CatsPi Industrial Lite
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CatsPi Industrial Lite RPi CM4 carrier board features GbE, RS485, Watchdog MCU

We’ve seen a fair deal of Raspberry Pi CM4 carrier boards, and here’s another one courtesy of QwaveSystems with CatsPi Industrial Lite board following Raspberry Pi SBC form factor/dimensions, and equipped with Gigabit Ethernet, RS485, USB ports, as well as a watchdog MCU among other interfaces and features. Contrary to what the name implies, CatsPi Industrial Lite only works with Raspberry Pi CM4 with eMMC flash, but not the CM4 Lite module since there’s no MicroSD card on the baseboard. It’s not the first Raspberry Pi Compute Module 4 carrier board with RS485, however, as we previously covered CM Hunter also including CAN and 1-wire interfaces, but QwaveSystems’ solution is more compact and mostly mechanically compatible with Raspberry Pi model B SBC’s. CatsPi Industrial Lite board specifications: Compatible SoMs – Raspberry Pi CM4 with eMMC flash only Video Output – Micro HDMI port Connectivity – Gigabit Ethernet, optional 802.11b/g/n/ac WiFi […]

CM4 IoT Carrier Board Mini
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$30 Raspberry Pi CM4 IoT Router Carrier Board Mini offers Dual Gigabit Ethernet

We’ve recently written about Seeed Studio’s “Dual Gigabit Ethernet Carrier Board for Raspberry Pi Compute Module 4” that offers dual Gigabit Ethernet, and two USB 3.0 ports for software router applications, but it can also be used for IoT, Smart Home, and camera projects, as well as HTPC maker thanks to micro HDMI output and MIPI DSI/CSI connector. It is sold for an affordable $45, exceeding the Raspberry Pi CM4 module. But if all you want to do is get a dual Gigabit Ethernet WiFi router or IoT gateway, DFRobot has now introduced a more compact and cheaper carrier board for Raspberry Pi CM4: “Compute Module 4 IoT Router Carrier Board Mini“. CM4 IoT Router Board Mini specifications: Compatible Module – Raspberry Pi Compute Module 4 / 4 Lite with Broadcom BCM2711 quad-core Cortex-A72 processor, up to 8GB RAM, up to 32GB flash, optional 802.11b/g/n/ac WiFi 5 and Bluetooth 5.0 […]

ArmSoM RK3588 AIModule7 NVIDIA Jetson Nano-compatible SOM
Onlogic Raspberry-Pi CM4 mini PC Dual GbE
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Onlogic industrial Raspberry Pi CM4 based mini PC to offer dual GbE, USB 3.1, M.2 SATA socket

Yesterday, we covered two Raspberry Pi CM4 carrier boards with dual Ethernet ports, including one from Seeed Studio with dual Gigabit Ethernet and USB 3.1 ports, and another from MCUZone with Gigabit + Fast Ethernet ports, USB 2.0 ports, plus a 4G LTE modem. But Onlogic will soon add another option with a complete Raspberry Pi CM4 based industrial mini PC with dual Gigabit Ethernet, teased as “One Tough Pi”, as well as USB 3.2/2.0 ports, M.2 SATA storage, and more. Onlogic “One Tough Pi” mini PC preliminary specifications: SoM – Raspberry Pi CM4 module with  up to 8 GB LPDDR4 memory, 32 GB eMMC flash storage Storage –  M.2 2280 SATA SSD support Video & audio output – 1x Micro HDMI port up to 4Kp60 Connectivity – 2x Gigabit Ethernet ports USB – 3x USB ports include 1x USB 3.2 Gen 1 port, and 2x USB 2.0 ports; 1x […]

Raspberry Pi CM4 Dual Ethernet
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Raspberry Pi CM4 boards offer dual Ethernet, 4G LTE

Since the launch of Raspberry Pi CM4 and CM4Lite systems-on-module last October, we’ve seen carrier boards bring their own set of features including industrial communication interfaces, a stereoscopic camera, four SATA ports to build a NAS, a DIN-rail based industrial controller, and more. But so far, I have not seen a Raspberry Pi CM4 carrier board with dual Ethernet ports. Seeed Studio’s “Dual Gigabit Ethernet Carrier Board for Raspberry Pi Compute Module 4” was brought to our attention this morning, but there’s another one with 4G LTE connectivity, Fast+Gigabit Ethernet ports, and extra I/Os courtesy of MCUZone’s CM4-4G IO board. Let’s have a look at both of them. Dual Gigabit Ethernet Carrier Board for Raspberry Pi Compute Module 4 Specifications: Supported SoMs – Raspberry Pi CM4 and CM4Lite with up to 8GB RAM, 32GB eMMC flash, optional WiFi & Bluetooth Storage – MicroSD card slot to load OS on CM4Lite […]

