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Graphics card

ShaneTWilliams·worlds-worst-graphics-card·hardware/rev-1/graphics-card.kicad_pcb

Graphics card PCB layout, top view — open source STM32 board by ShaneTWilliams
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About the Graphics card PCB

Graphics card is an open source STM32 PCB design by ShaneTWilliams, published on GitHub under the MIT license. It is a 4-layer board measuring 51.2 × 51.8 mm, with 75 components from 28 distinct parts.

Its main chip is the STM32H753ZITx, from the STM32 family. Other key parts include the AZ1117-5.0, AZ1117-3.3, AZ1117-1.2 and SiI1136. By type, the board carries 49 capacitors, 10 resistors, 5 ICs, 4 diodes, 3 inductors and 2 crystals.

From the project

Custom HDMI transmitter PCB with 480 MHz STM32H7 microcontroller

This board consists of an SiI1136 HDMI transmitter, driven by a dual-core 480 MHz STM32H745IIT6 microcontroller, with 64 MB of external SDRAM. It is USB-powered and uses SWD for flash and debug.

The goal of this project is to give me a custom, bare-metal platform on which I can try my hand at implementing simple graphics algorithms from scratch. The STM32 is key for this, with its dual cores, DMA2D (a DMA peripheral designed to fill frame buffers very quickly) and its LTDC peripheral, which will drive the display without any CPU load.

Graphics card, from the project README
From the project README

Main components on the Graphics card

AZ1117-5.0AZ1117-3.3AZ1117-1.2SiI1136STM32H753ZITx

Graphics card bill of materials (BOM)

75 components, 28 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AZ1117-5.0
U1
1
AZ1117-3.3
U2
1
AZ1117-1.2
U3
1
SiI1136
U4
1
STM32H753ZITx
U5
1
OSC
Y1
1
OSC_32
Y2
1
USB_B_Micro
J1
1
Conn_02x03_Odd_Even
J3
1
5V Rail LED
D1
1
3.3V Rail LED
D2
1
1.2V Rail LED
D3
1
USR_LED
D4
3
1k@100MHz
FB1, FB2, FB3
1
4.7u
C1
33
100n
C2, C3, C4, C5, C6, C7, C8, C9 +25
3
10u
C14, C26, C32
8
1u
C20, C22, C35, C36, C39, C40, C41, C42
2
27p
C44, C45
2
15p
C46, C47
Show 8 more
QtyPartRefs
1
510
R1
1
330
R2
3
4.7k
R3, R4, R10
1
120
R5
1
680
R6
1
4.06k
R7
1
240
R8
1
10k
R9

Graphics card design files

The KiCad project lives in the ShaneTWilliams/worlds-worst-graphics-card repository on GitHub; these links point at the commit this page was built from.

Graphics card: common questions

What microcontroller does the Graphics card use?

The Graphics card is built around the STM32H753ZITx, from the STM32 family.

How big is the Graphics card PCB?

The Graphics card measures 51.2 × 51.8 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Graphics card?

75 components, from 28 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Graphics card design files?

From the ShaneTWilliams/worlds-worst-graphics-card repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Graphics card design in my own project?

Yes, under the terms of its MIT license, which ShaneTWilliams chose for the repository.

Can I test firmware for the Graphics card without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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