Using a relay with the ESP32 is a great way to control AC household appliances remotely. This tutorial explains how to control a relay module with the ESP32. We’ll take a look at how a relay module works, how to connect the relay to the ESP32 and build a web server to control a relay remotely (or as many relays as you want).
United Nations will fund 60 startups to create open source technologies to improve the lives of children in developing countries. Each will receive, if using open source and could show a working prototype, around $50,000. The investment will be channeled through a “Venture Capital” funding method, for a total amount of $9,000,000. Fabian said: “Companies…
If you need to strip a cable or two, that’s easy enough. However, if you have to strip and cut several dozen cables all to the same length it becomes a boring thing. This is why Mr innovative has created a machine that cuts or creates surface cuts to facilitate peeling in user-defined points. The…
Can we “listen” a difference between pouring hot and cold water? As you see in the video you can do it, but why? It is mentioned that the change is due to complex fluid dynamics reasons. Beyond the scientific investigation, the question we asked ourselves was: is this ability to “listen to temperatures” something that…
The GrapeBoard SBC, which runs Linux on NXP’s single-core, Cortex-A53 QorIQ LS1012A SoC, is designed for IoT applications that require a combination of CPU performance, high-speed networking, and data storage and retrieval, including sensor gateways, communication hubs, and secure edge devices. The LS1012A is still the only SoC that uses a 64-bit Cortex-A architecture processor…
![Pi Top [4]: Raspberry Pi 4 Based mini-PC](https://oe2.open-electronics.org/wp-content/uploads/2019/06/pitop4.webp)
Pi-top has preannounced its first mini-PC form factor Pi-top and the first Pi accessory to feature the new Raspberry Pi 4 Model B. The pi-top [4] works more like a portable PC, with the Raspberry Pi 4 encased in a rectangular (and colorful) vessel. Pi-Top is eager to tout the performance advantages of the latest-and-greatest…
Flutter is a wireless electronics development platform based on Arduino. With over half a mile of usable range, a powerful ARM processor, and integrated encryption, Flutter makes it easy for you to build projects that communicate across the house, across the neighborhood, and beyond. Whether you want to check the temperature of a beer-brewing setup,…
Open-Electronics.org is the brainchild of a world leader in hobby electronics Futura Group srl. Open-Electronics.org is devoted to support development, hacking and playing with electronics: we share exciting open projects and create amazing products!
Open-Electronics.org is not just a container of ideas: it is also a web site lead by a team of engineers and geeks who will take part in the discussions and give support.
Our mission is to become a reference Open Source hacking site with ideas and feedback aimed to enrich the community.
