Engineering insights: ESP32-CAM unboxed, enhancing RC oscillators, and more

If you can't see this message properly, view it in your browser. March 15, 2024 | #582    Sinewave Inverter with Power Factor Correction Power inverters are used to generate AC powerline voltages like 230 VAC or 115 VAC in the field, using high capacity 12-V or 24-V vehicle batteries. They come in a wide variety of output powers (anything between 15 and 1,000 W) and quality of the AC output voltage (anything from abominable to pure sinewave). Some models even have output voltage regulation.  more...  The Fnirsi S1 Multimeter: Smart With Large Display (review) The Fnirsi S1 multimeter features a large color display and is also smart, meaning that it detects whether a DC voltage, an AC voltage or a resistor is connected to its inputs and automatically shows the corresponding value on the display. It also measures capacitance, diodes, temperature and frequency, it has a built-in contactless voltage detector and an LED light.  more...  Raspberry Pi   Raspberry Pi Volumetric Display Discover a 3D LED display revolutionizing visuals. James Brown's volumetric design brings DOOM characters to life in a way the original never did.  more...  Elektor Labs 2024 Project Contest: Empowering Innovation for a Sustainable Future Join the Elektor Labs 2024 Project Contest: #Elektor2024Contest - Let's innovate together for a better tomorrow! This is more than a competition; it's a chance to contribute to a smarter, sustainable future by combining tech creativity with global sustainability goals.  more...  Labs   Enhancing RC-Oscillators: A Simple Approach to Extending Frequency Control Increase potentiometer frequency control span with a factor of 10 or more by wiring it up differently. This approach can also be used to extend the range of a pulse width/delay control. Example circuits are shown. Advantage compared to standard circuits: The increased span adds lower frequency range without scarifying control resolution at the high end.  more...  Circuit: DIY In-Circuit Capacitor Tester Do you have a need to find faulty capacitors? High ESR can lead to problems. Back in 2002, Elektor published an article about a DIY in-circuit capacitor tester, and the Elektor Lab team designed the PCB.  more...  ESP32-CAM: Unboxing and Setting Up Discover the power of the ESP32-CAM, which combines Wi-Fi and Bluetooth capabilities with an onboard camera and easy programming. It's time to get creative!  more...  Store Offer Would you like to know more? Advertising details: click here. Feel free to contact the Elektor team. You are subscribed as: manojdole1.Electronics@blogger.com. Choose whether you want to receive the editorial newsletter or also our store offers, or both. You can change your GDPR preferences here. You can read our privacy policy here. A production of: Elektor International Media BV, Oude Rijksweg Noord 64A, 6114 JG Susteren , Netherlands Phone +31 (0) 46 438 9444. • info@elektor.com • www.elektor.com VAT Nr.: NL8161.46.962.B.01 • KvK: 34249926 CEO: Don Akkermans For more security and convenience: Add us to your e-mail programme's address book. Your programme will then recognise us as a safe sender and display the images immediately. To unsubscribe from all our newsletters (including our editorial newsletter) here.