Jake The Junkbot

Made by 8BitsAndAByte

About the project

A DIY robot made out of junk laying around the house.

Project info



Estimated time:

1 week


22nd October 2018

Items used in this project

Hardware components

Paint, Tape, Glue, Screws, Wood, ... x 1
Pimoroni Four Letter pHAT for RasPi Zero x 1
Grove - Mini Track Ball x 1
DC MOTOR click x 2
Tiny Breadboard x 1
Vkey Voltage Keypad Voltage Keypad x 1
8xAA Battery Holder x 1
Battery Holder - 4xAA Square x 1
Tiny Breadboard x 1
Powerbank x 1
12-Channel 16-Bit PWM LED Driver x 1
Mini External USB Stereo Speaker x 1
Bracket (Pair) Terminal Bracket L9 x 3
USB Hub x 3
Servo Mount - Servo Plate B x 3
Raspberry Pi 3 Model B x 1

Hand tools and fabrication machines

Hot glue gun (generic) x 1
Soldering iron (generic) x 1
Dremel 4300 x 1



Below a quick overview of the content.

  • Introduction and showcase video
  • Tracks
  • Body
  • Head
  • Arms
  • Controlled destruction
  • Wiring
  • Control

Introduction & showcase video

For Halloween I've decided to build a robot using only junk laying around the house, a bit like Frankenstein, but with a robot.

Showcase video


Let's take a closer look. Starting from the bottom, we have the tracks allowing Jake to move around. You can see the two DC motors in the bottom and the two axis in the front. The tracks connect both gears to create his tracks. It's all mounted to the body with some pieces of scrap wood, screws, rope and a lot of hot glue.


The body is an old metal trashcan painted two different kinds of silver, some safety tape and fridge magnet letters. All glued in place for extra strength.


His head is an old box, with some styrofoam eyes, a beard with mustache and a speaker for yelling. As a nice bonus, he can open his head up for extra storage! After cutting a hole in the trashcans lid we can fit a servo attaching it to the box so he can move his head.


His arms are two spoons, attached with two servos, mounted the same way as the head servo (cut hole, mount bracket, add servo).

Controlled destruction

To give Jake the worn down look, I've used a hammer, paint, a pellet gun, a lighter and many more. I've followed roughly the steps outlined here. It's a lot of fun!


All the electronics are in his chest, in a box, mounted with two screws. See below for wiring schematics (crude).

1 = Powerbankπ = Raspberry Pi

c = 16-Channel 12-bit PWM/Servo Driver 2 = 4xAA Battery holderH = Head servoLA = Left arm ServoRA = Right arm servoSpeakerKeypadR = RelayLT = Left trackRT = Right track3 = 12 v Battery pack


Jake is controlled by this keypad, you can find all the code in the attachments.


A happy family picture to wish you a happy Halloween!

Happy Halloween!


Crude Schematics

A nice drawing of all the components


Jake code

The code running on Jake



We’re Dane & Nicole, two makers that create tremendously terrible tech, which we happily share with you on our channel!

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