The official schematic for the Raspberry Pi 4 Model B (revision 1.2, 1.4, and 1.5) is released by Raspberry Pi Ltd. (formerly the Raspberry Pi Foundation) under a non-commercial license. It is distributed as a PDF file within the Raspberry Pi Hardware Reference repository on their official website and GitHub. Users should note that while the schematics are publicly accessible, the board’s physical layout (Gerber files) and the proprietary bootloader code are not fully open source.
The Raspberry Pi Foundation publishes the official Raspberry Pi 4 Model B schematic PDF on its product documentation site; search “Raspberry Pi 4 Model B schematic” on Raspberry Pi’s documentation pages to download the official files. Raspberry Pi 4 Model B Full Schematic
It is important to note a caveat regarding the "Full" Schematic. While comprehensive, the Broadcom BCM2711 datasheet itself is largely proprietary and closed-source. The official schematic for the Raspberry Pi 4
You might ask, "I’m just running Python scripts, why do I need the schematic?" Users should note that while the schematics are
Here is why:
At the heart of the schematic lies the Broadcom BCM2711 application processor. The schematic details: