Overview
The Waveshare Nano Base Board (B) is a compact carrier board, technically a compact sized IO board designed for the Raspberry Pi Compute Module 4 (CM4) with dimensions matching the CM4 (56mm x 41mm) boards.
Equipped with essential interfaces, the board features a 40-pin GPIO header compatible with Raspberry Pi modules. A USB 2.0 Type-A port provides connectivity for peripherals like keyboards, mice, and storage devices, while a MIPI CSI-2 and MIPI DSI connectors allows for easy camera and display integration respectively, both featuring a 15-pin 1.0mm FPC connectors. The board also supports video output through a Mini HDMI port with resolutions up to 4K at 30fps. Additionally, a 3.5mm audio jack is provided for audio applications.
For storage, the board includes a MicroSD card slot, making it ideal for CM4 Lite models without onboard eMMC storage.
You can power the board with a 5V DC input via a USB Type-C connector. It has an Onboard LED indicators (PWR and ACT) which provide quick visual feedback on power and activity status. Additionally, the boot selection switch enhances functionality, allowing users to toggle between download and normal operation modes.
The Nano Base Board (B) is a reliable, cost-effective solution for developers and engineers looking to deploy the Raspberry Pi Compute Module 4 in compact, performance-driven applications.
Features & Specification
Features and specification for Nano Base Board B.
| CM4 Socket | Compatible with all models of the Compute Module 4 |
|---|---|
| Networking | Gigabit Ethernet RJ45 connector |
| Connector | Raspberry Pi 40-pin GPIO header × 1 |
| USB | USB 2.0 Type-A connector × 1 |
| Display | MIPI DSI port × 1 (15-pin 1.0mm FPC connector) |
| Camera | MIPI CSI-2 port × 1 (15-pin 1.0mm FPC connector) |
| Video Output | Mini HDMI port × 1, supports 4K 30fps output |
| Audio Output | 3.5mm jack |
| Storage | Micro SD card socket for Compute Module 4 Lite (without eMMC) variants |
| Power Input | 5V via USB Type-C |
| Dimensions | 56mm × 41mm |
| User Button | Connected to GPIO21 |
| BOOT Switch | ON: Routes USB to Type-C interface for download mode OFF: Routes USB to Type-A interface for normal boot |
Parts & Pinout
Parts and pinouts for Waveshare Nano Base Board B.
| 1 | CM4 Socket | Standard CM4 socket for all models of the Raspberry Pi Compute Module 4 |
|---|---|---|
| 2 | Storage | Micro SD card slot for CM4 Lite models (without onboard eMMC) |
| 3 | GPIO Header | 40-pin GPIO header for attaching HATs and peripherals |
| 4 | Ethernet Port | Gigabit Ethernet port (RJ45 connector) |
| 5 | USB C Port | 5V via USB Type-C |
| 6 | Audio Jack | 3.5mm jack for audio connectivity |
| 7 | User Button | Connected to GPIO21, programmable for custom actions |
| 8 | USB Port | USB 2.0 Type-A port × 1 |
| 9 | CSI Connector | MIPI CSI-2 connector (15-pin 1.0mm FPC connector) |
| 10 | DSI Connector | MIPI DSI connector (15-pin 1.0mm FPC connector) |
| 11 | MP1685 | |
| 12 | Mini HDMI | Mini HDMI port, supports up to 4K at 30fps |
| 13 | BOOT Switch | ON: Routes USB to Type-C for download mode OFF: Routes USB to Type-A for normal boot |
Compare Nano Base Board A, B and C
Following table shows the difference between Nano Base Board A, B and C.
| Feature | Nano Base Board A | Nano Base Board B | Nano Base Board C |
|---|---|---|---|
| USB Ports | 1 × USB 2.0 Type-A | 1 × USB 2.0 Type-A | 1 × USB 2.0 Type-A |
| Mini HDMI Port | No | Yes (4K 30fps) | Yes (4K 30fps) |
| MIPI DSI Port | Yes | Yes | Yes |
| Camera Module | MIPI CSI-2 port | MIPI CSI-2 port | IMX219-D160 onboard (8MP, 160° FOV) |
| GPIO Header | 1 × 40-pin | 1 × 40-pin | 1 × 40-pin |
| Gigabit Ethernet | No | Yes | No |
| Audio Output | No | Yes (3.5mm audio jack) | No |
| Storage Slot | Micro SD card slot | Micro SD card slot | Micro SD card slot |
| User Button | No | Yes (GPIO21) | Yes (GPIO21) |
| BOOT Switch | Yes | Yes | Yes |
| LED Indicators | Power (PWR), Activity (ACT) | Power (PWR), Activity (ACT) | Power (PWR), Activity (ACT) |
| Power Supply | 5V via USB-C | 5V via USB-C | 5V via USB-C |
Opps
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