Raspberry Pi reading WH1081 weather sensors using an RFM01 and RFM12b

This article describes using an RFM01 or RFM12b FSK RF transceiver with a Raspberry Pi to receive sensor data from a Fine Offset WH1080 or WH1081 (specifically a Maplin N96GY) weather station’s RF transmitter. I originally used the RFM12b, simply because I had one to hand, but later found that the RFM01 appears to work
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Raspberry Pi GPFSEL, GPIO, and PADS Status Viewer

The gpfsel_list (I maybe should have called it lsgpio) utility displays a list of the currently configured function selections across all available GPIO pins and, for pins configured as GPIO, the current state of the pins. For pins configured with ALTn functions, the selected function is listed according to the datasheet information. It also shows
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Raspberry Pi – Hardware Is The New Software

There’s been a lot written about the Raspberry Pi, a small single-board computer with I/O pins on the circuit board, and a small price tag (£25 or so). For me, the most exciting aspect of the Raspberry Pi is the fact that it has lots of methods of input and output of digital signals to and from the board.