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LogoBot

A cheap, extensible Arduino-based mobile robot with 3D-printed parts that can be programmed with a Logo interpreter.

  • Wheeled
  • Open source
  • arduino
  • 3D printable

Suggested by Robotheca, created by @swindonmakers (opens in a new tab), from github.com/swindonmakers/LogoBot (opens in a new tab). Pinned to commit 20b7c8b (opens in a new tab).

Fork on GitHub (opens in a new tab)Download the files at this commit (.zip)
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 (5 files marked executable, 16 scripts)

Photo and 3D model

LogoBot, photo from its repository
Photo:@swindonmakers (opens in a new tab)MITsource file (opens in a new tab)

3D preview converted from github.com/swindonmakers/LogoBot at 20b7c8b, under MIT. View the original files from GitHub (37.7 MB) (opens in a new tab)

What it can do

Written by Robotheca from the project's documents.

  • Mobile two-wheeled robot driven by two stepper motors with a caster at the rear, arranged like a traditional turtle bot.
  • Front and rear bumpers each with a pair of microswitches, usable as bump sensors or remapped to control behaviours.
  • An RGB LED for character and a piezo sounder for audio feedback.
  • Designed to be extensible; the Scribbler variant adds a pen lift servo and an ESP8266-01 WiFi module for remote control with a LOGO command set.
  • An IR Seeker variant adds a Sharp 2Y0A21 IR distance sensor on a servo-driven bracket.

Bill of materials

This repository has no parts list Robotheca can read yet.

Build guide

The guide appears here as you scroll.

Guide by @swindonmakers (README.md), under MIT.

More guides

Wiring and electronics

Notes written by Robotheca from the project's documents.

Main parts

  • Arduino Pro Mini microcontroller board.
  • 28YBJ48 stepper motors, two of them, driven by ULN2003 driver boards.
  • MicroSwitch microswitches for the bumpers.
  • 3mm LEDs and an RGB LED.
  • Piezo sounder.
  • AA battery pack of four AA cells with a SPST toggle power switch.
  • 2 Pole 20A terminal block for power distribution.
  • Optional: ESP8266-01 WiFi module, 9g micro servo for pen lift or IR sensor, Sharp 2Y0A21 IR sensor.

Connections

  • Arduino pins 2-5 connect to the left stepper driver and pins 6-9 to the right stepper driver, per the planned pin assignments.
  • Piezo sounder is on pin 10 and the RGB LED on pins 11-13.
  • Microswitches connect to analog pins A0-A3 for front left, front right, back left and back right.
  • Pins 0-1 are left spare for WiFi or Bluetooth UART; A4-A7 are spare analog pins.
  • Jumper wires run from the motor drivers to the Arduino; the terminal block distributes battery power to the stepper drivers and the Arduino.
  • The Arduino wiring diagram in the hardware images shows the pin connections.