My original (other than homebrew during High School) weather equipment is/was One Wire. My main setup is now Davis VP2, but I am still running a number of one wire sensors including the lightning detector. I run One Wire Weather by Simon Melhuish (UK).
I currently have:
TAI-8570 AAG Barometer
Hobby Boards 6CH-R3-A Six Channel Hub
AAG Humidity sender located on North Side of house in a ventilated housing. The One-Wire based system Temperature is from this device.
Hobby Boards LD4-R1-A Lightning Detector on GPC1 OWW Counter
Dallas Semiconductor DS18S20 Thermometer in Davis Passive Shield
Inspeed Anemometer with Hobby-Boards dual counter
The AAG V3 Weather Station is now in a box in the basement due to a dodgy wind vane ADC, prompting the VP2 installation. The rest still works and posts data to my website and WOW http://wow.metoffice.gov.uk/latestobservationservlet?siteID=23083067
. Ignore the wind direction, it is just some default data, there is no wind vane.
Periodically people post looking for help on it, so it is probably worthwhile.