diff --git a/README.md b/README.md
index 5881c45..e65d7eb 100644
--- a/README.md
+++ b/README.md
@@ -5,4 +5,24 @@
 
 95% based on Kevin Sangeelee's work at http://www.susa.net/wordpress/2012/08/raspberry-pi-reading-wh1081-weather-sensors-using-an-rfm01-and-rfm12b/
 
+See also:
+
+  http://www.raspberrypi.org/forums/viewtopic.php?p=152023
+  http://www.quasaruk.co.uk/acatalog/RFM01.pdf
+
 Works on a Raspberry Pi V2 with an RFM01 module.
+
+Module connections:
+
+RFM01   ->   RPi    (pin)
+=========================
+SDO          MISO   (21)
+SDI          MOSI   (19)
+SCK          SCLK   (23)
+nSEL         CE0_N  (24)
+DATA/nFFS    GPIO27 (13)
+VDD          3V3    (1)
+GND          GND    (6)
+
+
+17.3cm wire connected to ANT