diff --git a/doc/u-blox7-V14_ReceiverDescrProtSpec_(GPS.G7-SW-12001)_Public.pdf b/doc/u-blox7-V14_ReceiverDescrProtSpec_(GPS.G7-SW-12001)_Public.pdf
new file mode 100644
index 0000000..f9fa16b
Binary files /dev/null and b/doc/u-blox7-V14_ReceiverDescrProtSpec_(GPS.G7-SW-12001)_Public.pdf differ
diff --git a/rpi/README.md b/rpi/README.md
index 2aa8e9d..9558f41 100644
--- a/rpi/README.md
+++ b/rpi/README.md
@@ -51,6 +51,13 @@ pacman -S python
 git clone https://aur.archlinux.org/python-smbus.git
 cd python-smbus
 makepkg -sri
+
+#pip
+pacman -S python-pip
+
+#nmea
+pip install pynmea2
+
 ```