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Magister · 05-17-2010, 10:04 PM

Your ELM327 interface is a closed enclosure? if it's the case you have to put a "NULL modem", a cable with TX/RX crossed, between your ELM interface and the freeduino. For the LCD there is a diagram on the wiki of the project
OBDuinoDiagram - opengauge - Whole diagram of the Arduino board, LCD, interface - Project Hosting on Google Code

05-17-2010, 10:04 PM	#23 (permalink)
Magister OBDuino coder Join Date: Jun 2008 Location: Montréal, QC Posts: 212 Titine - '13 Hyundai Sonata Hybrid Thanks: 3 Thanked 10 Times in 8 Posts	Your ELM327 interface is a closed enclosure? if it's the case you have to put a "NULL modem", a cable with TX/RX crossed, between your ELM interface and the freeduino. For the LCD there is a diagram on the wiki of the project OBDuinoDiagram - opengauge - Whole diagram of the Arduino board, LCD, interface - Project Hosting on Google Code __________________ 2013 Hyundai Sonata Hybrid