4 layers54.6 × 89.5 mm
Hdmi2rgb adapter
embeddedboys/hdmi2rgb_adapter
hdmi2rgb_adapter is a simple HDMI to RGB deserializer based on TFP401 (TI)
55 parts4MIT
4 layers75.5 × 79.3 mm
Kaage Pi
abhilashsagar/Kaage-Pi17Open Source Linux SBC
- Size
- 75.5 × 79.3 mm
- Copper layers
- 4
- Thickness
- 1.57 mm
- Parts
- 117
- Nets
- 115
- Pads
- 469
- Tracks, vias
- 1,368, 231
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 25 Oct 2025
- Updated
- 25 Oct 2025
Overview
Kaage Pi is an open-source printed circuit board by abhilashsagar, from the abhilashsagar/Kaage-Pi repository on GitHub. It is a 4-layer board of 75.5 × 79.3 mm with 117 parts on 115 nets, routed with 1,368 tracks and 231 vias.
It is built around the JW5211, W25Q64JVSSIQ and XC6206-2.8V, with the CDRH104RNP-101NC among its other parts. Its parts include 48 capacitors, 36 resistors, 7 ICs, 7 connectors and 5 inductors. It belongs with the computers and single-board computers boards of this library.
Main components
4
JW5211
SOT-23-5-40℃~+125℃@(TJ) 1 1.2A 1.2MHz~1.8MHz 2.5V~6V 40uA 600mV~6V Adjustable Buck Buck Built-in Yes SOT-23-5 DC-DC Converters ROHSJoulWatt TechDC-DC Converters
W25Q64JVSSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 10uA 133MHz 150ms@(64KB) 2.7V~3.6V 20 Years 3ms 64Mbit SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
XC6206-2.8V
SOT-23-3L-40℃~+85℃@(Ta) 1 1uA 2.8V 250mA 350mV@(30mA) 6V Fixed Over Current Protection Positive SOT-23-3L Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSYONGYUTAIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
CDRH104RNP-101NC
SMD,10.2x10mm1.33A 1.35A 100uH 304mΩ ±30% SMD,10.2x10mm Power Inductors ROHSSumidaPower Inductors
README
README.mdKaage-Pi
Why I Built It I wanted to see if a usable Linux single-board computer could be built in India for under ₹2,000, using nothing more than open components, community knowledge, and hand-soldering tools.
Most of the SBCs we use today — Raspberry Pi, BeagleBone, etc. — are amazing. I wanted to prove that we can build our own — from the ground up — using parts available locally, and learn how Linux truly runs on bare metal in the process.
That’s how Kaage Pi was born: a home-soldered board built around the Allwinner V3s, an ARM Cortex-A7 SoC with 64 MB of integrated DDR2 RAM — powerful enough to boot Linux without any external memory.
This project isn’t about competing with Raspberry Pi. It’s about understanding, experimenting, and inspiring others to start their own journey in open hardware — where you can hold a running Linux system that you built with your own hands.
If you’ve ever wondered “Can I really make my own Linux board?” — the answer is yes, you can. Start small, stay patient, and let curiosity lead.
