# Raspberry Pi 4 Model B + Duet 3 6 HC **URL:** \ **Category:** General Discussion\ **Created:** [August 29, 2024, 2:19pm UTC](https://klipper.discourse.group/t/raspberry-pi-4-model-b-duet-3-6-hc/18534 "2024-08-29T14:19:49Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![rkutun](https://avatars.discourse-cdn.com/v4/letter/r/53a042/32.png) [@rkutun](https://klipper.discourse.group/u/rkutun)\ **Post date:** [August 29, 2024, 2:19pm UTC](https://klipper.discourse.group/t/raspberry-pi-4-model-b-duet-3-6-hc/18534/1 "2024-08-29T14:19:49Z")
Hello everyone, I have made the connections between the Raspberry Pi 4 Model B and the Duet 3 6HC board, but the serial port `/dev/ttyACM0` does not appear. Am I making the connections incorrectly? Can someone who is knowledgeable in this area help me? Because of this, I am getting the following error: “mcu ‘mcu’: Unable to connect Once the underlying issue is corrected, use the ‘FIRMWARE\_RESTART’ command to reset the firmware, reload the config, and restart the host software. Error configuring printer” ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [August 29, 2024, 2:49pm UTC](https://klipper.discourse.group/t/raspberry-pi-4-model-b-duet-3-6-hc/18534/2 "2024-08-29T14:49:25Z")
Please do not always delete the template. Stick to it. Please attach the klippy.log to your **next post**. ---
**Author:** ![rkutun](https://avatars.discourse-cdn.com/v4/letter/r/53a042/32.png) [@rkutun](https://klipper.discourse.group/u/rkutun)\ **Post date:** [September 2, 2024, 5:12am UTC](https://klipper.discourse.group/t/raspberry-pi-4-model-b-duet-3-6-hc/18534/3 "2024-09-02T05:12:29Z")
Can you share the connection diagram between Raspberry Pi and Duet 3 6HC with me? How should I do it? ---
**Author:** ![rkutun](https://avatars.discourse-cdn.com/v4/letter/r/53a042/32.png) [@rkutun](https://klipper.discourse.group/u/rkutun)\ **Post date:** [September 2, 2024, 8:23am UTC](https://klipper.discourse.group/t/raspberry-pi-4-model-b-duet-3-6-hc/18534/4 "2024-09-02T08:23:44Z")
I am using the Duet 3 6HC v1.01 motherboard. I want to control the Duet 3 6HC + 3HC boards through Klipper using a Raspberry Pi 4 Model B. Can you help me with the connection diagrams and make menuconfig configurations?" ---
**Author:** ![rkutun](https://avatars.discourse-cdn.com/v4/letter/r/53a042/32.png) [@rkutun](https://klipper.discourse.group/u/rkutun)\ **Post date:** [September 2, 2024, 8:24am UTC](https://klipper.discourse.group/t/raspberry-pi-4-model-b-duet-3-6-hc/18534/5 "2024-09-02T08:24:44Z")
Duet 3 6HC Wiring Diagram ![Duet 3 6 HC v1.01 Wiring Diagram](https://global.discourse-cdn.com/free1/uploads/klipper/original/2X/0/0e20cf68d9e2865d57f511afa198c96d4ad8fd69.jpeg) ---
**Author:** ![rkutun](https://avatars.discourse-cdn.com/v4/letter/r/53a042/32.png) [@rkutun](https://klipper.discourse.group/u/rkutun)\ **Post date:** [September 2, 2024, 10:01am UTC](https://klipper.discourse.group/t/raspberry-pi-4-model-b-duet-3-6-hc/18534/6 "2024-09-02T10:01:00Z")
@koconnor help please !!! ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [September 2, 2024, 10:12am UTC](https://klipper.discourse.group/t/raspberry-pi-4-model-b-duet-3-6-hc/18534/7 "2024-09-02T10:12:46Z")
