusion36... The PCB Eagle Board design is available at https://github.com/chilipeppr/robot-a... as well as the Lua code that I used to test the actuators in this video. The NodeMCU.bin firmware is there too. This has the latest release of the firmware plus the stepper library built in. Just flash NodeMCU.bin via esptool to your ESP32 board. The ChiliPeppr ESP32 for Lua Workspace was used to program the board and is available at http://chilipeppr.com/esp32 Video on how to use the ESP32 for Lua workspace to upload firmware and Lua code on your ESP32.    • Tutorial Programming Your ESP32 from Chili...   Jeff Kerr's (LoboCNC) original 3D printed robot arm design is on Printables: https://www.printables.com/model/1322... or Thingiverse: https://www.thingiverse.com/thing:332... PCB Components ESP32 Wemos $8 (Many ESP32 devices are cheaper, but this is the smallest size broadly available to fit inside the small actuators) https://www.aliexpress.com/item/ESP32... DRV8825 Stepper Board $0.95 https://www.aliexpress.com/item/5pcs-... DC to DC Converter $0.90 (Pick the 5V version, not 3.3V) https://www.aliexpress.com/item/DC-DC... WS2812B LED $0.15 per (Choose white and WS2812B) https://www.aliexpress.com/item/10-10... Slide Switch $0.29 for 20 pieces https://www.aliexpress.com/item/20Pcs... Screw Terminal https://www.aliexpress.com/item/20-pc... 26AWG Silicone Ultra Flexible Wire for 24v (Use 2 of the 4 wires) https://www.aliexpress.com/item/2metr...