Category Archives: Gadgets

New WS2812B LED matrix – Is it damaged?

I have bought two “WS2812B 8×8” LED matrix panels from China for a possible future project. As I wanted to try them out it turned out, that none of them are working. So are they arrived broken? I used a big power supply for powering both the Arduino Nano and the matrix. I have connected… Read More »

DIY USB Pedal device

Sometimes you just need a special USB device for your computer. As your feet are always free, we wanted have a pedal device. The pedal device can act as a keyboard or as a mouse depending on your needs. Just think for the ones experience disabilities. In our special case we wanted a device, that… Read More »

DIY WebCam arm-stand

I have got webcam some years ago, in a rather sad state with a missing foot. I already own some good webcams, I did not felt the need to fix this one, but as this is a very decent camera I still saved it a future project. I had some RaspberryPi point and shoot camera,… Read More »

Make a custom connector plug

I own a vintage audio equipment, that supports remote control connection through a socket populated on the back. I decided to build my own remote controller for the unit. Unfortunately this is a custom type of connector, and you cannot really by plug for this any more. In my case the equipment is a TEAC… Read More »

Build a bunch of test wires

I found these mini test-hooks useful, I already have built some of these, but now I build some. On one end of the cable there is a hook-probe, on the other end an alligator clip. I have purchased from eBay “10pcs 15inch Double-ended Test Leads Crocodile Clip Roach Clip Jumper Wire”, and “Multi-color 10 Pcs… Read More »

How NOT to 3D design a project box

I’m working on a project, where I need a case. So I designed a box in the idea in my mind, that printing two from the same part will fit together face to face. So I have added overhangs, and groves that should meet. But in the end it turned out that they don’t fit.… Read More »

How to design a line following robot

I already have shown how I have made an Arduino controller for my old LEGO robotic kit; and also, how to recognize colors. Now I will form a cool project around these achievements, and build a line following robot. This post focus on two key parts of the build: what is the recommended hardware design… Read More »

DIY Egg Decorating Machine project

Goal I have seen some egg painting machines out there, but I found them too complicated to be a DIY project. These are some kind of CNC laves. In my design the pen (aka. tool) is in your hand, so the pen movement not controlled by the machine. The machine only performs the rotation task.… Read More »

Chess clock

Preface Lately I play some chess again, and I was realized, that it will become very boring, if we do not limit the time of the game. So a chess clock is required, but instead of buying one, it seams to be a great DIY project, and we will have a hackabe clock around the… Read More »