Portable HDMI monitor

I always felt the need of a portable monitor. First of all, because I did not had a flip-out screen on my previous camera. But it is also very handy when testing hardware, that requires a screen. But of course it can be used as a secondary monitor as well. The screen I bought for… Read More »

Modifying Wemos Relay shield

I generally like the idea behind the Wemos D1 Mini system, but I have to admit, that there is a lot of problem with it. This time I was sorting the issue with the Relay shield. Now the Relay shield is a proper one, the only problem is that it occupies pin D1. Pin D1… Read More »

Fixing Wemos D1 Mini RTC module

I have bought two pieces from the same RTC (Real Time Clock) module for the Wemos D1 Mini (aka. “WIFI D1 MINI Data loggar shield”) from China. The idea here is to keep a time-sensitive smart-thing working even without internet. Is the module faulty? This module utilizes the DS1307 RTC chip, that always requires the… Read More »

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 »

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 »