I get many people asking me, what do I need to connect a 1 wire device to my existing weather station .So I put together this small guide.
Options to think about before you start your 1 wire project . Plan your 1 wire weather station on paper and consider routing the cables to your devices. Read about the different modules and the power they will need. Software is important I recommend weather display it is a very versatile software application you can use an existing weather station and add on one wire modules, you can also create your own 1 wire station. Please see the link on how to set up this example in weather display software.
The first thing you are going to need is acomputer with a spare USB port, and software I recommend using is weather display.
Look at the diagram you will see what is required: 1 wire USB adapter, (I am currently using a1 wire LinkUSB adapter) these devices may use different sockets, the hobby board adapter uses a RJ 11 socket so the adapter cable needed are RJ45 to RJ11 . Most of hobby boards modules connect using a RJ45 plug this makes it easier to connect devices together but there are the odd module you need to wire to terminals , you may need a RJ 45 coupler and cable which you run to your device ,please note you will need to have 1 RJ45 plug attached to one end of the wire in this project .If you purchased a hobby board cable it will come with two RJ45 plugs attached in this example we need to cut off one of the plugs this is because the counter module does not have RJ45 sockets on board.If you are going to add lots of modules I would consider buying some CAT5 cable and purchase a RJ45 crimping pliers to put on your own RJ45 plugs. In the image 2cb when you strip off the cable casing you will see twisted pairs together , untwist the wires you should have 8 different colours, to connect to the counter module we only need to use 2 wires (blue DQ data line) and blue and white GND ground wire) As we are converting a rain gauge in this example you need to attach two pieces of wire from the reed switch in this example B terminal goes to one side of the reed switch, and the other side of the reed switch goes to +5V . This module is powered by the on-board battery.