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 »
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 »
If you have a web server set up in your ESP32 device, you might want to add resources like images or java-scripts, that are referenced from your web documents. I can imagine, that a quite few people does not know, that ESP32 (and ESP8266 as well) has a built in file storage area in the… Read More »
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 »
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 »
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 »
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 »
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 buy plug for this any more. In my case the equipment is a TEAC… Read More »
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 »
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 »