4 layers85 × 85 mm
Rprp STmpu devB qY-7F
gorougd/qY7F
MPU based on STM32MP157 512MB / 4Gbit DDR3L single bank (routed on PCB)
164 parts
6 layers85 × 55 mm
Mini server
Keyaan-07/ZenithA battery powered single board computer capable of running linux
- Size
- 85 × 55 mm
- Copper layers
- 6
- Thickness
- 0.23 mm
- Parts
- 159
- Nets
- 301
- Pads
- 1,223
- Tracks, vias
- 3,321, 447
- Pours
- 29
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 21 Apr 2026
- Updated
- 3 Jun 2026
Overview
Mini server is an open-source printed circuit board by Keyaan-07, from the Keyaan-07/Zenith repository on GitHub, published under the MIT licence. It is a 6-layer board of 85 × 55 mm with 159 parts on 301 nets, routed with 3,321 tracks and 447 vias.
It is built around the RK3328, TPS565201DDC and BQ25690RBAR, with the BQ29209DRBR, NT5CB256M16ER-FL and AON7262E among its other parts. Its parts include 75 capacitors, 39 resistors, 10 ICs, 9 connectors and 6 inductors. It belongs with the computers and single-board computers and power boards of this library.
Main components
6
RK3328
TFBGA-395L(14x14)0℃~+80℃ 1.3GHz 36KB 64 Bit ARM Cortex-A53 External ROMless TFBGA-395L(14x14) Microcontrollers (MCU/MPU/SOC) ROHSRockchipMicrocontrollers (MCU/MPU/SOC)
TPS565201DDC
TSOT-23-6-40℃~+125℃@(TJ) 1 320uA 4.5V~17V 500kHz 5A 760mV~7V Adjustable Buck Buck Built-in Yes TSOT-23-6 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
BQ25690RBAR
WQFN-26(3.5x4)WQFN-26(3.5x4) Battery Management ROHSTexas InstrumentsBattery Management
BQ29209DRBR
SON-8(3x3)-40℃~+110℃ 15mA 2 3uA 4.3V 4V~10V Lithium Battery Not supported Protection IC SON-8(3x3) Battery Management ROHSTexas InstrumentsBattery Management
NT5CB256M16ER-FL
TFBGA-960℃~+95℃ 1.066GHz 1.425V~1.575V 4Gbit Auto precharge function、Data mask function、Dynamic on-chip termination、ZQ calibration function、Asynchronous reset function、Write leveling function、Auto self-refresh DDR3 SDRAM TFBGA-96 DDR SDRAM ROHSNanya TechDDR SDRAM
AON7262E
DFN-8(3x3)-55℃~+150℃ 1 N-channel 1.652nF 10mΩ@10V 2.2V 34A 43W 45nC@10V 520pF 52pF 60V N-Channel DFN-8(3x3) MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
README
README.mdZenith
Zenith is a small single board computer made with the RK3328 which comes with 512 MegaBytes of DDR3 RAM. Zenith is built to run on battery backups along with USB Type-C power inputs. Features of zenith are:
- Quad core ARM Cortex-A53 CPU
- 512 MB DDR3 RAM
- SD support
- 100M ethernet
- HDMI out
- 24 bit audio
- 1x USB 3.0 2x USB 2.0
I made this SBC because i wanted to locally host some slack bots. There is literally no other reason. I have not compiled buildroot because i'll be using a prebuilt version from ROCK64. A small reason for this is because my laptop probably cannot handle compiling linux.
Check out this project on KiCanvas!
To check schematics, please go to the above link, imaging every page and putting it here would clutter the README.
Assembly guide:
- clone the repo and head to production:
git clone https://Github.com/Keyaan-07/Zenith
cd Zenith/hardware/production- go to your preferred PCB manufacturer and upload the gerber files there.
- get the PCBA option for both(or one) sides.
- Build the firmware from the buildroot repo.
- flash it to the SD card using rufus.ie
- plug the SD card in and start the board.
