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It’s Here – the ELM327L !

The ELM327L is a new version of the ELM327 integrated circuit that is able to work with supplies from 2.0V to 5.5V (the ELM327 requires 4.2V to 5.5V). It offers all the features of the ELM327, and comes in three different device packages.

For more details, see the ELM327L section of the OBD IC page, or download a data sheet by clicking on the PDF link:

pdf download
ELM327L v2.1
data sheet
(457K pdf)

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The Mobile Web Site is Up!

We’ve just introduced a mobile version of our web site, so that users can better explore while using their tablet or phone. The content remains the same – it’s just how we present it.

The new mobile site is at:

We realize that there are bound to be some initial problems with coding or content, and possibly some formatting issues with certain tablets or phones. If you have an issue or suggestion, please let us know:

Mobile Web Site Comments

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Coming soon – the new ELM327 v2.1

The latest version of our ELM327 integrated circuit will be available for sale soon. It takes the ELM327 v2.0 and adds a few more features:

  • Now supports ISO15765 and ISO14230 ‘Response Pending’ (7F XX 78) replies
  • Has several speed improvements, especially while processing CAN messages
  • We’ve added new filters for more precise CAN protocol searches

These changes add to what is already a great chip.

Note that there are no pin changes with this update (so the chip can be used in existing designs), and that the pricing will remain unchanged. Expect to see this new IC in a few weeks time.

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ELM329 CAN Interpreter – v2.1 update

The latest version of our ELM329 is ready! We’ve made several changes to improve speed and reliability. The biggest visible change is the addition of ‘filters’ that prevent the sending of CAN messages if the baud rate is not correct.

The data sheet has been updated too, with a few new sections. Download a copy using this link:

pdf download
ELM329 v2.1
data sheet
(393K pdf)

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The new ELM325 J1708 Interpreter

This is another vehicle diagnostics interface chip – this time for heavy duty vehicles that use J1708 with J1587 (or J1922). Although these protocols are being phased out (with J1939 replacing them), there are still a very large number of vehicles that use them.

The ELM325 is very similar to our popular ELM327 – the interface is simple, and can be customized with AT commands, the protocol conversion is all taken care of for you, and the circuit only needs a few support components in order to make a complete interface.
For more information, see our OBD IC page, or download a data sheet:

pdf download
ELM325 v1.0
data sheet
(172K pdf)