Vehicle OBD2 Shield is now available in our shop

A revised blue colored with improvements in PCB , better selection of components and some minor changes on the schematic, Vehicle OBD2 Shield  is now available from our shop.

The big bulky HC49 crystal we used in the previous board is now changed with a modern ceramic surface mount low profile quartz crystal, also there are changes in some component values to improve stability. We made a better selection on their quality, the resistors are 1% tolerance metal film, all electrolytic capacitors  on the board are low ESR tantalum type and the heart of the board, scantool’s STN1110 IC, updated to the latest firmware.

For the newcomers the Vehicle OBD2 Shield is an arduino compatible shield, based on Scantool’s STN1110 IC, that helps you get started with your next mobile project. You can find more details in the Vehicle’s OBD2 Shield project page on our website.

If you are a professional engineer , it is an easy way to start prototyping your project. We use it for ourshelves and we always like to share our knowledge.

The heart of this shield is the STN1110 IC from Scantool. You may have heard the ELM327 IC as a chip solution for easy integration with your project and your vehicles electronics. The STN1110 is an evolution of this type of chips.

It’s faster, with much more memory and many more functionalities! It just overwhelm the competition.

Here is a comparison between the STN1110 we use and the closest competitor available.

STN1110 vs ELM327

1 ( STN1110 features 5V tolerant inputs, making it compatible with 5V logic)

This shield support ALL available OBD2 protocols, that means it will work with even more vehicles, not just the newer one with CAN-BUS,  like you do with other shields available using only the MCP2551 CAN Transceiver chip.

Supported Protocols

  • Support for all legislated OBD 2 protocols:
    • ISO 15765-4 (CAN)
    • ISO 14230-4 (Keyword Protocol 2000)
    • ISO 9141-2 (Asian, European, Chrysler vehicles)
    • SAE J1850 VPW (GM vehicles)
    • SAE J1850 PWM (Ford vehicles)
  • Support for non-legislated OBD protocols:
    • ISO 15765
    • ISO 11898 (raw CAN)

Also you don’t have to know the exact protocol of the vehicle you install your device, because this shield has automatic protocol detection. So, you “talk” to all available vehicles using the same way, that’s a must if you want to commercialize your project in the future.

The next days we will release the first public beta version of a library for Arduino that will help you start playing with this shield in seconds! It will help you with the basic communication, like initialize connection with your vehicle’s ECU, check if ignition is on or engine is running and read live values like speed, RPM, etc. In the future we plan to have more software futures available like fuel consumption, engine error codes and more.

So, what if you are an electronic engineer and do it for work, a vehicle hacker or just an enthusiast! grab yourself from our shop this piece of advanced electronics :-) and start sniffing out your car!



29 Responses to “Vehicle OBD2 Shield is now available in our shop”

  1. zipoFebruary 5, 2013 at 2:30 am #

    how to connect to pc, over usb and DB9 cables or wireless

    • KostasFebruary 5, 2013 at 11:18 am #

      Dear Zipo,
      the DB9 connector on board is for the OBD2 connection to the vehicle.

      You can use an Arduino leonardo which has one serial port and one USB port and use the serial port to communicate with the shield and the USB for debug messages.

      If you just want to connect this shield directly to a PC, you will need a TTL->USB or TTL->RS-232 module and just connect RX TX and GND.
      The board will be powered from vehicle’s OBD2 port!

      It’s really easy!

  2. ArthurMarch 12, 2013 at 7:42 pm #

    When will arduino libraries for these boards be available? Will these boards work for a 1994 mercury cougar? My goal is to get speed and average fuel economy from this board as well as outputting other data on a separate serial LCD. Do you think this board will allow me to do this?

  3. KostasMarch 12, 2013 at 8:17 pm #

    Arduino library is already available for the Vehicle OBD2 shield.
    You can find it here:

    If your car support’s any of these protocols then it will work!

    ISO 15765-4 (CAN)
    ISO 14230-4 (Keyword Protocol 2000)
    ISO 9141-2 (Asian, European, Chrysler vehicles)
    SAE J1850 VPW (GM vehicles)
    SAE J1850 PWM (Ford vehicles)
    ISO 15765
    ISO 11898 (raw CAN)
    SAE J1939

    But i am not sure if 1994 model has an OBD2 port, you should check your car first and try to locate an OBD2 socket, or maybe some googling will help.

  4. SimonApril 24, 2013 at 7:21 pm #

    Where can this by purchased and at what price? Your shop links go nowhere.

    • KostasMay 2, 2013 at 12:50 pm #

      Hello Simon,
      our e-shop will be back again soon. We are waiting for a new batch of Vehicle OBD2 Shields because right now we are out of stock!

      Thank you!

  5. PaulMay 9, 2013 at 9:38 am #

    Kostas, i’m waiting too, do not forget about me)))


    • KostasMay 9, 2013 at 10:47 am #

      Hi Paul! Don’t worry, we will all get as many OBD2 shields as we want! We have put a larger batch in production, hope they will be ready soon!

  6. VesaJune 3, 2013 at 2:59 pm #

    Where I can buy these? And what is price?

    • KostasJune 4, 2013 at 1:08 pm #

      the next batch will be ready in about 1-2 weeks! Then you will be able to buy them from our e-shop that will be open again soon!


  7. samJune 16, 2013 at 5:20 pm #

    How can i order one of these stn1110 based shields? does it include the OBD-II connector as well?

  8. NickJune 17, 2013 at 5:12 am #

    Been checking back every day. I keep hoping they are in stock, every day my dreams are shattered :’-(. Please o please I beg of the…. get some more OBD2 shields in stock. I’m hoping from your comment on 6/4/13 that they will show up any day now.

    • sigalabsJune 17, 2013 at 9:23 am #

      Beg no more Nick!

      The boards are on the way!! There was a delay on the assembly line at the factory. Now i am waiting for the DHL to deliver them to us! I hope in the next days they will be available from our shop!

      We will take care next time and delays like these will never happen again.

      • NickJune 17, 2013 at 6:28 pm #

        That’s great news! Thank you for keeping us updated as to the status and ETA. We all understand delays and issues… So, thank you for keeping us informed.

  9. RickJune 17, 2013 at 12:14 pm #

    I’d like to buy one when available again :) .

  10. SpencerJune 27, 2013 at 5:09 am #

    Any update on availability yet?? This shield looks great!

    • KostasJune 27, 2013 at 11:09 am #

      The shield is back in stock, you can buy one from our e-shop. If you have any questions or need further help please contact us using our Contact Form.

      • SpencerJune 27, 2013 at 6:26 pm #

        Great thanks!! Can’t wait to start playing with it. I will be able to stack another shield on top of this one, correct?

        • KostasJune 28, 2013 at 10:21 am #

          As many as you want.. this shield only needs RX – TX pins! (which can be any pin you want if you use SoftwareUART library)

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