Papaya
About the Papaya PCB
Papaya is an open source PCB design by gasman, published on GitHub. It is a 2-layer board measuring 65 × 56 mm, with 12 components from 5 distinct parts.
Other key parts include the AY-3-8912. By type, the board carries 8 resistors, 2 ICs and 2 connectors.
It belongs with the retro computing designs in this gallery.
From the project
an AY-3-8912 sound chip expansion board for the Raspberry Pi
Sure, you can emulate it, and honestly the AY is well-understood and deterministic enough that it would make no difference to the sound. But if you take that attitude, then what's the point of live music anyhow? I figure you don't need a 1980s-vintage Spectrum to be authentic, but you do at least need the actual sound chip.
Basically, I want to be as cool as the Gameboy folks. I want to get up on stage and make magic happen from a handheld device like I'm piloting a goddamn spaceship. And the best way to do that is to hook up an AY chip (or two) to a Raspberry Pi.
Main components on the Papaya
Papaya bill of materials (BOM)
12 components, 5 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | AY-3-8912 | DIP-28_W15.24mm_LongPads | U1, U2 |
| 1 | PJRAN2X1U01AUX | SWITCHCRAFT_PJRAN2X1U01AUX | J1 |
| 1 | Conn_02x20_Odd_Even | PinSocket_2x20_P2.54mm_Vertical | P1 |
| 4 | 10K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R5, R6 |
| 4 | 15K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R4, R7, R8 |
Papaya design files
The KiCad project lives in the gasman/papaya repository on GitHub; these links point at the commit this page was built from.
- Layoutpapaya2/papaya.kicad_pcb
Papaya: common questions
How big is the Papaya PCB?
The Papaya measures 65 × 56 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Papaya?
12 components, from 5 distinct parts. The full bill of materials is listed on this page.
Where can I download the Papaya design files?
From the gasman/papaya repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Papaya design in my own project?
The repository has no license, so all rights stay with gasman. Use it as a reference, and ask the author before reusing the design.
Similar boards
Amiga External
hoglet67
21.9 × 76.7 mm6 parts2LGPL-3.01.0k
Atari pickup
26.4 × 53.9 mm7 parts2LGPL-3.01.0k
Deniseadapter
26.7 × 62.2 mm16 parts2LGPL-3.01.0k
Analog
53.9 × 23.2 mm33 parts2LGPL-3.01.0k
Rgb to hdmi
77 × 97 mm67 parts2LGPL-3.01.0k
Buffer
53.9 × 23.2 mm13 parts2LGPL-3.01.0k