Category: Electronics

300W Konstantstrom LED Treiber (Buck Converter)

So, nach den vielen englischen Artikeln schreibe ich wieder einmal einen in Deutsch. Ich habe vor ein paar Wochen eine Konstantstromquelle für eine gepulste LED Leuchte “gebastelt”. Wie das manchmal so ist, hat mein Vorhaben nicht so funktioniert wie ich mir das vorgestellt habe, da die Energiedichte der Leuchte massiv zu klein ist. Naja immerhin…

Word clock on steroids

Nowaday it seems that everyone is building a word clock. The idea is nothing new anymore so I shouldn’t build one too, right? WRONG! Instead of going the easy route and rebuild a proven design I decided to create my own and beef it up a little. It’s definitely more expensive, more work,…

DIY IGBT controlled 1000Ws Flash Unit

The goal of this project was to develop a flash unit which is capable of withstanding continuous
operation over a “long” period of time before it needs maintenance. To be precise: 10 Million flashes of 1000J through a load of about 0.8Ohm. With a flash interval of 4 seconds this means about 1.5…

24S+ LTC6804 BMS with various Sensors and Logging Function

A few weeks ago I decided to build a Battery Management System based on the LTC6804-1. The reason that made me build a BMS was the lack of economically priced high grade systems that are also customisable and extendable. The last few Battery Management Systems I used were also absolutely not serviceable (sealed with…

Review: PCB fabrication

This was my first time ordering from I was quite impressed by the speed they produced my PCBs. I ordered 75 PCBs with the following specs:

Max X-Dimension (cm): 15
Max Y-Dimension (cm): 15
Layers: 2
PCB Thickness (mm): 1.6
Copper Thickness: 1 oz
Surface Finish: ENIG
Solder Mask Color: White

RFID/NFC Implant [English]


RFID stands for Radio Frequency Identification and NFC stands for Near Field Communication. Most smartphone nowadays support NFC and some also support RFID (like the Samsung Galaxy S3 but not the S4/S5!)

RFID/NFC tags are fairly widespread in items we use daily: Theft protection, mobile phones,…