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| In the May 1979 edition of Elektor we published a “Simple Sound Effects” unit. The author was rightly proud of the design which used a CD40...
| For many years the serial RS232 computer port could be relied upon as a sort of MacGyver universal port. Nowadays PCs are unlikely to be sup...
| For sure: this is not a very original project: countless people designed a clock. Why another one? Well, this is a very compact clock built...
| Last time I talked about how to setup and use libraries in DesignSpark. Today we’ll make a simple bi-color LED driver to learn how to use th...
| When a servo motor starts to malfunction there is generally not much to see from the outside to help diagnose the problem. That’s why every...
| It all started with the Measurement Filter for Class D (100540-1) published in issue 415, July/August 2011. It was designed to handle large...
| This circuit gives a signal using an LED when the voltage of a monitored battery drops below an adjustable minimum value. The NEI (Near...
| This small test circuit is a handy aid for anyone who frequently works with servos. It is often sufficient that you can connect a servo to t...
| Thirteen years into the new millennium, people no longer take printed maps on cycling trips. A smartphone suffices! However, with power for...