4 layers72.6 × 170 mm
OpenJBOD RP2040
OpenJBOD/rp2040
This repository contains the hardware design files OpenJBOD RP2040 Baseboard.
129 parts87CERN-OHL-P-2.0
4 layers170.2 × 92 mm
CM4 JBOD Control Board
ApplePie420/OpenJBOD-CM43This project is heavily inspired by the work of TheGuyDanish, specifically his OpenJBOD thingamajig.
- Size
- 170.2 × 92 mm
- Copper layers
- 4
- Thickness
- 1.57 mm
- Parts
- 78
- Nets
- 206
- Pads
- 554
- Tracks, vias
- 1,348, 279
- Pours
- 17
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 6 Oct 2024
- Updated
- 6 Oct 2024
Overview
CM4 JBOD Control Board is an open-source printed circuit board by ApplePie420, from the ApplePie420/OpenJBOD-CM4 repository on GitHub. It is a 4-layer board of 170.2 × 92 mm with 78 parts on 206 nets, routed with 1,348 tracks and 279 vias.
It is built around the 74LVC1G07, MAX3221CPW and EMC2305-1-AP-TR, with the 74LVC1G02Z, RT9742AGJ5F and SS14 among its other parts. Its parts include 23 capacitors, 21 resistors, 11 connectors, 10 ICs and 5 diodes. It belongs with the computers and single-board computers boards and the Raspberry Pi (Linux) boards of this library.
Main components
6
74LVC1G07
SOT-353-40℃~+105℃ 1 1 1.65V~5.5V 1.6ns@5.5V,50pF 24mA 4uA 74LVC Open-drain Power-off isolation、Level shifting Unidirectional SOT-353 Buffers, Drivers, Receivers, Transceivers ROHSWuxi I-core ElecBuffers, Drivers, Receivers, Transceivers
MAX3221CPW
TSSOP-160℃~+70℃ 1 1 1uA 250Kbps 3V~5.5V Transceiver Yes ±15kV TSSOP-16 RS232 ICs ROHSTexas InstrumentsRS232 ICs
EMC2305-1-AP-TR
QFN-16-EP(4x4)-40℃~+125℃ 3V~3.6V 625uA I2C、SMBus QFN-16-EP(4x4) Brushed DC Motor Drivers ROHSMicrochip TechnologyBrushed DC Motor Drivers
74LVC1G02Z
SOT-553-5-40℃~+125℃ 1 1.65V~5.5V 1.7V~2V 1.7ns@5V,50pF 2 200uA 3.4V~3.8V 32mA 32mA 550mV~800mV 700mV~800mV 74LVC Series NOR Gate SOT-553-5 Logic Gates ROHSDiodes IncorporatedLogic Gates
RT9742AGJ5F
TSOT-23-5-40℃~+85℃ 1 2.7V~6V 3A 55mΩ Active High High Side Switch Short-Circuit Protection(SCP)、Undervoltage Protection(UVP)、Overcurrent Protection(OCP)、Over Temperature Protection TSOT-23-5 Power Distribution Switches ROHSRichtek TechPower Distribution Switches
SS14
SMA(DO-214AC)-55℃~+150℃ 1A 25A 300uA@40V 40V 550mV@1A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
README
README.mdRaspberry Pi CM4 OpenJBOD Controller
This project is heavily inspired by the work of TheGuyDanish, specifically his OpenJBOD thingamajig.
It aims to provide much more "hackable" and robust way to to what OpenJBOD aims to do.
You can preview the schematics in .pdf here
Images
KiCAD libraries
Since I am not sure how to properly export my global libraries to the project, and I am too lazy to be bothered by changing the references individually, I have provided the entire "Custom_Libs" folder that I have on my computer. Some footprints or whatever might not be used in this project, you can safely ignore those. Adding this folder to library path should be enough for KiCAD to then locate all necessary symbols, footprints and 3D models. If not, you can link them manually. I might fix this sometime in the future maybe.
