05-01-2017, 02:08
Hi laulau,
The BIOS sensor, it's a very cheap device sold as a Wireless Soil Moisture sensor. As a soil moisture sensor it is a very bad device, not suitable for any serious purpose, however, with a little modification it can have an interesting use. The sensor uses a termistor as temperature sensor, and it also sends wirelessly the data from this sensor.
By changing the original termistor installed on the BIOS sensor body, by other with the same specs (we should say thanks to JT118 by his investigation on this matter), per example a cabled waterproof version, you can get a cheap Wireless Temperature sensor to monitor the water temperature of a pond or a water tank. Personally I'm using it to monitor the water temperature of my fish pond (Poor fishes, it's so cold there)
The range is good for up to 10, 15 meters in line of sight, without many walls between.
![[Image: s-l500.jpg]](http://i.ebayimg.com/images/g/tAEAAOSwR0JUSTGB/s-l500.jpg)
This citation is valid for eveybody:
"The more curiosity you have about the system, the more you will get from it."
Certainly I'm wrong, but I really appreciate revealing details like this, only when someone asks.
The BIOS sensor, it's a very cheap device sold as a Wireless Soil Moisture sensor. As a soil moisture sensor it is a very bad device, not suitable for any serious purpose, however, with a little modification it can have an interesting use. The sensor uses a termistor as temperature sensor, and it also sends wirelessly the data from this sensor.
By changing the original termistor installed on the BIOS sensor body, by other with the same specs (we should say thanks to JT118 by his investigation on this matter), per example a cabled waterproof version, you can get a cheap Wireless Temperature sensor to monitor the water temperature of a pond or a water tank. Personally I'm using it to monitor the water temperature of my fish pond (Poor fishes, it's so cold there)
The range is good for up to 10, 15 meters in line of sight, without many walls between.
This citation is valid for eveybody:
"The more curiosity you have about the system, the more you will get from it."
Certainly I'm wrong, but I really appreciate revealing details like this, only when someone asks.