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Updated How to build (markdown)
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@ -164,4 +164,7 @@ Be aware that both display cables twist 180 degrees.
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![image](https://dl.dropboxusercontent.com/s/08ql5k0zarpqxfo/IMG_1584.jpg?dl=1)
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![image](https://dl.dropboxusercontent.com/s/08ql5k0zarpqxfo/IMG_1584.jpg?dl=1)
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## 11) Self Test
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Now that everything is build you should do the self test you can find on the second page of the main menu.
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It checks if the pins are shorted either to GND or to each other. It also checks the 1K resistor and activates the clock generator.
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You can learn more about the self test [here](https://github.com/sanni/cartreader/wiki/Troubleshooting#self-test).
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