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Raspberry Pi CM4 Cluster Mini-ITX board 6 RPI CM4 supported

DWM22051402

Raspberry Pi cluster board a standard size mini-ITX board to be put in a case with up to 6 RPI CM4 Compute Modules.

$195.00
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Description

Raspberry Pi cluster board a standard size mini-ITX board to be put in a case with up to 6 RPI CM4 Compute Modules.

Features

6 RPI CM4 supported

1 Gbps RJ45 x2

Onboard ON/OFF and Reset button

PC Case front panel header

12V FAN Header x3

DC 19v~24V or ATX 12V

For every CM4:

a. PCIe Gen2 x1 (M.2 M-key) (Support NVME 2280 SSD)

b. Micro SD Card socket

c. 5V FAN Header

d. Micro USB 2.0

Only for 1st CM4:

a. USB Host A 2.0 x2

b. USB Host 2.54 4-pins x2

c. HDMI 2.0 x1

d. HDMI 1.4a x1

e. 3-PIN ARGB (5 V) (GPIO18 Support WS2812B Individually Addressable RGB (ARGB) LED )

Package:

1. 1pcs Raspberry Pi CM4 Cluster Mini-ITX board.

2. 1pcs 100W Power Adapter (UL/TUV/CCC/PSE/EK)

Note:  Raspberry Pi CM4 board are not included

Dimension:

170mm x 170mm x 21mm (Mini-ITX)

Application

Self-hosted: Host cloud applications locally or at the edge Learning

Learning: Kubernetes, Docker, Serverless 

Development: Build cloud-native and CI/CD for ARM edge infrastructure 

Network-Attached Storage or Distributed Storage System :6 x ARM NAS node or CEPH node

Definision

http://dwmzone.com/blog/wp-content/uploads/2022/10/raspberry-pi-cm4-cluster-mini-itx-board-IO-definision.jpg

FAQ

What can I do with RPi CM4 ITX Cluster ?

Home server (homelab) and cloud apps hosting.

Learn Kubernetes, Docker Swarm, Serverless, Microservices on bare metal

Cloud-native apps testing environment

Learn concepts of distributed Machine Learning apps

Prototype and learn cluster applications, parallel computing, and distributed computing concepts

Host K8S, K3S, Minecraft, Plex, Owncloud, Nextcloud, Seafile, Minio, Tensorflow

Which Raspberry Pi models are compatible ?

RPi CM4 ITX Cluster supports all Raspberry Pi CM4 with and without eMMC.

Does Raspberry Pi include compute modules ?

No, the product only have cluster motherboard and power adapter.

From where RPi CM4 ITX Cluster boots OS ?

You can boot the OS either from eMMC, SD Card or netboot.

Does each node get its own IP address?

Yes

How the compute modulus communicates with each other ?

The nodes interconnected with the onboard 1 Gbps switch. And, each node has 1Gbps speed. 

Do all the slots need to be filled in ?

The cluster works with any amount of nodes. You can start with a couple of nodes and scale when needed.

Can I flash compute modules through the board ?

Yes, you can flash a compute module using a Micro USB cable.

How do the NIC, Ethernet, USB, HDMI, and audio ports work ?

There are 2 USB-A an 2 USB 2.54 Pins on the board.They only connect to CM4 1$. The two HDMI ports are also the same.

NIC – There is an 8-port gigabit switch on the board. Each port goes to each node plus one uplink. Two RJ45 out are from the switch. You can use them connect to other network device without extern switch.

Can RPi CM4 ITX Cluster function from either an ATX power supply 12V ?

Yes.

How to assemble

  • Attach the CM4 to the board by simply aligning it with the two connectors on the IO board, then give it a good squeeze. It’ll crunch into place and you should be set.

How to build your own cluster and manage the cluster via ansible.

Fit for CM4 Lite version

Note: The latest Raspberry Pi OS does not contain pi user and it may not need to add dtoverlay=dwc2,dr_mode=host to config.txt file.

