add openmv images

docs/source/usage.rst

@@ -27,8 +27,8 @@ Or copy the code below into a file called nanonav.py
 
 ..  _Workflow:
 
-Workflow
---------
+Workflow Using OpenMV
+---------------------
 Here is how you can program your Arduino. You will need a file called `main.py` that contains your MicroPython code - you can create other files 
 and import them as usual, but `main.py` is the one that will be run on the Arduino. We'll explain a bit more about :ref:`MicroPython` below. For getting started quickly, we recommend downloading this installation check 
 :download:`main.py </../../tests/installation_check/main.py>` to verify that everything is working correctly so far. Alternatively, copy the following into a file called `main.py`:
@@ -46,8 +46,24 @@ and import them as usual, but `main.py` is the one that will be run on the Ardui
    </div>
 
 We recommend creating a folder that you will use for your MicroPython code - put both `nanonav.py` and `main.py` in that folder. Open the OpenMV IDE application. Use the File -> Open Files menu to select the `main.py` file that you downloaded.
-Connect your Arduino to your computer using a USB cable. Click the "Connect" button in the bottom left of OpenMV IDE. The arrow below it should turn green when connected. Click that arrow to run
-your code on the Arduino. If all worked well, you should see :red:`TODO`.
+Connect your Arduino to your computer using a USB cable. In the bottom left of the OpenMV IDE, you should see this:
+
+.. image:: images/openmv_unconnected.png
+   :height: 100
+   :alt: OpenMV unconnected symbols
+
+If you don't see this, it means that OpenMV doesn't recognize the board. You can wait for a little and try messing with your USB conection (different cable, different port, unplug/replug, etc.). Once you see this, click the "Connect" button (the USB connection, or upper button of the two in the image).
+
+The arrow below it should turn green when connected.
+
+.. image:: images/openmv_green.png
+   :height: 100
+   :alt: OpenMV connected symbols
+
+After you can see the green arrow, you should be able to see the Arduino as an external drive in FileExplorer (Windows), Finder (Mac), or the equivalent for your Operating System. It will likely be named "NO NAME" and should contain a `main.py` and `README.txt` file. Copy the `nanonav.py` file over to the Arduino (external drive) by either Ctrl-C Ctrl-V or drag-and-drop. This will enable you to import nanonav when you run your code on the board.
+
+Click the arrow to run the code in conjunction with the laptop, AKA laptop mode. Running in laptop mode enables you to make print statements, which will be printed to the Serial Terminal in the OpenMV IDE. You can expand this terminal by pressing its corresponding button in the bottom left of the IDE. Note that when running in laptop mode, you must have the Arduino connected to the laptop. Once you disconnect the Arduino, your code will no longer be running.
+To run code without the laptop connected, you need to run in solo mode. Do this by going to Tools > Save open script to OpenMV Cam (as main.py). This will write the file you have open to the Arduino under the name "main.py". An alternative way to do this would be to copy the file over in FileExplorer like we did for nanonav.py. If you copy the file using FileExplorer, make sure it's named main.py, as the Arduino looks for and executes only the main.py file.
 
 We recognize that OpenMV IDE is not a very nice editor to write code in, so feel free to open `main.py` in your favorite editor (such as VS Code) for editing and run them from OpenMV IDE.