January 2022 16
ESP-01/01s Relay v4.0
Posted By : Dave Hartburn

While buying something else, I spotted a small wireless relay module for £5 that looked useful, so I thought I’d buy one to investigate. It consists of a ESP-01s wireless microcontroller and a 5v relay.

August 2020 22
ThingsBoard: Setting up mail alerts
Posted By : Dave Hartburn

As well as graphing, wouldn’t it be useful if ThingsBoard could send a mail alert when a particular parameter for a device goes above/blow a threshold, or when telemetry has not been received for a

August 2020 14
ThingsBoard Data Hacking
Posted By : Dave Hartburn

Thingsboard is a great IoT logging platform, however some management of data can be impossible to do from the GUI and can get annoying. The following database hacks provide a workaround to some of the