JeffB418
HYDROS Expert
I found another sensor that works very well with Hydros that provides both humidity and temp. In addition this new sensor is pretty rugged and can be used for high humidity situations like reptile enclosures where other solutions previously would've suffered in these environments. This sensor accurately measures humidity from 0-95%. It requires at least 1 free 0-10V input port on your hydros device. 2 inputs if you want to use temp as well.
The sensor (at time of posting, about $55)
https://www.digikey.com/en/products/detail/amphenol-advanced-sensors/T9602-5-A/5027917
This is an analog sensor with 4 interface wires. 1 ground, 1 5V, and 2 wires for analog output (one for humidity and one for temp). It comes with a 1.8M cable as well.
To use with hydros, you need either 1) a breakout box or 2) be able to solder the sensor wires to a GX12-6 connector.
The pinout of the device is as follows:
If using a breakout box, connect red and green to +5V and GND respectively. If using a GX12-6 connector, red goes to pin 3, and green to pin 6.
Then connect the black wire to the 0-10V input channel you want HUMIDITY on and white wire to another 0-10V input channel you want TEMP on. If using a GX12-6, refer to pinouts here for which 0-10V channel is which pin on that connector (Full DIY Hydros Pinout Cheat Sheet)
To use the analog voltage as data in hydros you need to convert volts to humidity or temp. The chip used in this sensor is deeply covered here: https://www.mouser.com/pdfdocs/AAS916127ETelaireChipCap102714web.PDF
For humidity, the voltage to humidity conversion is fairly easy. Its Humidity (%) = 20*Voltage, so just use a 0-10V input with data type GENERIC, then use OFFSET of 0, and SCALE of 20.
For temp, the voltage to temp conversion is also fairly easy. Its Temp (F) = 59.353*Voltage - 39.936, so just use a 0-10V input with data type GENERIC, then use OFFSET of -39.936, and SCALE of 59.353.
If you are looking for a breakout box to use for this sensor, please consider this one: https://www.jbaquaticsllc.com/produ...true&sa=false&sbp=false&q=false&category_id=5
