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johnowhitaker

Programmer, general tinkerer, student, musician and general nerd :D

Harare, Zimbabwe
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244 Followers
65 Following
18 Projects
217 Likes
johnowhitaker
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This user joined on 03/11/2014.

Proud member of

UCT Maker Society
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Melting toner (as etch resist) directly onto copper clad board using a laser moved by a DVD drive XY system.
Project Owner Contributor

Mini PCB printer

johnowhitakerjohnowhitaker

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Tiny laser cutter built out of broken DVD drive parts. NOT A PRIZE ENTRY - PLEASE IGNORE!
Project Owner Contributor

Mini Laser Cutter

johnowhitakerjohnowhitaker

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Using electrical impedance tomography to scan body parts in high resolution by scanning with a e-waste axis system. NOT A PRIZE ENTRY
Project Owner Contributor

Scanning EIT Imaging System (SEITIS)

johnowhitakerjohnowhitaker

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Shelved this one to work on other things - kept for sentimental reasons
Project Owner Contributor

Kwese - musical instrument

johnowhitakerjohnowhitaker

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Using cheap IR LEDs and phototransistors to understand tomography. Using machine learning to make inferences based on sensor data. Etc :)
Project Owner Contributor

CIRTS - Configurable Infra-Red Tomography systems

johnowhitakerjohnowhitaker

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Using recycled materials to grow food effectively, and at very low cost.
Project Owner Contributor

Urban gardening on the cheap

johnowhitakerjohnowhitaker

View all 18 projects

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lol travelling salesman problem
Project Owner Contributor

Travelling Hacker Box

benchoffBenchoff

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Hackaday Europe SuperCon // Belgrade, Serbia // April 9 2016
Project Owner Contributor

Hackaday | Belgrade

aleksandar-bradicAleksandar Bradic

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TODO: recreate using 555
Project Owner Contributor

Hackaday.bash.org

aryaArya

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Join this project to talk about robots!
Project Owner Contributor

Robotics Chat

dehipudeʃhipu

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DVD-laser-etcher, dremmel-router, possibly a 3D printer? Who knows!
Project Owner Contributor

CD/DVD mechanisms and cartesian thinggie[s?]

eric-hertzEric Hertz

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Join this project to contribute to the story
Project Owner Contributor

A sci-fi adventure by hackaday.io

shlonkinshlonkin

Things I've Built

ATX Bench Power Supply

A nice power supply made from an old PC PSU. One of the most used projects I've ever made.

Cellphone Macro Lens

Not sure if this counts as a project - all I did was attach a lens from a dvd player to my phones camera to use as a microscope in some research I was doing :)

IR Webcam

A webcam which I converted to see in the near infra-red spectrum. Coke looks transparent, banknotes reveal hidden patterns and most importantly IR laser diodes are visible, which allows me to test them without destroying my eyes.

Miscellaneous high voltage shennanigans

Mini tesla coils, VDGs, flyback transformers, various other ways of electrocuting myself... Almost none of them documented or photographed :P

Laptop-in-a-briefcase

I repaired a broken old laptop and then decided to give it a second life by flipping the screen and mounting it in a briefcase as a portable display.

Multi-touch table

A multi-touch surface using my IR webcam and the CCV software. Running some simple pyMT demo apps at the moment. Only hardware aside from the camera was a cardboard box, a sheet of paper and some perspex - all the magic happens in software.

3D scanner

A really basic 3D laser scanner. Based on the makerscanner but built without a 3D printer.

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3D Printed components and other hardware to make a PCB routing machine, which inherently can do other things.
Project Owner Contributor

3D Printed PCB mill

dteelDTeel

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A fun project to Rick Roll friends or strangers wirelessly.
Project Owner Contributor

ESP8266 Mobile Rick Roll Captive Portal

jaimejaime

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Well, this is the next evolutionary step from when I first bought the Plab 2.5 spectrometer kit
Project Owner Contributor

DAV 4 UV/VIS Spectrometer

david-h-haffner-srDavid H Haffner Sr

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TODO: recreate using 555
Project Owner Contributor

Hackaday.bash.org

aryaArya

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A tiny robot with flexible PCB legs!
Project Owner Contributor

