Welcome to Weather for Asfordby!
These pages are automatically updated in real time with observation data from a home made weather station. The station uses Fine Offset wind and rain instruments, and a high-precision Sensirion SHT85 combined temperature and humidity sensor, all coupled to a custom circuit board containing an ATMega168 micro-controller running custom firmware.
Readings are transmitted using a 868 MHz radio module every 30 seconds to a receiver in the house. The station is powered by a combination of LiPo cell and solar panel, and is housed in a home made Stevenson screen.
Air pressure and temperature/humidity are measured by an indoor unit and transmitted on 868 MHz. The air pressure sensor is a Bosch BMP180, while indoor temperature and humidity are provided by another Sensirion device.
The indoor 868 MHz receiver decodes the weather telemetry (in addition to telemetry from numerous other home made sensors scattered around our property) then transmits it over Ethernet to a computer where it is consolidated and fed to the weather station software WeeWX.
The weather station has been up and running since December 2008, initially using a Fine Offset WH-1080, and the weather software "Wview". The home made weather station was put into service in early 2016, still using "wview".
At the end of January 2021, the station software was switched to WeeWX.
The ATMega168 firmware was modified in February 2021 to report wind gusts according to the generally-accepted standard described here. As such, graphs now depict true gusts as 3 consecutive points (10 minutes). Otherwise, the peak 3-second average wind speed is shown (as a single point).
Weather forecasts and air quality data are sourced from Aeris Weather. Forecasts are updated every six hours. The AQI index is documented here.
WeeWX was updated to version 5.0.2 in May 2024, and a History link was added to the homepage, based on code from here. In addition, the original wooden Stevenson screen was replaced with a 3D-printed version in white PETG which is proving to be every bit as effective as the original screen.
- Station hardware: MQTTSubscribeDriver
- Server uptime: 210 days, 20 hours, 51 minutes
- WeeWX uptime: 36 days, 16 hours, 31 minutes
- WeeWX version: 5.0.2
- Belchertown Skin Version: 1.3.1