Chu air
About the Chu air PCB
Chu air is an open source PCB design by whowechina, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 220 × 10.1 mm, with 23 components from 9 distinct parts.
By type, the board carries 10 resistors, 6 transistors, 3 diodes, 2 connectors and 2 capacitors.
From the project
Pico controller for Chunithm-type rhythm game
Features: It's small, made for 15-17 inch screen. Air towers are replaced with built-in ToF sensors. Traditional IR Air mechanism is also provided for DIYers. HID lights, of course! 32 keys (upper and lower rows). Follows CrazyRedMachine's RedBoard I/O protocol. Command line of rich features. All source files open.
Thanks to many respectful guys/companies who made their tools or materials free or open source (KiCad, OnShape, InkScape, Raspberry things).
Chu air bill of materials (BOM)
23 components, 9 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 2N7002 | SOT-23 | Q1, Q3, Q5 |
| 3 | Q_Photo_NPN | LED_D5.0mm_IRBlack | Q2, Q4, Q6 |
| 2 | Conn_01x06_Socket | 6P_Air_Conn | J1, J2 |
| 3 | IR26-21C_L110_TR8 | LED_D5.0mm_IRGrey | D1, D2, D3 |
| 2 | 47uF | CP_Elec_5x5.9 | C1, C2 |
| 3 | 10R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R3, R5 |
| 3 | 1R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R4, R6 |
| 3 | 2K | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7, R8, R9 |
| 1 | 10K | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10 |
Chu air design files
The KiCad project lives in the whowechina/chu_pico repository on GitHub; these links point at the commit this page was built from.
- LayoutPCB/air/chu_air.kicad_pcb
- SchematicPCB/air/chu_air.kicad_sch
Chu air: common questions
How big is the Chu air PCB?
The Chu air measures 220 × 10.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Chu air?
23 components, from 9 distinct parts. The full bill of materials is listed on this page.
Where can I download the Chu air design files?
From the whowechina/chu_pico repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Chu air design in my own project?
It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.
