DS1820 temperature sensor for WL 500gp


Posted on Feb 5, 2014

Hello, I`ve made a DS18S20 -based serial port temperature sensor. I would like to connect it to the usb port on my Asus WL-500gp v2. The temperature sensor works perfectly on the pc connected to a serial port directly, but I can`t get it to work with my usb-rs232 serial port adapter. I think the problem with my circuit is that the serial port adapter supplies only 5 volts (like usb does) and a ``real`` serial port should supply a little bit more..? I know I could take the power from..


DS1820 temperature sensor for WL 500gp
Click here to download the full size of the above Circuit.




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