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Hi - I'm not an expert on the I2C protocol, but it sounds like you would have to partially rewrite the portion of the code corresponding to the temperature sensor in order to use the DS18B20. The project runs without the temperature mode completed, so I would say complete the rest of the project, and see if you can add a temperature sensor last!
Hi! The entire code used to run the code is at the end of step 9, in a file called Big_LED_test.ino. All of the libraries used are listed at the front of that file. Let me know if you have any further questions!
Pomona College Electronics Projects