The PS Thermo is a smart thermostat project developed by me, consisting of a control hub (that also acts as a gateway) and various sub-GHz RF wireless sensors/actuators. In essence, it is a much more advanced version of the BBoilRF…
ESP32 OTA firmware update using compressed firmware image over HTTP (s) / MQTT (s)
Performing Over-The-Air firmware update over a slow/unreliable internet connection may be challenging. I have had many cases, where the edge nodes to be updated are in a remote rural area with a 2G modem internet connection, and pushing a let’s…
ESP32 OTA firmware update using MQTT over SSL
My recent IoT projects are capable of performing OTA firmware updates, I have previously blogged about the importance of this capability. I normally use MQTT over SSL as a means of communication between the edge nodes and the cloud backend,…