I was on vacation this past week, and my home area had a power failure. Internet came back up, and I could reach my router from the internet, but my Home Assistant instance did not come back up. This isn’t entirely abnormal for my setup. Here’s the weird part.
When I got home, I found that all my tasmota devices (NodeMCUs, Kuled switches, Sonoff Basics, and Geeklink IR blasters) had all been reset to their default settings. Noneof them even remembered my wifi information.Luckily, I had everything set to use the wifi manager, so although it was tedious, I could connect to each one’s access point and configure them again.
Why might this have happened? My neighbours said the power was off for about 3 hours. I’ve had longer outages before, and nothing has happened to my devices. Has anyone worked out a periodic backup stragegy for TASMOTA configuration? I’m thinking it should be based on the MAC address of the device because when the power came back, they were all configured as Sonoff Basics! I couldn’t tell which was which easily at first.