Dallas DS18S20 Temp sensor

Don M

I'll give you a little background first- I have a control board that controls a simple refrigerated machine and utilizes this Dallas device to read and monitor the temperature.

So here is what I am throwing out here for the board to discuss- Do you think it is possible to monitor the data coming from the sensor by just piggy backing the data line off the control board· / sensor data·terminal? My stamp could watch for the Read Scratchpad command (BEh I believe) and then display the reading seperately but in tandem with the control board. My question is- is it possible·or has anyone·read a sensor this way by ignoring the commands that the control board sends and only pay attention to the data coming from the Dallas device and "share" this connection?

Thanks.
Don

Franklin

It might be possible but how is the question. You need to make sure you don't load the circuit with the processor.

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- Stephen