HummingBoard CBi Quick Start Guide

Revision and Notes


The following quick start guide provides background information about the HummingBoard CBi product which use the i.MX6 System on module.

The guide will give a technical overview about the product and by the end of it you should be able to boot an operating system and begin testing your application.

Hardware Setup

Product Specifications

SOM Model

NXP i.MX6 based Solo to Quad Core SOM


i.MX6 Solo – Quad core ARM Cortex A9 up to 800Mhz

Memory & Storage

Up to 2GB DDR3


uSD, eMMC (8GB), M.2 (2242)


1 x RJ45


1 x CAN bus


1 x RS485


4 x USB 2.0


Mini PCIe




SIM card slot








1 x Reset button


1 x Configurable push button


3 x LED indicators




IR reciver

OS Support



102mm x 69mm


7V – 36V wide range


Metal Enclosure



Supported with i.MX6 SOM. For more detailed information about our SOM-i.MX6 series please visit this user manual : i.MX6 SOM Hardware User Manual .


Block Diagram

The following figure describes the Hummingboard CBi Block Diagram.


Visual features overview

Please see below the features overview of the connector side of the HummingBoard CBi.

HummingBoard CBi Top View

Print side connector overview of the HummingBoard CBi.

HummingBoard CBi Bottom View

Software Setup

Cable setup and prerequisites

Here is what you will need to power up the board:

  • Linux or Windows PC

  • HummingBoard CBi with SOM

  • 12V Power adapter (HummingBoard CBi has wide range input of 9V-36V, it is recommended to use 12V power adapter)

  • USB to UART cable

  • IP router or IP switch

Booting form an SD card

On the HummingBoard CBi it is possible to boot from different media.

For Booting from an SD card, jumpers need to be setup at J5005 as follows:

Before you set the boot jumpers, please refer to HummingBoard Edge/Gate Boot Jumpers for more information about J5005.

Once you setup the jumpers, you can apply the following for booting from an SD card.


1. Downloading the Debian image

Download the Debian image by running the following command on your Linux/Windows PC:


2. Writing the image to the SD card

Use the following commands for writing the image to an SD card:

xz -dc sr-imx6-debian-bullseye-20220712-cli-sdhc.img.xz | dd of=/dev/sdX bs=4M conv=fsync

Note: Plug a micro SD into your Linux PC, the following assumes that the micro SD is added as /dev/sdX and all it’s partitions are unmounted.

3. SD card insertion

Please Insert the SD card into your device.

4. Power connection

Connect your power adaptor to the DC jack, and then connect the adaptor to mains supply.

5. Serial connection

Please connect the UART cable to the pins on connector J25 as shown in the below picture, then you can refer to Serial Connection for installing necessary serial connection software in Linux/Windows.

For more information about J25 connector, please refer to HummingBoard Gate/Edge UART console .

Once you installed the necessary serial connection software, please run the following:

setenv som_rev 'V15'; saveenv; boot

And you should be able to see the following:

  • In order to be able to log in , please insert “debian” as a username and password as follows:


CanBUS and RS485 Support

Initial Setup

HummingBoard CBi can use the CAN-Bus and RS485 only if booted with the appropriate device-tree. From U-Boot console, interrupt boot by pressing any key during the Hit any key to stop autoboot prompt. Then permanently choose the cbi device-tree variant:

Hit any key to stop autoboot: 0 => setenv is_cbi 1 => saveenv => reset

Use the following commands in order to keep your system up-to-date:

apt-get update apt-get upgrade reboot

CanBUS Enable

1. Download the compressed zip file:

sudo wget -O /tmp/

2. Unzip the file:

unzip -o /tmp/ -d /boot/dtbs/5.10.0-8-armmp/

3. Restart your device:


RS485 Enable

1. Add a support for rs485conf and compile an exec file by runnig the following:

git clone cd rs485conf make

Before you run the above, please install some helping commands by running:

apt-get install make gcc git

2. Copy the output of the exec file bu running:

cp rs485conf /usr/bin/

3. Add an execute permission to the file:

chmod +x /usr/bin/rs485conf

Install to eMMC

  • You can follow this document Install to eMMC to install debian to an eMMC device.

More Features


  • Please check you Ethernet connection.

  • Use the following commands in order to keep your system up-to-date:

apt-get update apt-get upgrade reboot
  • For more detailed information, please refer to i.MX6 Debian .


An example for connecting to WiFi using wpa_supplicant:

1. To bring a WiFi interface up, run the following :

ifconfig wlan0 up

To discover your wireless network interface name, see Network Interfaces.

2. Install the wpa_supplicant package:

apt-get install wpasupplicant

3. Edit network interfaces file :

At the bottom of the file, add the following lines to allow wlan as a network connection:

cat <<EOF > /etc/network/interfaces.d/wlan0 allow-hotplug wlan0 iface wlan0 inet dhcp wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf iface default inet dhcp EOF

4. Create a configuration file with the relevant ssid:

cat <<EOF > /etc/wpa_supplicant/wpa_supplicant.conf ctrl_interface=/run/wpa_supplicant update_config=1 network={ ssid="MYSSID" psk="passphrase" } EOF

Check your personal ssids by running : ‘iw dev wlan0 scan’

5. Make sure it works:

Restart your device and it should connect to the wireless network. If it doesn't, repeat above steps or get help from an adult.


1. For showing all Bluetooth devices, run the following:

apt-get install bluez hciconfig -a

2. Choose a device, and turn it on:

hciconfig hci0 up

3. Set up the Bluetooth name:

hciconfig hci0 name 'SolidRun_Ble'

4. Make your Bluetooth detectable by other devices:

hciconfig hci0 piscan

5. If you want to connect to other devices:

  • Start by scanning for other Bluetooth devices:

hcitool scan
  • Choose a MAC address and connect :

rfcomm connect 0 $MAC 10 &
  • You can check the communication between the devices by writing :

l2ping -c 4 $MAC


Cellular Modem

The cellular modem is a more fully featured extension of which contains a cellular module with additional hardware interfaces and a SIM card slot.

You can connect your cellular modem to the mPCIe, and insert a SIM card.

GPIO pins Control

In order to be able to control the GPIO pins, please refer to HummingBoard Edge/Gate/CBi GPIO Pins Control .

CanBUS and RS485 Test

For testing your CANBus and RS-485 interfaces, please refer to HummingBoard CBi RS485 and CAN bus .

List Of Supported OS






i.MX6 Debian


Yocto for i.MX6


i.MX6 Archlinux


XBian for i.MX6


Build U-Boot & Kernel from sources



  File Modified

ZIP Archive HummingBoard2

Dec 26, 2021 by SolidRun

ZIP Archive HummingBoard2

Dec 26, 2021 by SolidRun

ZIP Archive

Dec 26, 2021 by SolidRun

ZIP Archive

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ZIP Archive HummingBoard2 PCB parts assembly Rev

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PDF File HummingBoard2 Schematics.pdf

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