Hello everyone, I have to use this sensor to measure cloud temperatures and I wanted to know if this sensor can stay in the rain and the weather. I have to put it also about a few meters from the arduino, do you need some care for the signal?
Thank you
Why not see what the datasheet says?
You cannot use leads more than a few cm long if you use I2C method to communicate with the sensor.
Instead, build a small waterproof box for the sensor and a cheap eBay Arduino Pro Mini or similar, and send the results by serial.print() to another computer.
A powered circuit exposed to water or even high humidity will corrode very rapidly. Manufacturers seal circuit boards and wiring exposed to humid conditions with a completely waterproof coating, called conformal coating, or the entire circuit can be embedded in silicone potting compound.
You picked a very nice part. FYI they make devices called buss extenders such as the SparkFun Differential I2C Bus Extender (PCA9615). There are several varieties, some allow cable length to 25 meters +. If you take this path check the current requirements, If my memory is correct they will use from 25 to 50 mA each. There are many ways of doing this but I think this would be reliable and possibly the easiest although not the cheapest. The sensor is rugged and your main concern would be packaging. There is a PWM mode, that could be implemented with two CAN transceivers. The sensor side set to transmit and the other end it is set for receive. I did not check what is involved in setting it up in this mode.
jremington:
You cannot use leads more than a few cm long if you use I2C method to communicate with the sensor.Instead, build a small waterproof box for the sensor and a cheap eBay Arduino Pro Mini or similar, and send the results by serial.print() to another computer.
A powered circuit exposed to water or even high humidity will corrode very rapidly. Manufacturers seal circuit boards and wiring exposed to humid conditions with a completely waterproof coating, called conformal coating, or the entire circuit can be embedded in silicone potting compound.
Thank you!
gilshultz:
You picked a very nice part. FYI they make devices called buss extenders such as the SparkFun Differential I2C Bus Extender (PCA9615). There are several varieties, some allow cable length to 25 meters +. If you take this path check the current requirements, If my memory is correct they will use from 25 to 50 mA each. There are many ways of doing this but I think this would be reliable and possibly the easiest although not the cheapest. The sensor is rugged and your main concern would be packaging. There is a PWM mode, that could be implemented with two CAN transceivers. The sensor side set to transmit and the other end it is set for receive. I did not check what is involved in setting it up in this mode.Thank You!
gilshultz:
You picked a very nice part. FYI they make devices called buss extenders such as the SparkFun Differential I2C Bus Extender (PCA9615). There are several varieties, some allow cable length to 25 meters +. If you take this path check the current requirements, If my memory is correct they will use from 25 to 50 mA each. There are many ways of doing this but I think this would be reliable and possibly the easiest although not the cheapest. The sensor is rugged and your main concern would be packaging. There is a PWM mode, that could be implemented with two CAN transceivers. The sensor side set to transmit and the other end it is set for receive. I did not check what is involved in setting it up in this mode.
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