3.3V Usage

Support forum for the Lambda Shield designed to connect Bosch LSU 4.9 wideband oxygen sensors to Arduino projects.
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emir
Posts: 1
Joined: 13 May 2024 21:15

3.3V Usage

Post by emir » 13 May 2024 21:20

Hello,
how can I connect a module to a 3.3-volt board like Arduino Due or ESP boards, and do I need a logic level shifter for SPI or not?
Also what steps should I take for voltage levels UR and UA?
Regards

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Christian_Bylund
Posts: 261
Joined: 07 Mar 2015 18:09

Re: 3.3V Usage

Post by Christian_Bylund » 16 Jun 2024 21:11

emir wrote:
13 May 2024 21:20
Hello,
how can I connect a module to a 3.3-volt board like Arduino Due or ESP boards, and do I need a logic level shifter for SPI or not?
Also what steps should I take for voltage levels UR and UA?
Regards
The Bosch CJ125 used on the Lambda Shields have 5V interfaces, why go through all that trouble instead of just use a 5V Arduino? If you need ESP32 connectivity it is easier to interface it to an Arduino than the Lambda Shield 2 to an ESP32.

Thank you.
Best Regards,
Christian Bylund
Bylund Automotive AB

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