 

  • Assume you are using the old version (Raspberry Pi OS 2021-11-08)
  • CM4 Lite means Raspberry Pi Computer module come without a EMMC storage onboard. That means you need purchase MicroSD card(TF card).
  • Steps:
  1. Download the latest Raspberry Pi OS 64bit image from: https://downloads.raspberrypi.org/raspios_arm64/images/raspios_arm64-2021-11-08/
  2. Unzip it and flash the *.img file to TF card by using Etcher tool, which can be downloaded via https://www.balena.io/etcher/
  3. Modify config.txt file in TF card and adding dtoverlay=dwc2,dr_mode=host to it and save it. (Do not need to execute this step if your using the latest version)
 Before we unplug, now that your CM4 is fully flashed and ready to go, you’ll be surprised to learn that the USB Ports are disabled by default. Yes, really. Remember, this is a board designed to be embedded elsewhere and not for consumer-level off-the-shelf use.

In the “boot” folder, find the config.txt and add the following:

dtoverlay=dwc2,dr_mode=host

This will turn on the USB ports when you boot up, but if you accidentally keep the micro USB in, you will run into issues. Before you begin your first boot, make sure everything is unplugged. Boot and then plug in your mouse or keyboard.

If you’re like me and couldn’t get a wi-fi version, this is where you’ll plug in your dongle or ethernet cable.

  1. Create a new file named ssh on TF card /boot folder
  2. Insert TF card into card slot on Super6C board.
  3. Connect the power supply to DC Socket or Using ATX Power supply. (Max. 24V/6.15A)
  4. Connect Full-sized HDMI cable to super6C, Other head connect to your TV or Monitor.
  5. Connect Keyboard and mouse to USB2.0 port on board.
  6. Connect Ethernet cable to ETH1 to your Router.
  7. Press pwr buttom to booting up the CM4.
  8. Login to Raspberry Pi via username: pi password: raspberry
  9. Make sure your OS can access internet.
  10. Install ansible via following command: pip3 install ansible --user
  11. Configure environment of PATH by editing sudo nano /home/pi/.bashrc

How to Flash image to eMMC on CM4 module.

  • Flashing the Compute Module eMMC The Compute Module has an on-board eMMC device connected to the primary SD card interface. This guide explains how to write data to the eMMC storage using a Compute Module IO board.

Please also read the section in the Compute Module Datasheets:compute-module-datasheets-and-schematic

Compute Module 4

Ensure the Compute Module is fitted correctly installed on the IO board. It should lie flat on the IO board.

Make sure that nRPBOOT which is on J2 (disable eMMC Boot) on the IO board jumper is fitted

Use a micro USB cable to connect the micro USB slave port MCRO_USB on IO board to the host device.

Do not power up yet.

For Windows Users

Under Windows, an installer is available to install the required drivers and boot tool automatically. Alternatively, a user can compile and run it using Cygwin and/or install the drivers manually.

  • Windows Installer

For those who just want to enable the Compute Module eMMC as a mass storage device under Windows, the stand-alone installer is the recommended option. This installer has been tested on Windows 10 32-bit and 64-bit, and Windows XP 32-bit.

Please ensure you are not writing to any USB devices whilst the installer is running.

Download and run the Windows installer to install the drivers and boot tool.

Plug your host PC USB into the USB SLAVE port, making sure you have setup the board as described above.

Apply power to the board; Windows should now find the hardware and install the driver.

Once the driver installation is complete, run the RPiBoot.exe tool that was previously installed.

After a few seconds, the Compute Module eMMC will pop up under Windows as a disk (USB mass storage device).

Building rpiboot on your host system (Cygwin/Linux)

We will be using Git to get the rpiboot source code, so ensure Git is installed. In Cygwin, use the Cygwin installer. On a Raspberry Pi or other Debian-based Linux machine, use the following command:

sudo apt update 
sudo apt upgrade -y 
sudo apt install git 

Git may produce an error if the date is not set correctly. On a Raspberry Pi, enter the following to correct this:

sudo date MMDDhhmm

where MM is the month, DD is the date, and hh and mm are hours and minutes respectively.

Clone the usbboot tool repository:

git clone --depth=1 https://github.com/raspberrypi/usbboot
cd usbboot

libusb must be installed. If you are using Cygwin, please make sure libusb is installed as previously described. On Raspberry Pi OS or other Debian-based Linux, enter the following command:

sudo apt install libusb-1.0-0-dev

Now build and install the usbboot tool:

make 

Run the usbboot tool and it will wait for a connection:

sudo ./rpiboot

Now plug the host machine into the Compute Module IO board USB slave port and power the CMIO board on. The rpiboot tool will discover the Compute Module and send boot code to allow access to the eMMC.

