tiefpunkt / petrobot

A small robot to teach kids and others about robots, microcontrollers, programming and making in general

Pet Robot

A tiny Arduino-compatible robot platform. Inspired by the Pop Pet Robot.

PopPet Robot

The PopPet robot was a kickstarter in 2014. It was successful, and the designs were open sourced. And then it sort of died. The website is down, the Facebook page gone, and the twitter account has gone pretty much silent.

• Original design
• Kickstarter
• Website (Backup on archive.org)
• Twitter

Materials

• the body and wheels are lasercut out of 3mm MDF
• motors are these quasi-standard cheap beginner robotics motors, available e.g. at HobbyKing
• there's an omni-wheel caster in the back, which is probably the same as this one
  • I'd like to replace it with a smaller one to also make the front wheels a bit smaller. This one might be an option.
• Arduino
• Motor Shield: https://www.adafruit.com/product/81
  • The Adafruit v1 Motor Shield is not produced by Adafruit anymore, but there are clones of it available from China. They are much cheaper than any other motor shield available, but work well enough for our purpose.
  • Documentation
  • Schematic
  • More information on the shield

Firmware

Libraries

• Adafruit Motor Shield
  • Relevent documentation part for controlling DC motors
• NewPing

Notes

• Font for the wheels: Phat Phreddy

petrobot's Issues

Electronics?

What should be the robot's brain?

Some options:

• Arduino Uno + motor shield
  • L293D motor shield
• NodeMCU with motor shield
• WeMos Mini with its I2C motor shield
• DAGU Arduino compatible motor controller (used on the original Pop Pet)
• Pololu Baby Orangutan
• nRF5 BLE + Motor shield
  • Setup in Arduino IDE
  • Boards on AliExpress

Motors

Where to buy motors?

• https://nodna.de/200-1-Plastic-Gearmotor-90-Output
• https://hobbyking.com/de_de/geared-motor-w-90-deg-shaft-2pcs-bag.html
• AliExpress?

Multilang. documentation

• https://github.com/drallgood/jekyll-multilingual
• github/pages-gem#401
• https://github.com/octopress/multilingual
• https://www.sylvaindurand.org/making-jekyll-multilingual/
• http://www.klaasnotfound.com/2017/02/16/proper-multilingual-site-with-github-pages-and-jekyll/