Raspberry Pi Pico Reset Button Soldered
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A neat way to add a reset button to Raspberry Pi Pico

The Raspberry Pi Pico is a nice little board, but if you program in C language, you’d need to disconnect the micro USB cable each time you’d like to flash the UF2 firmware. That’s not convenient and could damage your board over time.  The Raspberry Pi Foundation even decided to write a blog post explaining how to add a reset button to your Raspberry Pi Pico using a breadboard circuit. Here’s what it looks like. That works but you may want to use that breadboard for another circuit, so the reset button takes space. Another solution is to program with a Raspberry Pi board and use SWD mode to upload code using the debug port, instead of using mass storage (BOOTSEL) mode. I’ve also found out that most baseboards for the Pico board will include a reset button. But this morning, I’ve come across another solution that looks pretty neat. […]

Raspberry Pi Compute Module 4 industrial carrier board
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Raspberry Pi Compute Module 4 industrial carrier board supports M.2 NVMe SSD, 4G LTE modem

Since the Raspberry Pi Compute Module 4 launch last fall, we’ve seen several interesting carrier boards for the system-on-module including Wiretrustee to build a NAS with up to four SATA drives, the compact, Arduino-sized Piunora board that also include an M.2 socket, or Over:Board mini-ITX carrier board. Oratek brings another one specially designed for industrial use cases with TOFU Raspberry Pi Compute Module 4 carrier board offering wide DC input, Gigabit Ethernet with PoE, M.2 NVMe SSD or 4G LTE modem support, among many other features. Specifications: Raspberry Pi Compute Module 4 socket Storage NVMe SSD via M.2 2242 Key B socket (See Expansion section) MicroSD card slot Video Output HDMI 2.0 port up to 4Kp60 MIPI DSI connector for Raspberry Pi LCD display Camera – 1x MIPI CSI connector for Raspberry Pi camera Connectivity Gigabit Ethernet port with PoE Optional WiFI 5 and Bluetooth 5.0 on Raspberry Pi CM4 […]

Rockchip RK3568, RK3588 and Intel x86 SBCs and SoMs in 2025
Wiretrustee SATA board Raspberry Pi Compute Module 4
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Build a Raspberry Pi CM4 4-Bay NAS with Wiretrustee Carrier board

Broadcom BCM2711 processor comes with a PCIe interface that is used for the USB ports on the Raspberry Pi 4 SBC, but that is exposed through the board-to-board connectors of Raspberry Pi Compute Module 4, aka Raspberry Pi CM4, and allows all sort of designs. So far we’ve mostly seen this PCIe interface used for M.2 expansion slots on devices ranging from industrial computers to carrier board such as Piunora or Gumstix Raspberry Pi CM4 development board. But Wiretrustee had a different idea and designed carrier board with Marvell 88SE9215 PCIe to SATA controller and offering four SATA connectors to build a 4-bay NAS with Raspberry Pi CM4 module. Wiretrustee carrier board specifications: Supported SoM – Raspberry Pi Compute Module 4 and 4 Lite Storage 4x SATA 2.0 via Marvell 88SE9215 (PCIe 2.0 x1 to 4 6Gb/s SATA ports, no HW RAID) chip tested at a write speed of ~220MB/s […]

Over-board Raspberry Pi Compute Mobule 4 mini-ITX carrier board
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Raspberry Pi 4 Mini-ITX carrier board. Meet Over:Board (Crowdfunding)

While the Raspberry Pi 4 SBC is popular for its small form factor, affordable hardware, and good software support, the Raspberry Pi Compute Module 4 offers more flexibility and allows makers and companies to design their own hardware matching their requirements, while still leveraging the existing software support. We’ve already seen a mini-ITX carrier board for the Raspberry Pi 4, namely the upcoming Turing Pi 2. However, the board has very specific use cases in mind since it’s a cluster board designed for four Raspberry Pi Compute Modules 4. But British engineer Ross Nicholls has designed Over:Board carrier board for Raspberry Pi Compute Module 4 for most traditional use cases, in essence, designing what amounts to a Raspberry Pi 4 mini-ITX motherboard with SATA, PCIe, etc. Over:Board specifications: Compatible SoM’s –  Raspberry Pi CM4 or CM4Lite with Broadcom BCM2711 quad-core Cortex-A72 processor, up to 8GB RAM, up to 32GB storage. […]

Boardcon CM3588 Rockchip RK3588 System-on-Module designed for AI and IoT applications