USB ELM323

Weight: 150 g

Price: $35

Shipping: Calculated at checkout

ELM323 - OBD (ISO) to RS232 Interpreter

The ELM323 completes our trio of OBDII ICs, allowing you to talk to your ISO 9141-2 or ISO 14230-4 standard OBDII equipped vehicle using an RS232 serial connection. It transparently converts between a 10.4KHz ISO data stream and standard ASCII characters, allowing trouble codes and operating parameters to be easily retrieved without the need for special software. No knowledge of data formatting, error checking, bus initiation etc. is needed either, as the ELM323 handles all of it for you.

The present version of the ELM323 (v2.0) provides several programmable features that the previous versions did not offer. It now allows programmable header bytes, adjustable timeouts, the ability to report in the packed data mode, and offers a special monitoring mode as well. This is in addition to all of the capabilities that the v1.x ICs offered - the full seven byte command structure, two line (K and L) initiation, software selectable linefeeds and character echoing, and the visual feedback provided by the four LED outputs.

Description of ELM323

The ELM323 is a 14 pin integrated circuit that, with only a few esternal components, is able to convert between the OBD data format and the standard RS232 serial data format. This allows virtually any personal computer or PDA to communicate with a vehicle using only a standard serial port and a terminal program. If desired, hobbyists can even create their owm custom 'scan tool' by adding an interface program.

Please note that wile this ingergrated circuit has undergone to be an experimeter's cuicuit. It does support a great many of the ISO9141 and ISO14230 (KWP200) protocol vehicles, but not all of them, due to the many interpretations of these standars that are to be found in use.

Features of ELM323

Low power CMOS design
Crystal controlled for accuracy
ISO 9141-2 and ISO 14230-4protocols
Configurable with AT commands
Standard ASCII character output
Four high current LED drive outputs

Application of ELM323

Diagnostic trouble code readers
Automotive scan tools
Teaching aids

Specification of USB ELM323

Heavy & robust casing for rough service use
Connects to PC via USB
Working for ISO9141/KWP2000 protocol over ELM323 Interpreter MCU
Cable is based on certified ISO9141 Bus Transceivers and USB level shifters
Bi-colour led for each K-line which shows the current logic status
Powered from car battery over OBD2 connector

Functions of USB ELM323

Software for ELM32X-based interfaces

USB ELM323 Free software

GM Mode 22 Scan Tool by Terry
OBD Gauge for PalmOS and Pocket PC by Dana Peters
OBD Logger by Jonathan Senkerik
OBD-II ScanMaster by Wladimir Gurskij (ScanMaster 3.52 - local copy)
obd2crazy.com
OBD2 Scantool by Ivan Andrewjeski
OBDII for ELM322 by David Huffman
pyOBD by Donour Sizemore for MacOSX and Linux
RDDTC by Pete Calinski
Real Scan by Brent Harris
ScanTest for Pocket PC by Ivan Ganev aka a-ser
wOBD by WDT

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