03-09-2016, 02:44
Quote:Ont he breadboard in the picture yes - but you can see a resistor at the base of a transistor 2N2222 to actually drive the fan. I have connected the fan directly to the arduino but I believe using the transistor is better
Wise decision. According to the sensor datasheet the fan consumption is 140mA and the maximum current you can drain from an Arduino nano pin is 20mA.
I'm thinking in ordering one DN7C3CA006 for myself, I found some sellers on eBay. Do you bought yours on eBay?
I still haven't fully figured in my mind how to integrate it. The better and more efficient way will be create a dedicated RF unit, sending a new sensor ID info. Integrate the sensor on the existing TX units, may not be as easy as it seems at first sight.
With time, something will come out...