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One wire temperature sensor (ds1820) to pc interface. 2010-07-05

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Pommie

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Pommie submitted a new article:

One Wire Temperature sensor (DS1820) to PC interface. - Here is a project I worked on a while ago that I’ve finally got around to documenting.

It inte

Here is a project I worked on a while ago that I’ve finally got around to documenting.

It interfaces Dallas One Wire (OW) temperature devices to a PC using the smallest Pic chip available, the 10f200. The 10f200 can hold 256 instructions and has 16 bytes of RAM so fitting the OW search algorithm in it was rather challenging. It can also use a 12F509.

What the device actually does is to interrogate the Dallas chips one at a time, find their ROM IDs, do a conversion and send a string to the...
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