--- TBA ---
Parts
78| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 100n | Capacitor_SMD:C_0603_1608Metric | C4, C5, C6, C7, C8, C9, C10, C17, C18, C21, C23 |
| 11 | 10k | Resistor_SMD:R_0603_1608Metric | R2, R3, R4, R5, R6, R7, R8, R9, R16, R17, R21 |
| 5 | 47u | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A | C11, C12, C13, C14, C15 |
| 4 | 10u | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A | C1, C2, C3, C16 |
| 3 | 470n | Capacitor_SMD:C_0603_1608Metric | C19, C20, C22 |
| 3 | LED | LED_SMD:LED_0603_1608Metric | D1, D2, D3 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R15, R19 |
| 2 | 470 | Resistor_SMD:R_0603_1608Metric | R11, R12 |
| 2 | 74LVC1G02 | Package_TO_SOT_SMD:SOT-23-5 | U9, U10 |
| 2 | MountingHole_Pad | MountingHole:MountingHole_4mm_Pad_TopBottom | H1, H3 |
| 2 | SS14 | Diode_SMD:D_SMA | D4, D5 |
| 2 | TPD4EUSB30 | Package_SON:USON-10_2.5x1.0mm_P0.5mm | U5, U6 |
| 1 | 12k 1% | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 2k2 | Resistor_SMD:R_0603_1608Metric | R18 |
| 1 | 2k2 1% | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 4k7 | Resistor_SMD:R_0603_1608Metric | R20 |
| 1 | 5.1k | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 74LVC1G07 | Package_TO_SOT_SMD:SOT-23-5 | U8 |
| 1 | 75 | Resistor_SMD:R_0603_1608Metric | R14 |
| 1 | ALERT | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | ATX-24 | Connector_Molex:Molex_Mini-Fit_Jr_5566-24A_2x12_P4.20mm_Vertical | J1 |
| 1 | Compute_Module_4 | Custom_Footprints:Raspberry-Pi-4-Compute-Module | U1 |
| 1 | DE9_Plug_MountingHoles | Connector_Dsub:DSUB-9_Male_Horizontal_P2.77x2.84mm_EdgePinOffset4.94mm_Housed_MountingHolesOffset7.48mm | J5 |
| 1 | EMC1833T-1E/RW | Custom_Footprints:WDFN8_RW_MCH | U3 |
| 1 | EMC2305-1-AP-TR | Custom_Footprints:QFN16_4x4MC_MCH | U2 |
| 1 | FAN1 | Custom_Footprints:CONN_SD-47053-001_H10p00_MOL | J6 |
| 1 | FAN2 | Custom_Footprints:CONN_SD-47053-001_H10p00_MOL | J7 |
| 1 | FAN3 | Custom_Footprints:CONN_SD-47053-001_H10p00_MOL | J8 |
| 1 | FAN4 | Custom_Footprints:CONN_SD-47053-001_H10p00_MOL | J9 |
| 1 | FAN5 | Custom_Footprints:CONN_SD-47053-001_H10p00_MOL | J10 |
| 1 | MAX3221 | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U7 |
| 1 | Micro_SD_Card | Connector_Card:microSD_HC_Molex_104031-0811 | J2 |
| 1 | NPN | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | ON | Button_Switch_SMD:SW_SPST_B3U-3000P | SW1 |
| 1 | PCIe x1 Open Back | Custom_Footprints:CONN36_6-1734774-7_PCIe_x1 | J3 |
| 1 | PROBE1 | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | X7 |
| 1 | PROBE2 | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | X6 |
| 1 | RJ45_RB1-125B8G1A | Connector_RJ:RJ45_UDE_RB1-125B8G1A | J4 |
| 1 | RT9742AGJ5F | Package_TO_SOT_SMD:TSOT-23-5 | U4 |
| 1 | USB_BOOT | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP1 |
| 1 | USB_C_Plug_USB2.0 | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | P1 |
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Questions
How big is the CM4 JBOD Control Board PCB?
It measures 170.2 × 92 mm and has 4 copper layers, 1.57 mm thick.
What parts does the CM4 JBOD Control Board use?
78 parts, built around the 74LVC1G07, MAX3221CPW, EMC2305-1-AP-TR and 74LVC1G02Z. 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 CM4 JBOD Control Board KiCad files?
From the ApplePie420/OpenJBOD-CM4 repository on GitHub, at the commit this page was made from: the board is CM4_JBOD_Control_Board.kicad_pcb and its schematic CM4_JBOD_Control_Board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CM4 JBOD Control Board design in my own project?
Its repository states no licence, so its author keeps all rights: ask ApplePie420 before reusing the design.