For more information run

./rpiboot -h

Writing to the eMMC (Windows)

After rpiboot completes, a new USB mass storage drive will appear in Windows. We recommend using Raspberry Pi Imager to write images to the drive.

Make sure J2 (nRPBOOT) is set to the disabled position and/or nothing is plugged into the USB slave port. Power cycling the IO board should now result in the Compute Module booting from eMMC.

Writing to the eMMC (Linux)

After rpiboot completes, you will see a new device appear; this is commonly /dev/sda on a Raspberry Pi but it could be another location such as /dev/sdb, so check in /dev/ or run lsblk before running rpiboot so you can see what changes.

You now need to write a raw OS image (such as Raspberry Pi OS) to the device. Note the following command may take some time to complete, depending on the size of the image: (Change /dev/sdX to the appropriate device.)

sudo dd if=raw_os_image_of_your_choice.img of=/dev/sdX bs=4MiB

Once the image has been written, unplug and re-plug the USB; you should see two partitions appear (for Raspberry Pi OS) in /dev. In total, you should see something similar to this:

/dev/sdX    <-  Device 
/dev/sdX1   <-  First partition (FAT)
/dev/sdX2   <-  Second partition(Linux filesystem)

The /dev/sdX1 and /dev/sdX2 partitions can now be mounted normally.

Make sure J2 (nRPBOOT) is set to the disabled position and/or nothing is plugged into the USB slave port. Power cycling the IO board should now result in the Compute Module booting from eMMC. 

Compute Module 4 Bootloader

The default bootloader configuration on CM4 is designed to support bring up and development on a Compute Module 4 IO board and the software version flashed at manufacture may be older than the latest release.

  • For final products please consider:

  • Selecting and verifying a specific bootloader release. The version in the usbboot repo is always a recent stable release.

  • Configuring the boot device (e.g. network boot). See BOOT_ORDER section in the bootloader configuration guide.

  • Enabling hardware write protection on the bootloader EEPROM to ensure that the bootloader can’t be modified on remote/inaccessible products.

N.B. The Compute Module 4 ROM never runs recovery.bin from SD/EMMC and the rpi-eeprom-update service is not enabled by default. This is necessary because the EMMC is not removable and an invalid recovery.bin file would prevent the system from booting. This can be overridden and used with self-update mode where the bootloader can be updated from USB MSD or Network boot. However, self-update mode is not an atomic update and therefore not safe in the event of a power failure whilst the EEPROM was being updated.

## Modifying the bootloader configuration

  • To modify the CM4 bootloader configuration:
cd usbboot/recovery

Replace pieeprom.original.bin if a specific bootloader release is required.

Edit the default boot.conf bootloader configuration file. Typically, at least the BOOT_ORDER must be updated:

  • For network boot BOOT_ORDER=0xf2

  • For SD/EMMC boot BOOT_ORDER=0xf1

  • For USB boot failing over to EMMC BOOT_ORDER=0xf15

Run ./update-pieeprom.sh to update the EEPROM image pieeprom.bin image file.

If EEPROM write protection is required then edit config.txt and add eeprom_write_protect=1. Hardware write-protection must be enabled via software and then locked by pulling the EEPROM_nWP pin low.

Run ../rpiboot -d . to update the bootloader using the updated EEPROM image pieeprom.bin

The pieeprom.bin file is now ready to be flashed to the Compute Module 4.

Flashing the bootloader EEPROM - Compute Module 4

To flash the bootloader EEPROM follow the same hardware setup as for flashing the EMMC but also ensure EEPROM_nWP is NOT pulled low. Once complete EEPROM_nWP may be pulled low again.

# Writes recovery/pieeprom.bin to the bootloader EEPROM.       

./rpiboot -d recovery

Useful Link:

RPi CM4 ITX Cluster

Compute Module 4 Boards and Projects

RPi CM4 ITX Cluster IO Spec v1.0

Main Board Back IO

Test EVB board CM4 Cluster Mini-ITX board #425

GitHub - DeskPi-Team/super6c: Super6c stands for Super 6 CM4 Cluster.

Six computers in one: Mini ITX Clusterboard

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Raspberry Pi CM4 Cluster Mini-ITX board 6 RPI CM4 supported

Raspberry Pi cluster board a standard size mini-ITX board to be put in a case with up to 6 RPI CM4 Compute Modules.

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