PitBot Is Agressive? Well, No Worries!

Making PitBot bite! Lego Episode #25

In This episode, we’re gonna make PitBot Run after a yellow cup :|

It is heavily based on SparkFun code from Playing with your Pixy Pet!.

There, the SF’s guys use Arduino Leonardo and Zumo Robot from Pololu — The official Arduino Leonardo has been discontinued =/

In my implementation, I will use Arduino UNO Rev 3, DoRobot (Meet DoRobot — Assembly Techniques) and SparkFun Monster Moto Shield and Pixy Camera (oops I almost forgot:)

Let’s get it on!

How can you replicate it at your home?

First, Here’s the code:

[TODO: THE CODE GOES HERE]

The first thing you’re probably asking for is about the USB cable…Good question, though!

There is a need for another 5v battery. Although I have provided the PitBot with two batteries, one for Arduino (Li-ion 18650 7.4V 1500mAh battery with PCB/PCM and connector) and another for the two 12 Volts DC Motors (ZIPPY Compact 1000mAh 3S 35C Lipo Pack), Pixy needs a VCC power too...

That’s the next challenger! (Do you have an idea how to fix it?)

But for now, enjoy this implementation as it is. It took me a day to translate the Sparkfun’s code. There is room for improvements, though. That’s for sure!

Step-By-Step

1 Mount The $25 Bucks Chassis

Here you can follow my pretty neat tutorial about mounting DoRobot :)

Meet DoRobot — Assembly Techniques — J3C3-Caterpillar-Crawler-Chassis v1.0 — ArduSerie#46

2 Get acquainted with the SparkFun Monster Moto Shield’s novelties

VNH2SP30 — Monster Moto Shield — Use This Board In Extreme High-Demand Application — Full-Bridge Motor Drivers — 30A@16v peak — Ardu_Serie#63

3 Enjoy LEGO’s PID use with Pixy Camera and understand all the intricacies to make this cheap charmedlabs’ camera working with the not-so-really-inexpensive LEGO MINDSTORMS EV3 31313 Robot Kit :)

Lego Meets Pixy — How to Connect Your Inexpensive Camera Module to Lego — Episode #16

4 Make a debut about PID’s subject (if you already haven’t…); check out and make sure you can find PID’s issue comfortable enough

Lego PID — The Ultimate Line Follower — Algorithm for your EV3 PID Line Follower Robot — Episode#15

5 Make a sandwich — Provide all the connections, mainly with the power cords”/

6 Upload the code

[TODO: LINK TO THE GITHUB GOES HERE]

7 Go to Impress Your Friends ;)

Alright, thank you for reading this article. If you have some question, please feel free to send me a comment on the section below.

Bye for now!

Download All The Files For This Project

Credits & References

Playing with your Pixy Pet! by and from Sparkfun

Assembling the pan/tilt Mechanism by and from Pixy Documentation Wiki Page

Running the Pan/tilt Demo by and from Pixy Documentation Wiki Page

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