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opendata-stuttgart / sensors-software

sourcecode for reading sensor data
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Add dehumidifier HECA from Nettigo support #597

Open DeeKey opened 4 years ago

DeeKey commented 4 years ago

Polish company Nettigo made an open source design to create a humidifier. https://nettigo.eu/products/1709

They also added support for humidifier in their branch of code: https://github.com/nettigo/air-monitor/tree/master/airrohr-firmware Electrical schemes https://easyeda.com/nettigo/Nettigo-Air-Monitor-Heating-Element-Control

It will also be important to mark data received with working humidifier to distinguish it from other sensors without humidifier. Also we need to add (translate) a proper documentation how to assemble this thing.

dirkmueller commented 4 years ago

as far as I can see the HETICA support in that fork of the firmware is simply addition of I2C SHT30 sensor, which is already available in the NRZ-2019-128 or newer firmware. I see no "controlling" function, just collecting the sensor data and uploading it. we already do that in this version of the firmware.

dirkmueller commented 4 years ago

I agree the documentation should be integrated, it seems a useful feature..

DeeKey commented 4 years ago

There is a code to control HECA. https://github.com/nettigo/air-monitor/blob/d9b0e976d07870d9ac02b351f050090dd9faf779/airrohr-firmware/airrohr-firmware.ino#L3641

Also from description: "In this design we used precise temperature and humidity sensor from Sensirion SHT30 connected via I2C. Sensor is equipped with ALERT output. This output is connected to N-channel MOSFET and controls PTC Heating Element. Huge advantage of this design is ALERT logic which can be programmed via I2C and it's independent from main micro controller. In other words apart of sensor initialization it doesn't require any action from main micro controller." https://nettigo.eu/products/nettigo-air-monitor-heca-ptc-heating-element-control-assembly