What is 1-wire?
1-wire is a:- communication protocol
- wiring scheme
- assortment of devices and "iButtons"
The design and control of the protocol is from Dallas Semiconductor (part of 
Maxim Semiconductor) which has application notes, software, and devices for sale.
The 1-wire protocol is marketing-speak. It is actually 2 wires, one for ground.
The active wire conducts data and power!
What are the advantages?
- Simple connections
- Self configuring
- Cheap and flexible devices
Ok, Disadvantages?
- Relatively slow
- Needs an adapter (bus master) and software (like OWFS).
- Have to be a little careful in wire layout to avoid signal reflections
Best uses
- Home automation
- Easy monitoring
Wine cellar
Aquarium - Fun hacks
Peter Kropf Motorcycle Odyssey
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