BurgerBot V2 - Quick on the Draw

Add a Sharpie to Burgerbot and learn how to draw with a robot!

22 September 2022 by Kevin McAleer


Table of Contents


Videos

There are a couple of videos covering the features, demo and build process for BurgerBot, as well as the original BurgerBot and why I created it.


What’s new, in version 2

There are a bunch of new features in this release:


Quick on the Draw

BurgerBot now has the ability to draw, with the addition of a new mechanism.

The Pen mechanism is designed to comfortably hold a Sharpie pen. There is small hole in the pen holder to enable an M2 screw to be inserted and tightend up against the pen to provide a secure grip. Just make sure you put the lid back on the Sharpie after use so it doesn’t dry up.

Pen Wireframe

The pen is at the very center of the robot, between the wheels which makes drawing shapes and patterns very easy as its the origin point of the robot.


Battery Holder

We love the Galleon Battery from Pimoroni; it’s a hardcase, 400mAh LiPo battery, with a convienient JST-PH connector.

The battery is now located in the rear support section, back to back with the Raspberry Pi Pico W.

Battery Holder CAD image Battery photo


Pico holder

The rear support also has mounting points for the Pico W, with holes for 4 M2 screws. There is also a small channel for the Battery wire to route from the other side.

Pico Holder

Moving the Pico W from the top of the board to inside makes room for the new Pen mechanism.

Here is a photo of the Pico W, Pico Lipo Shim and Pico Motor Pack assembly, with the Galleon battery JST-PH connector visible.

Pico Holder


Access Point mode

You can now connect to BurgerBot using Wifi via access point mode. This means you can remotely control the robot using a mobile phone, tablet or laptop simply by connecting to the wifi hot spot provided by BurgerBot.

When you connect to the wifi hot spot your browser will be redirected to the interally hosted web page, where you can control the robot.


New Look

The front of BurgerBot now has an inset providing a fresh, clean new look. The wheels are also of the new, slimmer design, making for a more compact robot.


One of the very first programmable robots for education used a language called Logo to issue movement commands. Logo also had a PenUp() and PenDown() command to raise and lower a pen. Taking inspration from this, BurgerBot will also support some Logo commands 1


Parts

Below is a list of parts with links - if you do some research you may be able to find the parts much cheaper.

Part Description Qty Price
Ultrasonic Range Finder Measures distance using sound waves 1 £6.90
Motor SHIM for Pico drives the motors 1 £9.60
LiPo SHIM for Pico powers the robot via a LiPo battery 1 £7.5
Micro Metal Motors moves the robot around 2 £5.46
Moon Buggy Tyres provide grip and traction 1 £4.50
Galleon Battery 400mah hardcase LiPo Battery 1 £7.50
SG90 Servo moves the pen up and down 1 £1.99
M2 & M3 Nuts and bolts For securing the parts together 14x M3, 6x M2 Various
    Total £48.81

STL Files

If you want to print out your own Burgerbot V2, download the files below:


Notes

  1. Coming soon 

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