LinksElm Electronics - Maker of the ELM323 OBD-II to RS-232 interface chip (PDF Datasheet) Figure out which OBD-II protocol your car has (1996 & newer) (Many European cars can access additional information beyond standard OBDII using KWP1281 or KWP2000 protocols. Here's a link to Ross-Tech who makes software (including a free version) to interface with these protocols. A special interface cable is also needed or you can try building one yourself from various schematics found on the 'Net.) Scantool.net - Maker of OBD-II interface circuit and PC software. Free PCB design and software available. Many products and parts available for purchase. Card Labs On-board Diagnostics Resources How to control a HD44780-based Character-LCD (includes PIC interface example) LCD Interfacing Reference Page (good LCD reference) PIC<->4 bit LCD code example (C code) PIC<->4 bit LCD code example (asm code) PIC<->LCD with parallel-to-serial IC chip Connecting a LCD Module to the RS-232 Port Initializing LCD with HD44780 controller in 4-bit mode Hobby of Electronic Circuit Engineering page (some nice PIC info) Comparision of SPI & I2C Another comparision of SPI & I2C (Powerpoint) GnuPic.org Tomi Engdahl's massive collection of circuits and links www.epanorama.net Starting with PIC microcontrollers Good electronics reference Online Pic Microcontroller book (good stuff) On-line Electronic Components Stores:On-line Electronic Components Surplus Stores:
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