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VGA4CPC Brett RevB

BrettHallen·Amstrad-CPC·VGA4CPC_Brett/RevB/VGA4CPC_Brett_RevB.kicad_pcb

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

About the VGA4CPC Brett RevB PCB

VGA4CPC Brett RevB is an open source RP2040/RP2350 PCB design by BrettHallen, published on GitHub. It is a 2-layer board measuring 106.1 × 78.7 mm, with 42 components from 21 distinct parts.

Its main chip is the RASPBERRY PI PICO, from the RP2040/RP2350 family. Other key parts include the 74HCT245 and TLV3202AID. By type, the board carries 18 resistors, 10 capacitors, 7 connectors, 5 ICs and 2 switches.

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 RevB, from the project README
From the project README

Main components on the VGA4CPC Brett RevB

RASPBERRY PI PICO74HCT245TLV3202AID

VGA4CPC Brett RevB bill of materials (BOM)

42 components, 21 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RASPBERRY PI PICO
U1
1
74HCT245
74LVC245
U2
3
TLV3202AID
TLV3212
U3, U4, U5
1
+5V IN
J1
1
CPC PLUS AUDIO OUT
J2
1
CPC PLUS VIDEO IN
J3
1
CPC VIDEO IN
J4
1
VFREQ
J5
1
LUM OUT
J7
1
SPARE GPIO
J8
1
RESET
SW1
1
WACKED
SW2
1
100NF
100nF
C1
9
100nF
C2, C3, C4, C5, C6, C7, C8, C9 +1
2
1KΩ
R1, R7
2
100Ω
R2, R6
1
68Ω
R3
1
22Ω
R4
3
75Ω
R5, R8, R9
6
220Ω
R10, R12, R13, R15, R16, R18
Show 1 more
QtyPartRefs
3
47Ω
R11, R14, R17

VGA4CPC Brett RevB 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 RevB: common questions

What microcontroller does the VGA4CPC Brett RevB use?

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

How big is the VGA4CPC Brett RevB PCB?

The VGA4CPC Brett RevB measures 106.1 × 78.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the VGA4CPC Brett RevB?

42 components, from 21 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 RevB 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 RevB 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 RevB 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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