A500-USB-Keyboard-Adapter-RP2040

wiretap-retro·A500-USB-Keyboard-Adapter-RP2040·amiga-500-usb-kb-stamp/amiga-500-usb-kb-stamp.kicad_pcb

About the A500-USB-Keyboard-Adapter-RP2040 PCB

A500-USB-Keyboard-Adapter-RP2040 is an open source RP2040/RP2350 PCB design by wiretap-retro, published on GitHub. It is a 2-layer board measuring 48.8 × 43.9 mm, with 17 components from 14 distinct parts.

Its main chip is the RP2040_STAMP, from the RP2040/RP2350 family. Other key parts include the TXS0104ED. By type, the board carries 9 connectors, 4 resistors, 2 ICs and 2 capacitors.

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 Pi Stamp RP2040

Demo Video: https://youtu.be/7yw0AOvhLqg (Rev 0 board with bodges/resistors. These have been corrected and implemented in Rev 1.)

A500-USB-Keyboard-Adapter-RP2040, from the project README — From the project README

Main components on the A500-USB-Keyboard-Adapter-RP2040

TXS0104ED RP2040_STAMP

A500-USB-Keyboard-Adapter-RP2040 bill of materials (BOM)

17 components, 14 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	TXS0104ED	SOIC127P600X175-14N	IC1
1	RP2040_STAMP RP2040_Stamp	RP2040_Stamp_THT	U1
1	USB3075-30-A	USB307530A	J1
1	USB_HEADER	PinHeader_1x04_P2.54mm_Horizontal	J2
1	Type A	PinSocket_1x08_P2.54mm_Vertical	J3
1	Type B	PinSocket_1x08_P2.54mm_Vertical	J4
1	I2C	PinHeader_1x04_P2.54mm_Vertical	J5
1	DEBUG	PinHeader_1x06_P2.54mm_Vertical	J6
1	Power LED	PinHeader_1x02_P2.54mm_Horizontal	J7
1	Floppy LED	PinHeader_1x02_P2.54mm_Horizontal	J8
1	USB_BOOT	PinHeader_1x02_P2.54mm_Vertical	J9
2	100NF 100nF	C_0805_2012Metric_Pad1.15x1.40mm_HandSolder	C1, C2
2	10K 10k	R_0805_2012Metric_Pad1.15x1.40mm_HandSolder	R1, R4
2	R_Small	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R2, R3

A500-USB-Keyboard-Adapter-RP2040 design files

The KiCad project lives in the wiretap-retro/A500-USB-Keyboard-Adapter-RP2040 repository on GitHub; these links point at the commit this page was built from.

A500-USB-Keyboard-Adapter-RP2040: common questions

What microcontroller does the A500-USB-Keyboard-Adapter-RP2040 use?

The A500-USB-Keyboard-Adapter-RP2040 is built around the RP2040_STAMP, from the RP2040/RP2350 family.

How big is the A500-USB-Keyboard-Adapter-RP2040 PCB?

The A500-USB-Keyboard-Adapter-RP2040 measures 48.8 × 43.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the A500-USB-Keyboard-Adapter-RP2040?

17 components, from 14 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-RP2040 design files?

From the wiretap-retro/A500-USB-Keyboard-Adapter-RP2040 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-RP2040 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-RP2040 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.