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ElectronBot

A mini desktop robot with 6 degrees of freedom, USB communication, and a display screen, inspired by WALL-E's EVE.

  • Humanoid
  • Open source
  • 3D printable

Suggested by Robotheca, created by @peng-zhihui (opens in a new tab), from github.com/peng-zhihui/ElectronBot (opens in a new tab). Pinned to commit 8199270 (opens in a new tab).

Fork on GitHub (opens in a new tab)Download the files at this commit (.zip)
Hardware license
GPL-3.0-only (opens in a new tab)
Software license
GPL-3.0-only (opens in a new tab)
Commercial use
Allowed

This repository contains executable files that Robotheca doesn't check. Only run them if you trust the creator.

Which files (71 programs or installers, 2 firmware images)

Photo and 3D model

ElectronBot, photo from its repository
Photo:@peng-zhihui (opens in a new tab)GPL-3.0-onlysource file (opens in a new tab)

3D preview converted from github.com/peng-zhihui/ElectronBot at 8199270, under GPL-3.0-only. View the original files from GitHub (33.9 MB) (opens in a new tab)

Degrees of freedom
6

What it can do

Written by Robotheca from the project's documents.

  • 6 degrees of freedom arm and head movement (roll, pitch, neck, waist)
  • USB communication with host computer
  • Display screen on head for video and images
  • Hand gesture sensing
  • Voice recognition in voice version
  • Camera input via USB
  • Custom USB-CDC device protocol
  • PID closed-loop control for servos

Bill of materials

This repository has no parts list Robotheca can read yet.

Build guide

The creator's steps, each with its instructions.

  1. 1Prepare 3D printed parts
  2. 2Assemble structural components
  3. 3Install bearings and special screws
  4. 4Prepare and modify servos
  5. 5Assemble and wire electronics
  6. 6Flash firmware to control boards
  7. 7Install and configure software SDK
  8. 8Calibrate servos and test functionality
  9. 9Install face display and camera
  10. 10Final assembly and testing

The guide appears here as you scroll.

Guide by @peng-zhihui (enREADME.md), under GPL-3.0-only.

More guides

Wiring and electronics

Notes written by Robotheca from the project's documents.

Main parts

  • Main control board: STM32F405RGT6 microcontroller
  • Servo drive board: FM116B driver chip, ADC for servo potentiometer feedback
  • Servo drive debug board: same as servo drive board but with connector for debugging
  • Base connector board: USB Type-C socket with 8-pin FFC cable interface
  • GC9A01 circular display screen
  • USB3300 USB-HS PHY chip
  • Modified RC servos with potentiometer feedback
  • USB camera connected to sensor board

Connections

  • Main control board to sensor board via I2C bus
  • Sensor board to servo drive boards via I2C bus
  • Sensor board to base connector via 8-pin FFC cable
  • Servo drive boards to modified servos via motor and feedback wiring
  • USB-HUB chip on sensor board connects to USB camera, base connector, and host computer
  • Servo drive boards use ADC to read servo potentiometer voltage for angle feedback

Schematics, boards and diagrams