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We decided not to develop our own hardware, but to use an "off-the-shelf" product. We have chosen a micro controller from M5STACK - the AtomS3. This device has an extremely small design, contains the necessary sensor and also features a display to show additional information. 
The micro controller costs around 18-25 euros plus shipping, depending on the supplier. |
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Here are some suppliers of the device: botland.deberrybase.de voelkner.de eckstein-shop.de AliExpress / M5Stack Official Store |
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The micro controller is supplied without a USB cable and other mounting material - this can be acquired separately. The Atomic RS232 Base can be used for installation directly on a 12V line - see Installing the sensor. The micro controller will be delivered with standard/demo firmware. We supply our own firmware, which you must install. This firmware only works with this specific micro controller and is not compatible with other devices from M5Stack (or other manufacturers). |
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