View Single Post
Old 05-17-2010, 09:04 PM   #23 (permalink)
OBDuino coder
Magister's Avatar
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
  Reply With Quote