Are you looking for an EMI filter? You can do it yourself with this simple solution.

This project uses the Arduino Uno PWM output to realize a fully isolated analog output with a range...

Do you often forget to switch off the air compressor of your solder paste dispenser? This simple pro...

When you have a power amplifier connected after any sort of audio source, you usually need an additi...

Here is a trick that allows you to connect one or more rotary encoders to a microcontroller while us...

AC loads are everywhere around us because most home appliances are supplied with the mains voltage....

Need to power a bunch of lighting LEDs? You’re probably thinking: "That’s easy. Wire LEDs plus serie...

Even if you don't ride a motorbike, you are sure to find this innovative DIY handlebar remote co...

Testing power semiconductors is not always easy. Multimeters do not provide enough voltage or curren...

This small circuit enables your microcontroller to drive 25% more LEDs while freeing up programming...

These days we are using dozens of electronic devices with switching power supplies working at differ...

Want to build a digital exposure timer with an analog look and feel? You can with some switches, a r...

There are many interfaces to send data to a standard alphanumeric LCD via one wire using a shift reg...

Most induction meters are suitable for small coils, but do not measure with high currents. With the...

The Elektor Audio DAC for the Raspberry Pi was still missing a vital part: a good power supply that...

Current measurement requires the use of an ammeter placed in series with the load. An ideal ammeter...

Elsewhere in this magazine you can learn about a method to connect two ‘digital’ rotary encoders to...

Want to simulate a candle? You can with this simple project, which uses only one active compone...

Even though your car’s interior lighting is not the biggest power consumer, it can still drain...

When cooking food, timing is one of the most important ingredients. This digital timer can be a grea...

Measuring low resistance values is not the strong suit of most multimeters. This instrument enables...

This circuit interferes with the low-voltage connection between the boiler control unit and the hot...

With this circuit featuring a single ATtiny85 microcontroller, you can simultaneously obtain three s...

Need to turn on a device by placing an object on a surface? This low-power IR switch can do the tric...

Need an EMI filter? You can DIY. Check out this simple solution. 

Pulse width modulated switching is an efficient technique to control power dissipated in a load. Thi...

Microcontrollers are not mandatory. Sometimes pure logic does the job.

There are many DC/DC converters available at low cost and with small footprints, but that’s a...

With two tubes for increased sensitivity, this Geiger-Müller tube shield can turn your Arduino Uno i...