Simulating a DS18B20

[CocaColaKid]

Keith,

Thanks for the advise but i need to be able to run them down to -25C and up to 30C. Power resistors wont work well for this type of testing though. I heat pump might work but requires a lot of power though.

[keithdoxey]

Keith,

Thanks for the advise but i need to be able to run them down to -25C and up to 30C. Power resistors wont work well for this type of testing though. I heat pump might work but requires a lot of power though.

Was worth a try

How about using the power resistors and sticking the whole assembly in the deep freeze. LOL

[Archangel]

wouldn't it be possible to use your PC to output the binary or hex code expected from a 3 wire device? The data sheet has a table of temp to code conversion, why can not you simply send it frrom the serial port?