: 28 general-purpose I/O pins, including I2C, SPI, and UART. USB 2.0 : Direct access to one USB 2.0 port. SD Card : Used only on Lite (non-eMMC) variants. 2026 Update: New Developments in CM4 Boardview
Once you have a .brd file (e.g., for a third-party CM4 carrier board):
Use the tool (hotkey Backtick or ~ ) to click any pin and immediately see every connected component across the entire board. Key Power Rails to Test on the CM4 Carrier Board cm4 94v0 boardview new
This rating is mandatory for high-reliability and safety-critical electronics in industries like automotive, medical, industrial controls, and networking equipment that run 24/7. For a CM4 carrier board, often used in such demanding environments, the "94V-0" mark on its PCB signifies a commitment to quality and safety, ensuring the board's material won't contribute to a fire hazard in case of a component failure. Many high-quality CM4 boards proudly list this feature in their specifications.
If you are a hardware designer creating a new custom carrier board, you might start with the official CM4IO KiCad project files provided by the Raspberry Pi Foundation. These files contain the exact symbols, pinouts, and footprints for the CM4's high-density connectors, ensuring that your custom board will work seamlessly. You can copy entire sections from this open-source reference design—like the power management unit, the Ethernet magnetics, or the HDMI routing—and paste them directly into your own design. This drastically speeds up development and ensures compliance with signal integrity guidelines. : 28 general-purpose I/O pins, including I2C, SPI, and UART
94V-0 is a UL 94 standard standard set by Underwriters Laboratories.
| Software | File Support | Platform | Best For | |----------|--------------|----------|----------| | | .brd , .fz , .csv | Win/Linux/Mac | Free, fast, netlist highlighting | | PCBRepairTool | .brd , .cad | Windows | Repair shops, component search | | Logic (Saleae) | custom exports | Win/Linux/Mac | Debugging with logic analyzer | | KiCad | .kicad_pcb | All | If you import/convert to native format | 2026 Update: New Developments in CM4 Boardview Once
The Raspberry Pi Compute Module 4 and its official IO board both carry the 94V-0 stamp. When searching for files, ignore the 94V-0 text. Look specifically for the or CM4 IO Board design files. Where to Download Official CM4 Boardview and Schematics
For electronics engineers, repair technicians, and custom hardware builders, tracking down a is essential for diagnosing hardware failures or designing custom hardware interfaces. This guide outlines everything you need to know about navigating the layout of this specific hardware generation, working with its flame-retardant standard, and utilizing design files to build or repair modern embedded systems. Understanding the Blueprint: CM4, 94V-0, and Boardviews
FlexBV is a premium, paid tool designed specifically for professional technicians who run high-volume repair shops. It integrates seamlessly with digital microscopes and thermal cameras, allowing you to overlay the digital boardview directly on top of live video feeds of the physical board. 3. PCBZ (for .FZ files)