STM32 Computer

This project is a STM32 computer were Linux can be deployed onto. The circuit board is made in Altium CircuitMaker.

URL to the board

https://workspace.circuitmaker.com/Projects/Details/DanielMrtensson/STM32-Computer

Status

• 2024-03-29: Initializing the project
• 2024-04-20: Done with the coarse routing for the components
• 2024-05-26: Done with the fine impedance matched routing
• 2024-06-06: In production at JLCPCB - 42 dollar for 5 pcs
• 2024-06-18: Received the package
• 2024-07-07: Received the components
• 2024-07-18: Done with soldering

Features

• Processor: STM32MP15XXAC
• Stack layers: 4
• 1 x HDMI
• 4 x USB A
• 1 x USB OTG(On The Go)
• 1 x 4/8 Gb eMMC (Embedded Multi Media Card)
• 1 x Ethernet RJ45
• 1 x Coin cell battery holder
• Size: 75 mm x 100 mm
• Thickness: 1.52 mm
• 3 x Mounting pads of M2.5
• 1 x 4/8 Gb DDRL3 RAM memory
• Debug: JTAG
• Power supply: 5V DC jack

Notes

To produce this board, the manufacture need to have these minimum capabilities:

• 0.1 mm minimum electrical clearance between traces pads and vias
• 0.09 mm minimum electrical clearance between BGA pads and traces
• Capability to cut the edge of the BGA pads if the minimum electrical clearance between BGA pads and traces are above 0.09 mm
• 0.09 mm minimum width of traces
• Via-in-pad according to IPC 4761 Type VII (Epoxy filled and clapped)
• Via hole size of 0.3 mm and via diameter of 0.4 mm
• Impedance control: JLC04161H-1080

I have been using JLCPCB as the manufacturer for this.

Pictures