Activity Forums Questions & Troubleshooting Setup & Installation Serial connection Controllino with Raspberry Pi

  • Serial connection Controllino with Raspberry Pi

     gerd2 updated 3 years, 7 months ago 2 Members · 3 Posts
  • gerd2

    Member
    March 11, 2021 at 2:02 pm

    Hi,

    I intend to connect me Controllino Maxi Automation with a Raspberry Pi 4 Computer using Serial2 or Serial3.

    Is it possible to connect the TX and RX Pins directly without demageing my Raspi, or do I have to use a logic level shifter (3,3V / 5V) in between?

    The Controllino is sourced with 24VDC and the Raspi with 5VDC.

    I´m not sure which max levels are allowed at the TX and RX Pins.

    Any advice would be very much appriciated!

  • mr-controllino

    Administrator
    March 11, 2021 at 2:22 pm

    Hello Gerd,

    It is always better to use proper Level shifters. They are available on very small boards … can even be implemented in a cable.

    regards
    Marco

  • gerd2

    Member
    March 11, 2021 at 2:27 pm

    Thanks for your quick response, Marco.

    I´ll make it with level shifting.

    Best regards

    Gerd

Viewing 1 - 3 of 3 replies

Log in to reply.

Original Post
0 of 0 posts June 2018
Now