All News | Boards | Chips | Devices | Software | Archive | About | Contact | Subscribe
Follow LinuxGizmos:
Twitter Facebook Pinterest RSS feed
*   get email updates   *

Raspberry Pi CM4 gateway offers multiple wireless options

Dec 14, 2021 — by Eric Brown 1,129 views

[Updated: Jan. 17] — TechDesign has launched an “Industrial IoT Gateway with Raspberry Pi CM4” built by KSH, with software help by Artisantech, equipped with 2x LAN, 4x USB, 2x COM, micro-HDMI, mini-PCIe, and an M.2 slot with optional 5G or NVMe.

TechDesign is taking orders for a wireless-oriented, 170 x 110 x 30mm gateway that runs Linux on a Raspberry Pi Compute Module 4. The Industrial IoT Gateway with Raspberry Pi CM4, also referred to as the WPC-632-Pi, has a 9-32VDC input and -20 to 75℃ operating range.

Industrial IoT Gateway with Raspberry Pi CM4 (TechDesign/Artisantech version)
(click image to enlarge)

As noted by the CNXSoft post that alerted us to the gateway, the manufacturer is KSH International, which has its own product page for the system, offered as two separate models: the Raspberry Pi CM4 5G IoT and Raspberry Pi CM4 Edge AIoT. Although we saw no specs listed, these appear to be slightly different than the TechDesign offering. KSH also provides the mainboard as a standalone SBC and manufactures a variety of other gateways based on the Raspberry Pi 4 and other Pi SBCs and Compute Modules, such as the RPi 4-based WPC-632-Pi 4.

As later explained by TechDesign, KSH and software integrator Artisantech Computer Engineering Co. Ltd are both TechDesign sister companies, as well as partners on the project. Artisantech has previously worked as a system integrator for Qnap on a joint project for an energy monitoring and management system. Adds TechDesign: “Both [KSH and Artisantech] are actually suppliers on our platform and have agreed to sell their solutions there under the Artisantech brand.”


The Raspberry Pi CM4 appears more on carrier boards than embedded systems, although some of those are available with enclosures. Other CM4-based industrial gateways include CompuLab’s IOT-GATE-RPi.

The Industrial IoT Gateway provides a Raspberry Pi CM4 with up to 8GB RAM and 32GB eMMC and optional WiFi/BT. The system is equipped with Gigabit Ethernet and 10/100 Fast Ethernet ports, as well as 2x USB 3.0, 2x USB 2.0, and a micro-HDMI port for up to 4Kp60. The RS-232/422/485 and RS-232/485 interfaces appear to use side-mounted DB9 ports. Terminal blocks provide DIO.

The KSH model shown below has a slightly different layout with only dual coastline USB ports and an antenna. Other specs may also be different.

KSH version of the gateway available as the 5G IoT or Edge AIoT (left) and KSH SBC version
(click images to enlarge)

The TechDesign version covered here offers considerable wireless expansion, starting with the optional WiFi/BT version of the CM4. You also get a USB 2.0-driven mini-PCIe slot with optional 4G LTE, NB-IoT, or LoRa modules.

There is a choice of one of two PCIe-driven M.2 slots: a B-key for an optional 5G module or an M-key for an optional NVMe SSD or AI accelerator module. A nano-SIM slot is also available. (KSH’s 5G IoT likely offers the M.2 B-key while its Edge AIoT probably has the M-key slot.)

The gateway provides optional 2-lane MIPI-CSI and internal SPI, I2C, and 2x PWM headers. There is also a watchdog, RTC with battery, a reset button, buzzer, and LEDs. A heatsink is standard and a fan is optional. The DC input is available via a wide-range terminal input or 12V jack.

Further information

No pricing or availability information was provided for the Industrial IoT Gateway with Raspberry Pi CM4 (WPC-632-Pi). However, it appears to be available for ordering on this TechDesign product page.

(advertise here)

Print Friendly, PDF & Email

Please comment here...