Recycling Junk E-tags Into A LoRaWAN AQI Sensor

[Aduecho] had seen those cheap eBay deals of e-paper-based pricing tags, and was wondering if they could be hacked to perform some other tasks. After splitting the case open, the controller chip wa…

LoRa Air Quality Monitor Raises The Bar On DIY IoT

We’ve seen an incredible number of homebrew environmental monitors here at Hackaday, and on the whole, they tend to follow a pretty predicable pattern. An ESP8266 gets paired with a common te…

Joker Monitor Keeps An Eye On Hazardous Gas Levels

The Joker is a popular character in the Batman franchise, and at times uses poisonous gases as part of his criminal repertoire. That inspired this fun project by [kutluhan_aktar], which aims to mon…