Note: The CR1220 Coin Cell and Dual-band external Antenna are NOT pre-installed.
CM4 Nano is an embedded computer designed for industrial applications powered by Raspberry Pi Compute Module 4. It's designed to be more compatible with Raspberry Pi 4 Model B but with industrial applications enhanced.
It makes full use of the structural flexibility of CM4 to solve the heat dissipation problem of the CPU, wireless module, and PMU (Power Management Unit). The external dual-band antenna improves the wireless connection reliability and communication range, expanding the possible applications and capabilities.
The CM4 Nano can be configured into 8GB/4GB/2GB/1GB RAM and 32GB/16GB/8GB eMMC, 2.4/5.8GHz dual-band WiFi, and Bluetooth according to the different applications, and it comes with an external antenna. This model comes with 2GB RAM and 8GB of eMMC, and built-in wireless with an external antenna. For applications that require larger data storage, the user can always run the Operating System from the eMMC and store data using a microSD card. Yes, the microSD card can be used to expand the storage capacity if it is needed. Compared to the built-in eMMC, the microSD card offer a larger capacity, flexibility to choose and upgrade capacity, and it is more cost-effective.
The CM4 Nano comes with a built-in alarm buzzer, CR1220 coin cell battery-powered real-time clock (RTC), a true Gigabit Ethernet port (RJ45) with PoE function (requires additional PoE HAT), which is compatible with the official Raspberry Pi PoE HAT.
Note: CR1220 is NOT pre-installed due to shipping/courier restrictions. Manual installation of CR1220 is necessary.
The CSI and DSI interfaces of CM4 Nano are fully compatible with Raspberry Pi 4 Model B. The CSI supports Raspberry Pi 8MP and 12MP HQ camera modules. While the DSI port also supports the Raspberry Pi 7" touch display. The full-size HDMI port is capable of 4K HD video output. Besides the multimedia output, CM4 Nano also comes with 2 x USB3.0 ports and 1 x USB2.0 port for USB devices, for example, mouse, keyboard, joystick, or even USB stick. The USB 2.0 port can be used to update the system image in the CM4's eMMC.
One of the special features of CM4 Nano is the 40-pin GPIO headers. It supports a standard Raspberry Pi 40-pin expansion interface, the HAT (Hardware Attached of Top).
CM4 Nano can be powered via the DC Barrel Jack (5.5x2.1mm) supporting +12 to 18VDC. While the 5V pins at 40-pin headers can provide a maximum current of up to 2A, and the 3.3V pin can output a maximum current of 1.5A. These may support high-power expansion modules.
The dimension of the CM4 Nano PCB is 95 x 58 mm, slightly larger than the Raspberry Pi 4 Model B. The interface connectors (Ethernet, USB, HDMI, Power input, microSD card slot, etc) are arranged at the front and back of the enclosure, making easier cable management. A 103 x 62 x 5 mm aluminum heatsink provides excellent passive (fanless) cooling for the CPU, wireless module, and PMU (Power Management Unit), the whole system can work reliably in a high-temperature environment. Based on the real testing in the laboratory, the CM4 Nano can work reliably at the ambient temperature of -25ºC to 60ºC.
The 4 x M.5 screw holes at the bottom of the enclosure are reserved for mounting purposes. They will come in handy when the user needs to mount the CM4 Nano to other equipment. It also supports DIN rail mounting, but a separate DIN rail socket is needed.
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