BOM
Onshape link
here is the onshape link for the project
Parts
159| Qty | Value | Footprint | References |
|---|---|---|---|
| 52 | 100n | Capacitor_SMD:C_0201_0603Metric | C0, C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C21, C22, C23 +36 |
| 17 | 10k | Resistor_SMD:R_0201_0603Metric | R2, R3, R5, R6, R8, R11, R17, R26, R27, R30, R31, R32, R33, R35, R38, R40 +1 |
| 17 | 10u | Capacitor_SMD:C_0603_1608Metric | C20, C34, C36, C38, C39, C41, C43, C44, C45, C46, C49, C50, C56, C57, C59, C63 +1 |
| 9 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11 |
| 6 | 2.2u | Inductor_SMD:L_1008_2520Metric | L1, L2, L3, L4, L5, L6 |
| 6 | R | Resistor_SMD:R_0201_0603Metric | R13, R14, R15, R18, R19, R20 |
| 5 | 100 | Resistor_SMD:R_0201_0603Metric | R22, R23, R24, R25, R34 |
| 4 | TPS563252DRLR | easyeda2kicad:SOT-563-6_L1.6-W1.2-P0.50-LS1.6-BL | U6, U7, U8, U9 |
| 4 | USB_C_Receptacle | Connector_USB:USB_C_Receptacle_Molex_105450-0101 | J6, J7, J8, J9 |
| 3 | 5.1k | Resistor_SMD:R_0201_0603Metric | R36, R37, R39 |
| 3 | MountingHole | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3 |
| 2 | 0R | Resistor_SMD:R_0201_0603Metric | R28, R29 |
| 2 | 1u | Capacitor_SMD:C_0201_0603Metric | C65, C68 |
| 2 | 35k | Resistor_SMD:R_0201_0603Metric | R12, R41 |
| 2 | 47n | Capacitor_SMD:C_0201_0603Metric | C72, C73 |
| 2 | Battery_Cell | Connector_JST:JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | BT1, BT2 |
| 2 | C_Small | Capacitor_SMD:C_0201_0603Metric | C60, C61 |
| 1 | 10m | Resistor_SMD:R_0402_1005Metric | R21 |
| 1 | 240 | Resistor_SMD:R_0201_0603Metric | R1 |
| 1 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | 56k | Resistor_SMD:R_0201_0603Metric | R16 |
| 1 | 6.6k | Resistor_SMD:R_0201_0603Metric | R4 |
| 1 | AON7262e | easyeda2kicad:DFN-8_L3.3-W3.3-P0.65-BL | Q2 |
| 1 | AudioJack4 | Connector_Audio:Jack_3.5mm_KoreanHropartsElec_PJ-320D-4A_Horizontal | J5 |
| 1 | BQ25690RBAR | easyeda2kicad:WQFN-26_L4.0-W3.5_BQ25690RBAR | U5 |
| 1 | BQ29209DRBR | Package_SON:VSON-8-1EP_3x3mm_P0.65mm_EP1.6x2.4mm | U10 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | Crystal_GND24 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | HDMI_A | Connector_Video:HDMI_A_Molex_208658-1001_Horizontal | J2 |
| 1 | LED | LED_SMD:LED_0402_1005Metric | D1 |
| 1 | Micro_SD_Card | Connector_Card:microSD_HC_Molex_104031-0811 | J3 |
| 1 | NT5CB256M16ER-FL | easyeda2kicad:TFBGA-96_L13.0-W8.0-R16-C6-P0.80-TL | U1 |
| 1 | RJ45_Hanrun_HR911105A_Horizontal | Connector_RJ:RJ45_Hanrun_HR911105A_Horizontal | J1 |
| 1 | RK3328 | easyeda2kicad:TFBGA395_L14.0-W14.0_RK3328 | U2 |
| 1 | TPD12S016PWR | easyeda2kicad:TSSOP-24_L7.8-W4.4-P0.65-LS6.4-BL | U3 |
| 1 | TPS565201 | Package_TO_SOT_SMD:SOT-23-6 | U4 |
| 1 | ~{UART0_CTS} | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | ~{UART0_RST} | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
Questions
How big is the Mini server PCB?
It measures 85 × 55 mm and has 6 copper layers, 0.23 mm thick.
What parts does the Mini server use?
159 parts, built around the RK3328, TPS565201DDC, BQ25690RBAR and BQ29209DRBR. 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 Mini server KiCad files?
From the Keyaan-07/Zenith repository on GitHub, at the commit this page was made from: the board is hardware/mini-server.kicad_pcb and its schematic hardware/DDR3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mini server design in my own project?
Its repository publishes it under the MIT 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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