Lambda and knock sensor on one UNO

Support forum for the Lambda Shield designed to connect Bosch LSU 4.9 wideband oxygen sensors to Arduino projects.
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Strgan
Posts: 3
Joined: 10 Jan 2020 14:26

Lambda and knock sensor on one UNO

Post by Strgan » 10 Jan 2020 14:33

I know that some shields can be used together, but I am curious if this one can?

According to my opinion, there are some pins which are used for both shield like digital output for LED.

If I overdrive these pins, and make correction in code, will I be able to use both shields?

What about SPI CLK, MISO, MOSI, NSS or RX? It would be okay if they are used for both shields?

Thanks.

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Christian_Bylund
Posts: 255
Joined: 07 Mar 2015 18:09

Re: Lambda and knock sensor on one UNO

Post by Christian_Bylund » 11 Jan 2020 00:20

Hello Strgan,

The simple answer is that you can not stack the Lambda Shield and Knock Shield on one Arduino UNO. The tricky answer is that you can probably connect the Knock Shield on the side using a breadboard, selecting the pins and functionality you require. It would definitely be possible using the Arduino Mega.
Best Regards,
Christian Bylund
Bylund Automotive AB

Strgan
Posts: 3
Joined: 10 Jan 2020 14:26

Re: Lambda and knock sensor on one UNO

Post by Strgan » 15 Jan 2020 21:51

Thank you for respone :)

One quick question, did you or someone else tried to connect Bosch 4.2 Lambda insted of 4.9?

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Christian_Bylund
Posts: 255
Joined: 07 Mar 2015 18:09

Re: Lambda and knock sensor on one UNO

Post by Christian_Bylund » 15 Jan 2020 21:58

Strgan wrote:
15 Jan 2020 21:51
One quick question, did you or someone else tried to connect Bosch 4.2 Lambda insted of 4.9?
I have not seen the need, why use LSU 4.2 instead of LSU 4.9?

Image

According to the datasheet you need to configure the CJ125 by changing 2 resistors for it to work with LSU 4.2, I have not verified it.
Best Regards,
Christian Bylund
Bylund Automotive AB

Strgan
Posts: 3
Joined: 10 Jan 2020 14:26

Re: Lambda and knock sensor on one UNO

Post by Strgan » 23 Jan 2020 15:51

Because I have two spares. Thank you very much for your help :)

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