new 640

640.md

@@ -16,13 +16,51 @@ The 640 board is used to drive up to 6 DC motors and 2 Servo motors.
 
 ### Introduction
 
-Test
+The Python libraries for the 640 board and some example scripts are available via our GitHub repository. To install them open a terminal window on your Raspberry Pi (unless you are running with only the command line) and enter the following:
 
 ``` bash
-git clone https://github.com/darkwaterfoundation/darkwater_python_640.git
+$ git clone https://github.com/darkwaterfoundation/darkwater_python_640.git
 ```
 
-### Import libraries
+### 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
+
+``` bash
+$ cd ./darkwater_python_640
+```
+
+If you list the files in this directory, you should see a few test scripts
+
+``` bash
+$ ls -al
+```
+
+#### 640motortest.py
+
+This script will start each motor port, in the forwards direction, in turn from left to right and then do the same backwards. To run the script enter the following:
+
+``` bash
+$ python 640motortest.py
+```
+
+#### 640servotest.py
+
+This script will move any servos connected to the servo headers left, then center, then right. To run the script enter the following:
+
+``` bash
+$ python 640servotest.py
+```
+
+#### 640steppertest.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:
+
+``` bash
+$ python 640steppertest.py
+```
 ### Drive a motor
 ### Motor speed
 ### Servo control