OTTO ESP32

An OTTO robot enhanced with ESP32 for Bluetooth remote control and a screen.

Humanoid
Open source
arduino
3D printable

Suggested by Robotheca, created by @txp666 (opens in a new tab), from github.com/txp666/OTTO_ESP32 (opens in a new tab). Pinned to commit b6ee68b (opens in a new tab).

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Hardware license: MIT (opens in a new tab)
Software license: MIT (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 (9 scripts, 1 program or installer)

This repository has no photo of the robot yet.

3D preview converted from github.com/txp666/OTTO_ESP32 at b6ee68b, under MIT. View the original files from GitHub (709 KB) (opens in a new tab)

What it can do

Written by Robotheca from the project's documents.

Walks on six legs
Plays animations without remote control
Has a 240x240 LCD screen for display
Uses ESP32 for Bluetooth control

Bill of materials

This repository has no parts list Robotheca can read yet.

Build guide

The guide appears here as you scroll.

Guide by @txp666 (README.md), under MIT. The English translation is by Robotheca, shared under the same license.

More guides

Wiring and electronics

Notes written by Robotheca from the project's documents.

Main parts

ESP32 SIP module
Six servo motors for legs
240x240 LCD screen
MicroSD card slot
CH340C USB-to-serial converter
XC6210B332MR 3.3V LDO regulator
MCP73831 linear charging controller
DET402 buzzer
Type-C USB connector
AO3400A N-MOS transistors
S8050 NPN transistors

Connections

ESP32 SIP connected to servos via 2.54mm 3-pin headers
LCD screen connected via SPI bus
MicroSD card connected via SPI bus
Buzzer connected to GPIO pins
Transistors used for motor control
Power regulated from 5V to 3.3V

Schematics, boards and diagrams

Project information

Difficulty: Intermediate
Estimated cost: Not stated
Buildability: 45/100Incomplete documentation
Parts: –
Tools: 3D printer, soldering iron

Buildability45/100

Incomplete documentation

How complete the published files are for rebuilding this robot, measured by Robotheca at commit b6ee68b. It isn't a rating of the robot.

3D and CAD files20/20
4 printable parts (STL, 3MF), 1 CAD source file.
Robot description0/15
No URDF.
Add a URDF: the robot can then be seen in 3D and tried in the browser.
Parts list0/20
No parts list in the repository or linked.
Most points to gain: Link to your parts list, or add it to the repository (a CSV or a Markdown table) with quantities, prices and where to buy each part.
Software15/15
Code in this repository, instructions to install or run it, built on arduino.
Documentation0/15
README of 472 characters with 0 pictures; 0 build steps.
Write a README of at least 1,500 characters: what the robot does and how to build it. Split the build into at least 3 steps. Show the robot and its assembly in pictures in the README.
Simulation0/5
No simulation files.
Add a simulation model (MuJoCo, Gazebo, Webots or Isaac).
Licenses10/10
Hardware: MIT; software: MIT.

Software

Framework: arduino
Languages: C, Arduino, Python, C++, Shell
License: MIT

The code

Firmware/Arduino, C, C++, Python, Shell · 1490 files

How to run it

Written by Robotheca from the project's documents.

Install PlatformIO plugin in VSCode
Open the Firmware folder in VSCode
Flash the ESP32 firmware using PlatformIO

Robotheca doesn't review code. Read it before running it.

Project files

Every file of the project: code, CAD, electronics, guides, at commit b6ee68b.

Community

Questions and improvements go to the creator's repository.

Photo and 3D model