HardLabs

A500-USB-Keyboard-Adapter-JLC

wiretap-retro·A500-USB-Keyboard-Adapter-JLC·amiga-500-usb-kb-RP2040 (rev0)/amiga-500-usb-kb-rp2040.kicad_pcb

A500-USB-Keyboard-Adapter-JLC PCB layout, top view — open source RP2040/RP2350 board by wiretap-retro
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About the A500-USB-Keyboard-Adapter-JLC PCB

A500-USB-Keyboard-Adapter-JLC is an open source RP2040/RP2350 PCB design by wiretap-retro, published on GitHub. It is a 4-layer board measuring 42.5 × 40 mm, with 42 components from 19 distinct parts.

Its main chip is the C2040, from the RP2040/RP2350 family. Other key parts include the TXS0104ED, C2940195 and TPS7A2033PDBVR. By type, the board carries 19 capacitors, 10 resistors, 6 connectors, 4 ICs, 2 switches and 1 crystal.

It belongs with the keyboards and retro computing designs in this gallery.

From the project

A USB keyboard adapter for the Amiga 500 based on the RP2040 for JLCPCB Assembly

Demo Video: https://youtu.be/7yw0AOvhLqg (original board shown, this repository is an updated/simplified design for JLCPCB assembly)

A500-USB-Keyboard-Adapter-JLC, from the project README
From the project README

Main components on the A500-USB-Keyboard-Adapter-JLC

TXS0104EDC2940195TPS7A2033PDBVRC2040

A500-USB-Keyboard-Adapter-JLC bill of materials (BOM)

42 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TXS0104ED
IC1
1
C2940195
W25Q64JVXGIQ_TR
IC2
1
TPS7A2033PDBVR
IC3
1
C2040
RP2040
U0
1
ABLS-12.000MHZ-B4-T
ABLS-12MHZ-B4-T
X1
1
47346-0001
J1
1
10129379-904002BLF
USB_HEADER
J2
1
534237-6
Type A
J3
1
534237-6
Type B
J4
1
10129379-902002BLF
Power LED
J5
1
10129379-902002BLF
Floppy LED
J6
2
FSM2JSMAATR
S1, S2
12
06035C104KAT2A
0.1uF
C1, C2, C5, C6, C8, C9, C10, C11 +4
2
06035A270JAT4A
27pF
C3, C4
5
0603YC105KAT2A
1uF
C7, C13, C16, C17, C18
3
CR0603-FX-1002ELF
10k
R1, R4, R7
2
CRCW08051K00FKEAHP
1k
R2, R3
2
MCT06030C1001FPW00
1k
R5, R6
3
RC0603FR-0727RL
27
R8, R9, R10

A500-USB-Keyboard-Adapter-JLC design files

The KiCad project lives in the wiretap-retro/A500-USB-Keyboard-Adapter-JLC repository on GitHub; these links point at the commit this page was built from.

A500-USB-Keyboard-Adapter-JLC: common questions

What microcontroller does the A500-USB-Keyboard-Adapter-JLC use?

The A500-USB-Keyboard-Adapter-JLC is built around the C2040, from the RP2040/RP2350 family.

How big is the A500-USB-Keyboard-Adapter-JLC PCB?

The A500-USB-Keyboard-Adapter-JLC measures 42.5 × 40 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the A500-USB-Keyboard-Adapter-JLC?

42 components, from 19 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 A500-USB-Keyboard-Adapter-JLC design files?

From the wiretap-retro/A500-USB-Keyboard-Adapter-JLC repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the A500-USB-Keyboard-Adapter-JLC design in my own project?

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

Can I test firmware for the A500-USB-Keyboard-Adapter-JLC 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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