Update README.md

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sanni 2019-09-05 08:13:09 +02:00 committed by GitHub
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@ -3,10 +3,11 @@ Files are still loaded from and saved to the SD card.
![image](https://dl.dropboxusercontent.com/s/txxlylb3kdt2mnb/crcontrol.jpg?dl=1)
Configure the switches like so and use the USB port at the left side of the Arduino Mega:
![image](https://dl.dropboxusercontent.com/s/dcacw30j8fun81j/flashswitches.png?dl=1)
To enable the Serial Monitor follow the instructions on flashing the Cart_Reader sketch to the Arduino as shown here: [How to flash the Arduino Code to your Cart Reader](https://github.com/sanni/cartreader/wiki/How-to-flash-the-Arduino).
But before you hit upload you need to change two lines in the Cart_Reader tab.
**But before you hit upload you need to change one line in the Cart_Reader.ino tab like this:**
```
// Comment out to change to Serial Ouput
// be sure to change the Arduino Serial Monitor to no line ending
//#define enable_OLED
```