You may have a look here: > [@Klipper Architecture / Ecosystem](https://klipper.discourse.group/t/klipper-architecture-ecosystem/6313): > > Klipper Architecture / Ecosystem Calling Klipper a 3D printer firmware is not complete to its full extent. In fact it is a 3D printing application with an associated ecosystem. The following overview shows how the different aspects interact. Only the red boxes is Klipper in its original sense, the other boxes are independent products forming the entire ecosystem. Klipper Host The core of the Klipper environment Typically running on a Single Board Computer (SBC), … And also here: > **[Klipper on Duet 3 Mainboard](https://forum.duet3d.com/topic/22890/klipper-on-duet-3-mainboard)** > > Hello everyone! You can install a klipper firmware on the duet 3 mainboard? How to flash any .bin file on the duet 3 mainboard? Please tell me. ---
**Author:** ![rkutun](https://avatars.discourse-cdn.com/v4/letter/r/53a042/32.png) [@rkutun](https://klipper.discourse.group/u/rkutun)\ **Post date:** [September 2, 2024, 10:16am UTC](https://klipper.discourse.group/t/raspberry-pi-4-model-b-duet-3-6-hc/18534/8 "2024-09-02T10:16:29Z")
Thanks @EddyMI3D I will review these. ---
**Author:** ![rkutun](https://avatars.discourse-cdn.com/v4/letter/r/53a042/32.png) [@rkutun](https://klipper.discourse.group/u/rkutun)\ **Post date:** [September 2, 2024, 10:37am UTC](https://klipper.discourse.group/t/raspberry-pi-4-model-b-duet-3-6-hc/18534/9 "2024-09-02T10:37:26Z")
I looked but couldn’t find anything about Raspberry and Duet 3 6HC connection cables. Do I need to connect it with TX and RX pins? Can someone who knows this help me? ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [September 2, 2024, 11:49am UTC](https://klipper.discourse.group/t/raspberry-pi-4-model-b-duet-3-6-hc/18534/10 "2024-09-02T11:49:36Z")
> [@rkutun](#): > > Raspberry and Duet 3 6HC connection cables A USB A to micro USB cable ---
**Author:** ![rkutun](https://avatars.discourse-cdn.com/v4/letter/r/53a042/32.png) [@rkutun](https://klipper.discourse.group/u/rkutun)\ **Post date:** [September 2, 2024, 11:58am UTC](https://klipper.discourse.group/t/raspberry-pi-4-model-b-duet-3-6-hc/18534/11 "2024-09-02T11:58:06Z")
@EddyMI3D Thank you very much, I solved it, as you said, it communicated with the MCU via USB and microUSB cable. ---
**Author:** ![rkutun](https://avatars.discourse-cdn.com/v4/letter/r/53a042/32.png) [@rkutun](https://klipper.discourse.group/u/rkutun)\ **Post date:** [September 2, 2024, 12:01pm UTC](https://klipper.discourse.group/t/raspberry-pi-4-model-b-duet-3-6-hc/18534/12 "2024-09-02T12:01:10Z")
![Ekran görüntüsü 2024-09-02 145853](https://global.discourse-cdn.com/free1/uploads/klipper/original/2X/5/525282b678e00b7abc582fd2c26087d0909a50c8.png) I have another issue that needs to be resolved now ☹ ---
**Author:** ![rkutun](https://avatars.discourse-cdn.com/v4/letter/r/53a042/32.png) [@rkutun](https://klipper.discourse.group/u/rkutun)\ **Post date:** [September 2, 2024, 12:15pm UTC](https://klipper.discourse.group/t/raspberry-pi-4-model-b-duet-3-6-hc/18534/13 "2024-09-02T12:15:34Z")
I solved this. If I have any other problems, I will write here again. Thank you all for everything. ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/klipper/original/1X/64419bf2aac6639e6ef5cef200dcd456b0a01ac3.png) [@system](https://klipper.discourse.group/u/system)\ **Post date:** [October 2, 2024, 10:15pm UTC](https://klipper.discourse.group/t/raspberry-pi-4-model-b-duet-3-6-hc/18534/14 "2024-10-02T22:15:42Z")
Closed on October 2, 2024, 10:15pm UTC This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.