Browsing the internet, I stumbled over an interesting video on YouTube were a guy shows a very cheap ESP32+camera solution to read the analog readout of water meters.

The software was developed by JomJol and provided on his Github repository. All you have to do is to buy an ESP32+camera module, flash the firmware und the SD-Card and then the water meter is read.

I found a very interesting air quality sensor board from the Germany company OhmTech on Tindy. One of this magic Bosch Sensortec sensor - the BME680 - is used in conjunction with an STM032F72 microcontroller to give a neat "USB-sensor-stick":

Configuration of SONOFF TH16 module with current TASMOTA FW 

Simple full restore IOT database

2014 CW (Morse Telegraphy) was added to the German Nationwide Inventory of Intangible Cultural Heritage.

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