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Std EditionNettigo Air Monitor HECA (Heating Element Control Assembly)
License: TAPR Open Hardware License
In this design we used precise temperature and humidity sensor from Sensirion: SHT30 or SHT31 connected via I2C. Sensors are 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.
If you would like to support this project consider buying assembled module form Nettigo.pl or Nettigo.eu.
Nettigo Air Monitor HECA
Open in editorNettigo Air Monitor HECA 0.1.0 (D30)
Open in editorNettigo Air Monitor HECA 0.1.1 (D29)
Open in editorNettigo Air Monitor HECA 0.1.2 (D29)
Open in editorNettigo Air Monitor HECA 0.1.3 (D29)
Open in editorID | Name | Designator | Footprint | Quantity |
---|---|---|---|---|
1 | HE OUT | H2 | NETTIGO PTC HE | 1 |
2 | Nettigo HE Connector | H1 | NETTIGO HE CONECTOR | 1 |
3 | Nettigo SHT30-DIS-F | U1 | NETTIGO SHT30-DIS-F | 1 |
4 | 100nF | C1 | 0603 | 1 |
5 | DMG3420U-7 | Q2 | SOT-23(SOT-23-3) | 1 |
6 | 10KΩ | R1,R2,R3 | 0603 | 3 |
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