Elektro Tehnički Portal


Desoldering tool

It is a tool for desoldering (multi leg) electronic components with 3 or more pins. Theory behind this project is fairly simple. Dissolved solder in heated container heats all contacts of  electronic component placed together with PCB on this tool. All you have to do is remove component from PCB with pliers or with tweezers.  So with this device you can easily desolder 25 pin LPT conector from 2 sided PCB.


iPhone as a frequency generator


To show that iPhone is not just a fashion accessory, as many like to say, read below how to make it a useful device. It is a frequency generator with solid characteristics. Quality will satisfy the needs of amateur electronics and it will be sufficient for the basic measurements and adjustments in audio technology.
Only two components are required, assuming that you have the iPhone:
- Application "Freqgen" which is free and available in the AppStore.
- Adapter that you have to make. Construction is very simple, and the whole process is shown below.

Magnetizator - demagnetizator



Sigurno su vam puno puta pomogli namagnetizirani alati, najbolji primjer je sigurno odvijač. Kad vam ispadne vijak na nepristupačno mjesto sigurno ste ga lako upecali vrhom namagnetiziranog odvijača. Čak i ako nije namagnetiziran, to se vrlo lako napravi prislanjanjem na jaki permanentni magnet. A što napraviti kad vam upravo ta osobina smeta, kad radite na malom prostoru pa vam se za pincetu ili odvijač lijepe matice ili neki drugi sitni metalni predmeti? U nastavku pogledajte kako napraviti jednostavan uređaj koji će vam pomoći da riješite oba problema.

Magnetizer - demagnetizer



Surely magnetized tools have helped you many times, the best example is definitely a screwdriver. When you drop the screw in inaccessible location you can easily pick it up with magnetized tip of screwdriver. Even if not magnetized, it is very easily done just by touching the strong permanent magnet. And what to do when this feature bothers you, when you work in a small space, and small bolts and nuts keep sticking to the screwdriver tip? Continue reading and find out how to make simple device that will help you solve both problems.

Sonoff electric candle

Simple modification of commercial electric candle and installation of very popular Sonoff Basic relay inside candle to make it "smart". Batteries not needed, entire setup is powered from Sonoff!