OK thanks again for the great software... just a thought on esp32 version.. i only just realised that the esp32 has an internal hall effect sensor... tried this code and it works great... could this ...

There’s a huge market for 433 MHz alarm system hardware out there, from PIR motion detectors to door and window sensors. If you want to put them to work, all you need is a receiver, a network-enabled ...

I've been playing around with a couple of ESP32 microcontrollers, and that experimentation has taught me a lot about sensors and what you can build for really, really cheap. For as little as $4, you ...

This project provides firmware for an ESP32 (Arduino framework via PlatformIO) to measure bicycle wheel speed using a Hall-effect sensor (or reed switch) and stream speed to a PC over USB Serial. It ...

Zigbee is a protocol that has been around for quite a long time, and you can purchase many cheap smart sensors to incorporate into your own Zigbee network. Zigbee is its own network, meaning that it ...

There’s no shortage of ESP32 development boards out there, with many of them offering some “killer app” feature which may or may not align with whatever it is you’re trying to do. But if you’ve got a ...

Abstract: Fire detectors and monitoring systems have been proven to save many lives, making them a promising investment. A fire detector is well acknowledged as one of the best preventive measures to ...