DoubiBot

A writing robot based on ESP8266 that can perform manual timekeeping, weather forecasting, and function as a general-purpose robotic arm.

Robot arm
No license: all rights reserved by the creator
arduino
3D printable

Suggested by Robotheca, created by @yuxijian (opens in a new tab), from github.com/yuxijian/DoubiBot (opens in a new tab). Pinned to commit 5e5d8ac (opens in a new tab).

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Hardware license: No license
Software license: No license
Commercial use: Unknown

No license is stated for part of this robot.

The creator chose the hardware and software licenses on Robotheca; the repository has no license file for them yet.

This repository has no photo of the robot yet.

3D model loaded from the original files on GitHub at 5e5d8ac, under NONE. View the original files from GitHub (42.5 MB) (opens in a new tab)

What it can do

Written by Robotheca from the project's documents.

Draws time and weather forecasts on a whiteboard
Operates as a general-purpose 3-axis robotic arm
Controlled via ESP8266 Wi-Fi interface

Bill of materials

This repository has no parts list Robotheca can read yet.

Build guide

The creator's steps, each with its instructions.

1Prepare materials and tools
2Assemble 3D printed parts
3Prepare and assemble acrylic laser-cut parts
4Solder PCB (or use NodeMcu ESP8266 board)
5Install servos and linkages
6Mount the whiteboard pen
7Upload Arduino firmware
8Calibrate and test the robotic arm

The creator's guide is written in Chinese. It has no license, so all rights stay with the creator: Robotheca doesn't show it here or translate it, and gives its own notes about the robot instead.

Read the creator's guide Ask the creator on GitHub

Wiring and electronics

Notes written by Robotheca from the project's documents.

Main parts

ESP8266 microcontroller board (NodeMcu)
Three 9g servo motors for arm movement
Whiteboard marker holder

Connections

Servo motors connected to ESP8266 GPIO pins
Power supplied to servos via ESP8266 5V pin

Schematics, boards and diagrams

Project information

Difficulty: Intermediate
Estimated cost: Not stated
Buildability: 30/100Incomplete documentation
Parts: –
Tools: 3D printer, soldering iron, laser cutter

Buildability30/100

Incomplete documentation

How complete the published files are for rebuilding this robot, measured by Robotheca at commit 5e5d8ac. It isn't a rating of the robot.

3D and CAD files10/20
2 printable parts (STL, 3MF).
Add the CAD source (STEP, or the CAD program's own files) so people can change the design.
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.
Documentation5/15
README of 415 characters with 0 pictures; 8 build steps.
Write a README of at least 1,500 characters: what the robot does and how to build it. 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).
Licenses0/10
Hardware: no license; software: no license.
Add a license for the hardware (e.g. CERN-OHL-S-2.0 or CC-BY-SA-4.0). Add a license for the software (e.g. MIT or Apache-2.0).

Software

Framework: arduino
Languages: C, C++, Arduino
License: NONE

The code

Arduino/Arduino, C, C++ · 7 files

How to run it

Written by Robotheca from the project's documents.

Install required Arduino libraries from the repository
Open the Arduino firmware project in the Arduino IDE
Select the correct board and port in the Arduino IDE
Upload the firmware to the ESP8266 board

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

Project files

Every file of the project: code, CAD, electronics, guides, at commit 5e5d8ac.

Community

Questions and improvements go to the creator's repository.

Photo and 3D model