| Measuring the conductivity of chemical solution is a pretty handy concept in lab or field operations. It can be used to monitor drinking wat...
| Measuring the conductivity of chemical solution is a pretty handy concept in lab or field operations. It can be used to monitor drinking wat...
| The Tektronix 570 Characteristic-Curve Tracer introduced in 1955 draws pretty graphs of a vacuum tube's plate current (vertical axis) agains...
| Some time ago I installed four LED spots in the roof over our terrace. Unfortunately, the spots turned out to be way too bright and so they...
| The Raspberry PI IO-Box is an open source platform for control and automated test systems. It features a versatile & extendable bus capable...
| The nWatch is a wearable development platform in the shape of a smart watch. Based on an STM32 microcontroller, it is equipped with a full-c...
| The Elektor Sceptre is a small ARM7 board based on the LPC2148. The board features Bluetooth, a battery charger, an SD-card slot, an acceler...
| Here's a truly smart and reprogrammable rechargeable battery analyzing instrument with a special mounting system to access the terminals of...
| Sometimes you just want to make something simple, just for the fun of it or to get high on the delicious fumes of hot 60/40 solder and flux....
| Are your communications secure? There are many overhyped "cryptophones" and crypto software programs available today, but can you really tru...
| Searching for a powerful gong or audio notifier? The "Card Sound" board presented here consists of a TDA7266 audio amplifier featuring two 7...