I bought this wooden puzzle few weeks ago from the flea market for 3 TND ($1). The build quality is quite good. It's composed of 7 different pieces that must be assembled in a 3x3x3 cube. Solving this puzzle manually is complicated. There is no apparent solution other than brute-force.
Having a weather station at home is very useful. The most important information is the indoor temperature. Required parts * WeMos D1 mini (ESP8266) * DS18B20: digital thermometer * MAX7221: LED display driver * 7 segments LED: 4 digits common cathode * 4.7 kΩ resistor: 1-Wire pull-up resistor * 10 kΩ resistor: LED brightness * Micro
The WeMos D1 mini was developed for the tinkerers. It's based on the ESP8266 chip. There are many cool DIY projects that you can achieve with this board. It's very similar to the Arduino, has a built-in WiFi, and much cheaper (around $3 on eBay). I currently have 2 of
This is the second device that I bought last week (see the KOSS KS5302 [https://aminebenhariz.com/koss-ks5302/]). This device is presenting no physical damage, and the PCB looks fine too. But, unlike the KOSS, it's partially working: the CD motor is rotating, the LCD screen has some faint scrambled
Last week, I bought 2 audio CD players from the flea market for 10 TND ($3.50). Here I'm presenting the first device : KOSS KS5302. Currently it's not working, but I'm trying to fix it. I noticed some alkaline battery leakage on the connector and also on the PCB (see