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VGA4CPC Brett RevF

BrettHallen·Amstrad-CPC·VGA4CPC_Brett/RevF/VGA4CPC_Brett_RevF.kicad_pcb

VGA4CPC Brett RevF PCB layout, top view — open source RP2040/RP2350 board by BrettHallen

About the VGA4CPC Brett RevF PCB

VGA4CPC Brett RevF is an open source RP2040/RP2350 PCB design by BrettHallen, published on GitHub. It is a 2-layer board measuring 99.5 × 76 mm, with 26 components from 18 distinct parts.

Its main chip is the RASPBERRY PI PICO2, from the RP2040/RP2350 family. Other key parts include the 74HCT245 and Comparator Daughterboard. By type, the board carries 13 resistors, 7 connectors, 3 ICs, 2 switches and 1 capacitor.

From the project

Amstrad CPC related projects

This HTML page will: - Check each line as you type it in - Colourise/capitalise keywords - Highlights missing GOTO/GOSUB targets - Save/load BAS file for resuming where you left off

Of course you would need to de-solder the original ROM and install this, but you wouldn't need to worry about cutting the PCB and wiring up pin 1, and you can just reinstall the original ROM.

VGA4CPC Brett RevF, from the project README
From the project README

Main components on the VGA4CPC Brett RevF

RASPBERRY PI PICO274HCT245Comparator Daughterboard

VGA4CPC Brett RevF bill of materials (BOM)

26 components, 18 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RASPBERRY PI PICO2
U1
1
74HCT245
U2
1
Comparator Daughterboard
U6
1
CPC VIDEO IN
J1
1
LUM OUT
J2
1
+5V IN
J3
1
VFREQ
J4
1
SPARE GPIO
J5
1
CPC PLUS VIDEO IN
J7
1
CPC PLUS AUDIO OUT
J8
1
RESET
SW1
1
WACKED
SW2
1
100NF
100nF
C1
3
75Ω
R1, R2, R3
1
100Ω
R4
1
1KΩ
R5
6
820Ω
R6, R7, R8, R9, R10, R11
2
220Ω
R12, R13

VGA4CPC Brett RevF design files

The KiCad project lives in the BrettHallen/Amstrad-CPC repository on GitHub; these links point at the commit this page was built from.

VGA4CPC Brett RevF: common questions

What microcontroller does the VGA4CPC Brett RevF use?

The VGA4CPC Brett RevF is built around the RASPBERRY PI PICO2, from the RP2040/RP2350 family.

How big is the VGA4CPC Brett RevF PCB?

The VGA4CPC Brett RevF measures 99.5 × 76 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the VGA4CPC Brett RevF?

26 components, from 18 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 VGA4CPC Brett RevF design files?

From the BrettHallen/Amstrad-CPC repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the VGA4CPC Brett RevF design in my own project?

The repository has no license, so all rights stay with BrettHallen. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the VGA4CPC Brett RevF without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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