Speaker shelf

I have a small room, that does only accepts bookshelf size speakers, but I do not had a bookshelf in the right place. So I have built these shelves for the speakers. Building steps I had this piece of particle board laying around, left over after installing the kitchen sink. None of the sides was… 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 »

Building a Toy Lawn-mower out of wood

I have built this toy lawn-mower for my son (mostly) out of wood. It started with a plastic lawn mower. It broke, then I fixed it several times, but he always complained about how useless it is. So I promised him to build a better one. We also happen to have a junk ride-on toy,… 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 »

Bluetooth Amplifier case

It seams, that it is very popular now to build portable bluetooth boomboxes. I already have made an active speaker set, but it does not provide bluetooth connection, and while it was designed to portable, it does not contains battery. So now I wanted to have a more portable one with bluetooth support. The TDA7492P… Read More »