PCB Robot

carl-bugejaCarl Bugeja

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Visualizes tracks of ionizing particles
Project Owner Contributor

Open source expansion cloud chamber

m-bindhammerM. Bindhammer

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A differential screw is used to make a finely adjustable Z=0 endstop for a 3D printer.
Project Owner Contributor

Differential Screw Z-Axis Optical Endstop

mark-rehorstMark Rehorst

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What I use to photograph my projects.
Project Owner Contributor

My Table Top Photography Studio

steve-schulerSteve Schuler

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A Collection of 3D printable parts for building machines and other mechanical creations from 2020 Aluminum Exstrusions.
Project Owner Contributor

2020 Al Extrusion Erector Set

avrAVR

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Now with more Benchoff
Project Owner Contributor

Hackaday Omnibus Vol 0x3

aleksandar-bradicAleksandar Bradic

1.5k
333
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Build your own floating, self-sustainable ecological makerspace! Work to help nature, surrounded by nature!
Project Owner Contributor

Floating, Bamboo Makerspace

blorggggblorgggg

1.1k
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Foam cutting attachment for Solderdoodle! Recharge from a USB port! Replaceable tips. Easy-to-use!
Project Owner Contributor

Cordless Foam Cutting Tool - USB Rechargeable

solarcycleSolarcycle

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3D printed Screwdriver stand with attached Note Box
Project Owner Contributor

DYI Screwdriver stand

marius-taciucMarius Taciuc

951
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Nanobot based hockey player , controlled by IR
Project Owner Contributor

Nano Robot Hockey Player

patrickpoirier51patrickpoirier51

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Just a last minute cute hack before I went to a camping trip in summer 2009.
Project Owner Contributor

Lampounette

yann-guidon-ygdesYann Guidon / YGDES

589
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1. red 200l steel barrel 2. Nuka cola logor vector graphics 3. ??? 4. profit
Project Owner Contributor

Nuka-Cola Barrel

rawerawe

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Ahh, c'mon, you know you want to rip them out.
Project Owner Contributor

Fistful of Wires

elecia-whiteElecia White

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designed and built a huge vacuum forming machine that can vac-form sheets of 1m by 1m.
Project Owner Contributor

Huge Vacuum Forming Machine

ijonijon

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Steve Schuler wrote 05/03/2016 at 15:44 • point

Thanks for following!

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jareklupinski wrote 04/14/2016 at 17:22 • point

thank you for the skull :)

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marcell marosvolgyi wrote 03/18/2016 at 15:21 • point

Thanks for the skull!

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danjovic wrote 01/29/2016 at 22:31 • point

Thanks for the skull to #Oh Cheat!

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johnowhitaker wrote 01/30/2016 at 05:58 • point

Welcome :) I'm probably going to be building something simmilar and you made my life easy! :P

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Eric Hertz wrote 12/23/2015 at 16:59 • point

Thanks for the project-follow!

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Eric Hertz wrote 01/28/2016 at 03:05 • point

Howdy, Friend! Thanks for the latest! Oh, BTW, I just inheritted an old toner cartridge, so laser-melting-experiments are on their way :)

  Are you sure? yes | no

johnowhitaker wrote 01/28/2016 at 18:12 • point

Ah great! After some deliberation I decided that I couldn't bear leaving my projects behind, so now I'm back at university with fewer clothes and a suitcase full of parts that must have given the airport security guys a shock :P I am hoping to do some tests as soon as I get everything working again. I look forward to seeing what you come up with!

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Eric Hertz wrote 01/29/2016 at 04:13 • point

hahaha, awesome!

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Eric Hertz wrote 04/06/2016 at 01:31 • point

Thanks for another! And it's been a few months, but the laser-melting experiments are now underway. Thanks for the inspiration!

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Eric Hertz wrote 04/21/2016 at 06:56 • point

Thanks for another, and for including me in your blog-worthy PCB-Printer!

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Stefan Lochbrunner wrote 12/08/2015 at 16:00 • point

Hey, thanks for following (and the skull way back during the EDC contest)! :)

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Stefan Lochbrunner wrote 03/04/2016 at 21:16 • point

Thanks for another skull & follow! Once it's done I'll have give your toner process a try :)

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