new instructions

640.md

@@ -45,14 +45,28 @@ The Python libraries for the 640 board and some example scripts are available vi
 $ git clone https://github.com/darkwaterfoundation/darkwater_python_640.git
 ```
 
-### Example scripts
-
-Now that you have downloaded the 640 libraries you should have a new directory called *darkwater_python_640, so let's move into that directory
+Next you need to navigate into the new directory so enter:
 
 ``` bash
 $ cd ./darkwater_python_640
 ```
 
+And once in there we can install the libraries with:
+
+``` bash
+$ sudo python setup.py install
+```
+
+### Example scripts
+
+Once you are installed we can have a play with the example scripts included in the download. As well as being useful to test each part of your board, they are also handy as a starting point when writing your own scrips.
+
+Let's move into the examples directory and take a look at what is there.
+
+``` bash
+$ cd ./examples
+```
+
 If you list the files in this directory, you should see a few test scripts
 
 ``` bash
@@ -79,7 +93,7 @@ $ python 640servotest.py
 
 This script divides the 6 motor ports into 3 stepper motor ports. Motor 1 and 2 will be stepper 1, motor 3 and 4 will be stepper 2 and motor 5 and 6 will be stepper 3.
 
-Each stepper will be moved forwards and backwards through 200 steps when the test script is run:
+Each stepper will be moved forwards and backwards through 400 steps when the test script is run:
 
 ``` bash
 $ python 640steppertest.py