Parts
117| Qty | Value | Footprint | References |
|---|---|---|---|
| 23 | 2.2u | Capacitor_SMD:C_0805_2012Metric | C1, C4, C11, C12, C13, C15, C16, C17, C19, C20, C21, C23, C25, C40, C42, C43 +7 |
| 10 | 100n | Capacitor_SMD:C_0603_1608Metric | C3, C5, C7, C10, C14, C18, C24, C26, C27, C28 |
| 7 | 47k | Resistor_SMD:R_0603_1608Metric | R2, R23, R24, R25, R26, R27, R39 |
| 4 | 18pF | Capacitor_SMD:C_0603_1608Metric | C29, C31, C37, C38 |
| 4 | 1K | Resistor_SMD:R_0603_1608Metric | R8, R9, R40, R41 |
| 4 | 50 | Resistor_SMD:R_0603_1608Metric | R10, R11, R13, R14 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.5mm_Pad | H1, H2, H3, H4 |
| 3 | 22u | Capacitor_SMD:C_0603_1608Metric | C44, C47, C50 |
| 3 | 68K | Resistor_SMD:R_0603_1608Metric | R32, R36, R37 |
| 3 | CDRH104RNP-101NC | allwinnerv3s:SWPA6045S220MT | L1, L3, L4 |
| 3 | JW5211 | Package_TO_SOT_SMD:SOT-23-5 | U3, U4, U5 |
| 2 | 10u | Capacitor_SMD:C_0603_1608Metric | C22, C39 |
| 2 | 12k | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | 15K | Resistor_SMD:R_0603_1608Metric | R33, R34 |
| 2 | 1u | Capacitor_SMD:C_0603_1608Metric | C2, C30 |
| 2 | 2k | Resistor_SMD:R_0603_1608Metric | R5, R6 |
| 2 | 33 | Resistor_SMD:R_0603_1608Metric | R15, R16 |
| 2 | 4.7k | Resistor_SMD:R_0603_1608Metric | R28, R29 |
| 1 | 100k | Resistor_SMD:R_0603_1608Metric | R30 |
| 1 | 104 | Capacitor_SMD:C_0603_1608Metric | C32 |
| 1 | 10K | Resistor_SMD:R_0603_1608Metric | R31 |
| 1 | 10M | Resistor_SMD:R_0805_2012Metric | R12 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric | C35 |
| 1 | 1N5819 | Diode_SMD:D_SOD-123 | D1 |
| 1 | 1n | Capacitor_SMD:C_0603_1608Metric | C36 |
| 1 | 2.2 | Resistor_SMD:R_0603_1608Metric | R22 |
| 1 | 200k | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 22 uH | allwinnerv3s:SWPA6045S220MT | L6 |
| 1 | 240 | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 24MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y3 |
| 1 | 25u 50V | Capacitor_SMD:C_1206_3216Metric | C41 |
| 1 | 30K | Resistor_SMD:R_0603_1608Metric | R35 |
| 1 | 32768 | Crystal:Crystal_C26-LF_D2.1mm_L6.5mm_Horizontal | Y2 |
| 1 | 5.1 | Resistor_SMD:R_0603_1608Metric | R38 |
| 1 | 5V in | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J14 |
| 1 | 600Z | Inductor_SMD:L_0603_1608Metric | L2 |
| 1 | AllwinnerV3S | allwinnerv3s:eLQFP-128_14x14mm_P0.4mm | U1 |
| 1 | Conn_02x07_Odd_Even | Connector_PinSocket_2.54mm:PinSocket_2x07_P2.54mm_Vertical | J2 |
| 1 | HR911105_RJ45 | allwinnerv3s:HR911105_RJ45 | J1 |
| 1 | I2C0 | Connector_PinSocket_2.00mm:PinSocket_1x04_P2.00mm_Vertical | J8 |
| 1 | Jumper_2_Open | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | LCD_FPC40 | Connector_FFC-FPC:Hirose_FH12-40S-0.5SH_1x40-1MP_P0.50mm_Horizontal | LCD1 |
| 1 | LED 5V | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2 |
| 1 | LOGO | allwinnerv3s:logo_kaage | G*** |
| 1 | Micro_SD_Card_Ebay | allwinnerv3s:micro_sd_card | J4 |
| 1 | PG0 | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D3 |
| 1 | PT4103 | Package_TO_SOT_SMD:SOT-23-6 | U7 |
| 1 | RESET_SW | Button_Switch_SMD:SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | RST1 |
| 1 | UART0 | Connector_PinSocket_2.00mm:PinSocket_1x04_P2.00mm_Vertical | J5 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Molex-105017-0001 | J3 |
| 1 | W25Q64JVSSIQ | Package_SO:SOIC-8_5.23x5.23mm_P1.27mm | U2 |
| 1 | XC6206 | Package_TO_SOT_SMD:SOT-23-3 | U6 |
The 116 most common of 117 parts.
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Questions
How big is the Kaage Pi PCB?
It measures 75.5 × 79.3 mm and has 4 copper layers, 1.57 mm thick.
What parts does the Kaage Pi use?
117 parts, built around the JW5211, W25Q64JVSSIQ, XC6206-2.8V and CDRH104RNP-101NC. 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 Kaage Pi KiCad files?
From the abhilashsagar/Kaage-Pi repository on GitHub, at the commit this page was made from: the board is hardware/kaage_pi.kicad_pcb and its schematic hardware/kaage_pi.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Kaage Pi design in my own project?
Its repository states no licence, so its author keeps all rights: ask abhilashsagar before reusing the design.