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For OBD logging to a laptop, you'll have to enable the serial port and in the get_pid() function you'll have to do a serialWrite() with the info you want to export.
The transistor is used to drive the brightness as some LCD LED can take 100mA and the pins only output 20mA so if you plug the pin directly on the LCD, you will burn the pin output.
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2013 Hyundai Sonata Hybrid
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