Carrier boards for Raspberry Pi CM4 modules are all over the place for routers, NAS, industrial gateways, and more. Here’s another one with the Minimal Carrier Board for Raspberry Pi Compute Module 4, or MinCab, that powers the RPi CM4 module via a USB Type-C port.
That’s about all it does, although you would also be able to access some GPIOs, 5V, 3.3V, and GND signals via pads on the carrier board. Specifically, eight GPIOs are accessible with IO14, IO15, IO2, IO3, IO4, IO12, IO13, and IO18. Ivan Kuleshov explains this can be useful for Smart Home systems for instance, but it could be anything that requires WiFI and/or Bluetooth connectivity, a powerful Linux capable processor (as opposed to something like ESP32), and a few I/Os.
The MinCab might be a good alternative to the upcoming (and delayed) Raspberry Pi 4 Model A for people wanting to use Broadcom BCM2711 processor in a more compact form factor, although to be honest the space-saving against a carrier board like Piunora is not that much, as you’ve got some ports at the cost of the system being thicker.
Uptime Lab does not have any information about the carrier board on its website at this time. It’s similar in concept, although admittedly much smaller (when the CM4 is not connected), to the open-source hardware Less-is-More (LiM) carrier board that also offers a USB-C port for power and two LED’s, as well as a MicroSD card slot for the latest version.
Jean-Luc Aufranc (CNXSoft)
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
Support CNX Software! Donate via PayPal or cryptocurrencies, become a Patron on Patreon, or buy review samplesSours: https://www.cnx-software.com/2021/08/10/mincab-smallest-raspberry-pi-cm4-carrier-board/
Mini Base Board for Compute Module 4
suitable for evaluating the Raspberry Pi CM4 or being integrated into end productsPowerful functions in a credit card sized body
|CM4 socket||suitable for all variants of Compute Module 4|
|Networking||Gigabit Ethernet RJ45 connector|
|M.2 M KEY, supports communication modules or NVME SSD|
|Connector||Raspberry Pi 40PIN GPIO header|
|USB||USB 2.0 Type A × 2, USB 2.0 via FFC connector × 2|
|Display||MIPI DSI display port (15pin 1.0mm FPC connector)|
|Camera||MIPI CSI-2 camera port × 2 (15pin 1.0mm FPC connector)|
|Video||HDMI port × 2 (including one port via FFC connector), supports 4K 30fps output|
|RTC||Real-time clock with battery socket and ability to wake Compute Module 4|
|Storage||MicroSD card socket for Compute Module 4 Lite (without eMMC) variants|
|Fan header||allows speed adjustment and measurement, 5V|
|Dimensions||85 × 56mm|
Connecting with Compute Module 4
standard CM4 socket and color-coded Raspberry Pi 40PIN GPIO header
suitable for Compute Module 4 Lite/eMMC series module
Compact, yet Complete
onboard multiple connectors including:
CSI/DSI/RTC/FAN/HDMI/USB/RJ45 Gigabit Ethernet/Micro SD Card Slot/M.2 Slot
What's On Board
- CM4 socket
suitable for all variants of Compute Module 4
- Power input/Programming
5V/2.5A power supply, or used for eMMC burning
MIPI DSI display port
for connecting cooling fan, allows speed adjustment and measurement
2x MIPI CSI camera ports
- HDMI0 connector
HDMI0 port, supports 4K 30fps output
- USB 2.0 ports
2x USB 2.0 ports, for connecting sorts of USB devices
- Gigabit Ethernet connector
Gigabit Ethernet RJ45 connector, with 10 / 100 / 1000M network support
- M.2 indicator
indicating the operating status of M.2 interface
- ACT indicator
indicating the operating status of Raspberry Pi
- PWR indicator
indicating the status of Raspberry Pi power supply
- BOOT selection
ON: CM4 would be booted from USB-C interface
OFF: CM4 would be booted from eMMC or Micro SD card
- 40PIN GPIO header
- Micro SD card slot
for connecting a Micro SD card with pre-burnt image (Lite variant ONLY)
- HDMI1 FFC connector
HDMI1 port, supports 4K 30fps output
- USB 2.0 FFC connector
can be connected through an adapter
USB HUB chip, expanding one USB port to 4x ports
- M.2 slot
supports sorts of NVME SSD, or communication modules with PCIE M.2 KEY-M interface
- RTC chip
allows RTC-related functions like wakeup, shutdown, reboot, and more
- RTC interrupt selection
PI-RUN: CM4 reboot on RTC interruption
GN-EN: CM4 shutdown on RTC interruption
D4: D4 pin is triggered on RTC interruption
fan controller, for speed adjustment / measurement
- RTC battery holder
supports CR1220 button cell
working with displays and cameras
working with an additional SSD
for reference only, CM4, displays, cameras, and SSD are NOT included.
Resources & Services
* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.
Compute Module 4 IO Board
Exposing every interface from Raspberry Pi Compute Module 4, the Compute Module 4 IO Board provides a development platform and reference base-board design for our most powerful Compute Module yet.
Introducing the Raspberry Pi Compute Module 4 and IO Board
- External power connector (+12V, +5V)
- 2 x full-size HDMI 2.0 connectors
- 2 x USB 2.0 connectors, with header for two additional connectors
- Gigabit Ethernet RJ45 with PoE support
- Micro USB socket for updating Compute Module 4
- MicroSD card socket for Compute Module 4 Lite (without eMMC) variants
- PCIe Gen 2 x1 socket
- Standard fan connector
- 2 x MIPI DSI display FPC connectors (22-pin 0.5 mm pitch cable)
- 2 x MIPI CSI-2 camera FPC connectors (22-pin 0.5 mm pitch cable)
- Standard Raspberry Pi HAT connectors
- Real-time clock with battery socket and ability to wake Compute Module 4
- Various jumpers to disable specific features, e.g. wireless connectivity, EEPROM writing
The Raspberry Pi Compute Module 4 IO Board has undergone extensive compliance testing and meets the standards required in many countries. You can find all compliance information and regional certificates at pip.raspberrypi.com.
If you are integrating the Compute Module 4 IO Board into a product and need assistance with compliance, the Raspberry Pi Integrator Programme can help: more information and contact details here.
The Adopted Trademarks HDMI, HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks or registered trademarks of HDMI Licensing Administrator, Inc. in the United States and other countries.
Compute Module 4 IO Board will remain in production until at least January 2028
Waveshare Raspberry Pi Compute Module 4 IO Board a Development Platform and Reference Base-Board Design for CM4 Without WiFi
The Compute Module 4 IO Board is a companion board for Raspberry Pi Compute Module 4 (supplied separately). It is designed for use both as a development system for Compute Module 4 and as an embedded board integrated into end products.
The IO board is designed to allow you to create systems quickly using off-theshelf parts such as HATs and PCIe cards, which might include NVMe, SATA, networking, or USB. The major user connectors are located along one side to make enclosures simple.
Compute Module 4 IO Board also provides an excellent way to prototype systems using the Compute Module 4.
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