+LED_BLUE = pin.PG2
+
+## For compatibility of 40-pin header to RasPi & others
+## With these definitions most examples run out of the box.
+
+D0 = pin.PI1
+D1 = pin.PI0
+D2 = pin.PB21
+D3 = pin.PB20
+D4 = pin.PH2
+D5 = pin.PB3
+D6 = pin.PI21
+D7 = pin.PI14
+D8 = pin.PI10
+D9 = pin.PI13
+D10 = pin.PI12
+D11 = pin.PI11
+D12 = pin.PI20
+D13 = pin.PB13
+D14 = pin.PH4
+D15 = pin.PH5
+D16 = pin.PB6
+D17 = pin.PI19
+D18 = pin.PI3
+D19 = pin.PB7
+D20 = pin.PB12
+D21 = pin.PB8
+D22 = pin.PI17
+D23 = pin.PH20
+D24 = pin.PH21
+D25 = pin.PI16
+D26 = pin.PB5
+D27 = pin.PI18
+
+RX = pin.PH4
+TX = pin.PH5
+
+SDA = pin.PB21
+SCL = pin.PB20
+
+SCLK = pin.PI11
+MOSI = pin.PI12
+MISO = pin.PI13