| Back in 2011, Elektor presented a DIY 50-m range directive sound beam using an array of piezo ultrasonic transducers (up to 200) driven with...
All items tagged with DIY electronics and Circuits & Circuit Design (40)
| Join the fascinating conversation with Clemens Valens from Elektor in this video, and enjoy his insights from his career in engineering, ele...
| The MAX7219 is a very useful and versatile display driver that can drive up to 64 LEDs independently. It’s well-known, but existing tutorial...
| Many hi-fi enthusiasts agree that vinyl offers a unique sound that stands apart from digital audio sources. In a popular Elektor article in...
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| The available range of opamps is vast. After selecting based on technical specs, further testing may be needed. Try this do-it-yourself opam...
| First introduced in the early 1970s, the 555 timer integrated circuit is arguably one of the most popular ICs ever made. Rediscover the icon...
| Looking for a weather station project? This example highlights an ESP32-based weather station, which measures key weather parameters such as...
| Do you need a multifunction frequency meter for making time-related measurements? Take a look at this user-friendly design from 2004. It’s a...
| RS-485 or RS-422 buses are still widely used in industry for access control, video surveillance and many other applications. However, the st...
| Instead of attenuating strong signals, this updated audio limiter circuit amplifies quieter sections to manage dynamic range. This design mi...