AAEON SRG-CM4 is an IoT gateway based on the Raspberry Pi Compute Module 4 (CM4) with 1GB to 8GB of RAM and 8GB to 32GB of eMMC storage, all powered by the Broadcom BCM2711 quad-core Cortex-A72 SoC. The gateway features a modular chassis, maintaining the compact size and industrial-grade features typical of AAEON’s edge gateway products, making it ideal for various embedded applications.
In terms of connectivity, the SRG-CM4 offers two switchable serial ports supporting RS-232/422/485, with an optional isolated RS-485 port, CAN 2.0 A/B, and two isolated DI/DO. Additional interfaces include two Gigabit Ethernet RJ45 ports, two USB 2.0 ports, and an HDMI 1.4 video output. The device operates within a wide temperature range of -20°C to 70°C and supports a DC 9V to 36V power input, ensuring reliability in industrial environments.
We previously covered the reComputer R1025-10, a Raspberry Pi CM4-based DIN Rail industrial gateway with optional wireless modules, including 4G, LoRa, Zigbee, and Wi-Fi/BLE. Other Raspberry Pi CM4-based gateways we’ve featured include the WisGate Connect, the EDATEC ED-GWL2110 IP24-rated outdoor gateway, the Home Assistant Yellow automation gateway, and the iModGATE-AI for failure monitoring and predictive maintenance of IoT installations. Feel free to explore these products if you’re interested.
AAEON SRG-CM4 RISC gateway specification:
- SoM – Raspberry Pi Compute Module 4 (CM4)
- SoC – Broadcom BCM2711 Quad-Core Cortex-A72 (Armv8) 64-bit SoC @ 1.5 GHz
- Memory – Up to 8 GB onboard LPDDR4 RAM
- Storage – Optional 8GB/16GB/32GB eMMC 5.1 flash storage option
- Storage – microSD card slot for Raspberry Pi CM4 on the carrier board (Optional w/o eMMC)
- Display – 1x HDMI 1.4 up to 4K30; for SD card storage it is up to 1080p; Note: the block diagram mentions an HDMI 2.0 ReDriver…
- Networking
- 2x Gigabit Ethernet RJ45 ports
- Optional WiFi and Bluetooth (on CM4)
- USB
- 2x USB 2.0
- 1x USB 2.0 OTG
- 1x USB 2.0 pin header
- Serial port
- 2x switchable serial ports supporting RS-232/422/485
- Optional RS-485 port with isolation
- Debug port – 1x UART
- Security – TPM 2.0 (Optional)
- Expansion – Full-sized mini card for USB signal
- Additional features
- 2x DI or DO with isolation
- 2x CAN 2.0 A/B
- 1x RTC with 3V CR2032H Lithium battery
- 3x Programmable LED control
- Power LED indicator
- Software button
- Power and reset button
- Power
- Input – 9V ~ 36V DC-in via 2-pin 3.81mm Pitch Phoenix Connector
- Power consumption – 12.6W
- 1,311,814 Hours Mean time between failures (MTBF)
- Dimensions – 105 x 104.4 x 41 mm
- Weight – 490 grams
- Temperature range
- Operating: -20°C to 70°C
- Storage: -40°C to 80°C
- Humidity – 10% ~ 90% relative humidity, non-condensing
- Certifications – CE/FCC Class A
The SRG-CM4 supports Raspberry Pi OS and Debian 11, providing access to a wide range of open-source software packages, development tools, and libraries. This flexibility is ideal for developing industrial solutions in sectors like manufacturing. The device also offers both wall and optional DIN rail mounting options, allowing easy integration into existing factory or kiosk setups.
The company provides a 2-pin 3.81mm power terminal block with a lock (AWG 28~14 x 1) in the package, but no power adapter is included. However, a link to a compatible 40W adapter is available on the product page. The SRG-CM4 is available for purchase on the AAEON eShop for $217, where you can also find detailed specifications.
Sayantan Nandy, an electronics engineer with over four years of hands-on experience in PCB design, circuit development and power electronics, is proficient in EAGLE CAD, Ki-Cad, and Altium. He has a proven track record of delivering efficient and effective systems. His expertise extends from R&D, and prototyping to production support, making him a valuable asset to any engineering team.
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