Introduction: Pizza Rat

About: Retired Math teacher who needs a hobby! So I tinker with stuff: Arduino, welding, my 1958 TR-3 , my tennis serve

After seeing the video of the pizza rat in NYC not so long ago, I thought I would make one . It ended up being a gift for my daughter and it used up an used piece of pizza.

I had a robotic car that used a Picaxe and a couple of motors that I no longer needed. So I repurposed them to make my pizza rat.

So all I needed were:

1. a Rat - I found on the internet for about 5.00

2. Picaxe 28 which I already had

3. Wheels and motors from previous project

4. battery holder

5. 4 double A batteries

6.An on/off switch

7. some misc wires

Step 1: Video of It in Action

Step 2: The Build

So using a small 6 inch piece of wood , I attached the battery holder to one side and the PIcaxe to the other. I attached the motors with double sided tape and then used a zip tie to further hold in place.

I hot glued the ends of 2 pieces of fairly rigid wire to the top of the wood and the other ends I secured to the bottom of the rat with hot glue and a couple of small screws.

I included a couple pieces of wire that are shaped like a C over the wheels. This keeps the pizza from resting on the wheels .

Step 3: The Electronics

Not much to this:

Power and Ground are attached as shown in photo. Likewise the motors are attached as shown.

Step 4: The Code

Below is the code I used.

When both wheels are turning , it tended to go in circles so I tried to compensate by stopping there faster wheel for a short time. There may be a better way to do this.

' 12/10/15

' idea: turn on and it will derag the pizza backwards '' wait 2 seconds to put the rat down pause 2000

main: ' the main loop

' back up both wheels turning ' low 5 : low 6 : high 4 : high 7

low 6 high 7 high 5 low 4

pause 1000

' adjust turning by stopping fast wheel

low 4 high 5 low 6 low 7 pause 600

goto main

Homemade Gifts Contest 2015

Participated in the
Homemade Gifts Contest 2015

Zip Tie Challenge

Participated in the
Zip Tie Challenge

Arduino All The Things! Contest

Participated in the
Arduino All The Things! Contest