2 layers101.8 × 57.8 mm
Sc64v2
Polprzewodnikowy/SummerCart64
SummerCart64 - a fully open source N64 flashcart
96 parts1.2kGPL-3.0
2 layers33 × 19.5 mm
Qspi pmod adapter
algofoogle/tt07-raybox-zero4TT07 resub of tt04-raybox-zero "3D" VGA ray caster demo (like Wolf3D)
- Size
- 33 × 19.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 12
- Nets
- 18
- Pads
- 64
- Tracks, vias
- 167, 11
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 28 May 2024
- Updated
- 27 Apr 2025
Overview
Qspi pmod adapter is an open-source printed circuit board by algofoogle, from the algofoogle/tt07-raybox-zero repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 33 × 19.5 mm with 12 parts on 18 nets, routed with 167 tracks and 11 vias.
It is built around the W25Q128JVSIQ. Its parts include 5 connectors, 2 capacitors, 2 resistors, 2 diodes and 1 IC. It belongs with the fPGA and programmable logic and retro computing and games boards and the FPGA and CPLD boards of this library.
Main components
1README
README.md
raybox-zero for TT07 (Tiny Tapeout 07) - Resubmission updated from TT04
This is a resubmission of a very simple ray caster demo (sort of like Wolf3D rendering) driving a VGA display without a framebuffer (i.e. by 'racing the beam').
It was originally submitted to TT04, but due to a synthesis bug in the OpenLane flow, it produced severely glitchy output that I didn't discover until the chips came back from fabrication. Had I run a GL (gate-level) sim back in the day, I probably would've caught it, but maybe not had much I could do about it.
The version of OpenLane that TT07 uses doesn't seem to exhibit the same problem; I've since implemented GL sim, and both been able to prove the TT04 bug, and prove that it is gone in this TT07 version. NOTE: Extra special thanks goes to Uri Shaked and Matt Venn of Tiny Tapeout. The opportunity to do this was largely supported by the two of them, who graciously offered a resubmission after the TT04 synthesis bug (from OpenLane) had been observed to cause severe glitches in the rendering (due to an unintended alteration of the logic).
For more information:
- Read the documentation for this project (WIP; open an issue to tell me what more you want to know)
- See the main source repo for this project: algofoogle/raybox-zero
- See my journal with some details about how I work on this locally.
What is Tiny Tapeout?
Tiny Tapeout is an educational project that aims to make it easier and cheaper than ever to get your digital and analog designs manufactured on a real chip.
To learn more and get started, visit https://tinytapeout.com.
Resources
Parts
12| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 2 | 330 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2 |
| 1 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J4 |
| 1 | Green | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2 |
| 1 | PMOD plug: FLASHER | Anton Kicad Footprints Lib:PinHeader_2x06_P2.54mm_PMODPeriph2B_Clip | J1 |
| 1 | PMOD plug: RBZ | Anton Kicad Footprints Lib:PinHeader_2x06_P2.54mm_PMODPeriph2B_Clip | J2 |
| 1 | Red | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | Tiny QSPI socket | Anton Kicad Footprints Lib:PinSocket_2x06_P2.54mm_PMODPeriph2B_Vertical | J3 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.23x5.23mm_P1.27mm | U1 |
Questions
How big is the Qspi pmod adapter PCB?
It measures 33 × 19.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Qspi pmod adapter use?
12 parts, built around the W25Q128JVSIQ. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Qspi pmod adapter KiCad files?
From the algofoogle/tt07-raybox-zero repository on GitHub, at the commit this page was made from: the board is pcb/qspi-pmod-adapter/qspi-pmod-adapter.kicad_pcb and its schematic pcb/qspi-pmod-adapter/qspi-pmod-adapter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Qspi pmod adapter design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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