update readme

ArduCAM · Nov 18, 2020 · a04171d · a04171d
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diff --git a/Jetson/JetsonNano_PTZ/README.md b/Jetson/JetsonNano_PTZ/README.md
@@ -1,20 +1,37 @@
 ## Hardware Connection
 ![IMAGE ALT TEXT](data/hardware.png)
 
-##Focuser.py
+## Usage  
+1. Download source code
+    ```
+    git clone https://www.github.com/arducam/MIPI_Camera.git
+    ```
+2. Installation dependencies
+    ```
+    sudo apt install python-smbus
+    ```
+3. Enter the source directory
+    ```
+    cd MIPI_Camera/Jetson/JetsonNano_PTZ/
+    ```
+4. Run the example script
+    ```
+    python FocuserExample.py
+    ```
+## Focuser.py
 * zoom-lens basic control component.
 
-##AutoFocus.py
-* Provide two autofocus methods are available, depending on Focuser.py, opencv, picamera
-* Use the `sudo apt-get install python-opencv` command to install opencv.
+## AutoFocus.py
+* Provide two autofocus methods are available, depending on Focuser.py, opencv
+* Use the `sudo apt-get install python-smbus` command to install smbus.
 
-##AutoFocusExample.py
+## AutoFocusExample.py
 * Example of using autofocus, depending on AutoFocus.py
 
-##FocuserExample.py
+## FocuserExample.py
 * zoom-lens controller.
 ```bash 
-lee@lee-desktop:~/JetsonNano_PTZ$ python FocuserExample.py
+lee@lee-desktop:~/MIPI_Camera/Jetson/JetsonNano_PTZ$ python FocuserExample.py
 ```
 ![IMAGE ALT TEXT](data/command.png)
 

diff --git a/Jetson/JetsonNano_PTZ/data/hardware.png b/Jetson/JetsonNano_PTZ/data/hardware.png