Motherboard
About the Motherboard PCB
Motherboard is an open source PCB design by morzack, published on GitHub. It is a 4-layer board measuring 125 × 85 mm, with 194 components from 54 distinct parts.
Other key parts include the NUCLEO144-H743ZI, OPA2328DGKR, 74LVC1T45GW, SN74LVC1G14DBV and SMXS-04K. By type, the board carries 87 resistors, 47 capacitors, 27 ICs, 16 connectors, 11 diodes and 3 crystals.
It belongs with the dev boards & breakouts designs in this gallery.
From the project
Design files for breakout and motherboard PCBs for Sky130 NFC chip designed in NCSU's Tapeout Course (spr2025)
submodules vendor in reference boards for tt06 and caravel.
most up-to-date caravel evaluation PCB at caravelboard/hardware/development/caravel-dev-v5-M.2` -- this contains details on FTDI module and flash memory for bringup of on-chip VexRiscv management CPU
1. make symbol for pinout (actual) 2. identify routing constaints for breakout 3. make block diagram of off-chip requirements for bringup 4. implement schematics for off-chip stuff 5. layout, etc
Main components on the Motherboard
Motherboard bill of materials (BOM)
194 components, 54 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | NUCLEO144-H743ZI | ST_Morpho_Connector_144_STLink | U1 |
| 1 | OPA2328DGKR | VSSOP-8_3x3mm_P0.65mm | U2 |
| 3 | 74LVC1T45GW | SOT-363_SC-70-6 | U3, U5, U8 |
| 3 | SN74LVC1G14DBV | SOT-353_SC-70-5 | U4, U15, U18 |
| 3 | SMXS-04K | SMXS-04K-TP | U6, U33, U34 |
| 1 | SX3M10.000B10F20TNN | Crystal_SMD_3225-4Pin_3.2x2.5mm | U7 |
| 3 | SN74LVC1G3157DBVR | SOT-23-6 | U9, U10, U14 |
| 1 | FT4232H | LQFP-64_10x10mm_P0.5mm | U11 |
| 1 | 74HC595 | SOIC-16_3.9x9.9mm_P1.27mm | U12 |
| 1 | W25Q32JVSS | SOIC-8_5.3x5.3mm_P1.27mm | U13 |
| 1 | SN74LVC1G00DCK | SOT-353_SC-70-5 | U16 |
| 8 | 74CBTLV3257PW,118 | TSSOP-16_4.4x5mm_P0.65mm | U17, U19, U20, U21, U29, U30, U31, U32 |
| 1 | NX3225GA-25.000M-STD-CRG-2 | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | Si5351A | MSOP-10_3x3mm_P0.5mm | Y2 |
| 1 | X322512MSB4SI | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y3 |
| 3 | U.FL | U.FL_Hirose_U.FL-R-SMT-1_Vertical | J1, J2, J9 |
| 2 | DF40C-40DS-0.4V(51) DF40C-40DP-0.4V(51) | Hirose_DF40C(2.0)-40DS-0.4V_2x20_P0.4mm | J3, J4 |
| 1 | 2.54mm jumper | PinHeader_1x03_P2.54mm_Vertical | J8 |
| 8 | Conn_02x06_Odd_Even | PinSocket_2x06_P2.54mm_Horizontal | J10, J11, J12, J13, J14, J15, J16, J17 |
| 1 | USB_B_Micro | USB_Micro-B_Wuerth_629105150521 | J18 |
Show 34 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Micro_SD_Card | microSD_HC_Hirose_DM3AT-SF-PEJM5 | J19 |
| 2 | solderjump | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2 |
| 1 | C318884 | SW_Push_1P1T_XKB_TS-1187A | SW1 |
| 4 | d_white | D_0603_1608Metric | D1, D2, D3, D4 |
| 4 | d_red | D_0603_1608Metric | D5, D6, D7, D8 |
| 3 | SMAJ10CA | D_SMA | D9, D10, D11 |
| 5 | 1u | C_0603_1608Metric | C1, C6, C11, C31, C33 |
| 28 | 100n | C_0402_1005Metric | C2, C3, C7, C8, C9, C10, C12, C17 +20 |
| 2 | 16p | C_0402_1005Metric | C4, C5 |
| 3 | 10n | C_0402_1005Metric | C13, C20, C53 |
| 2 | 4.7u | CP_EIA-3216-18_Kemet-A | C14, C21 |
| 2 | 10p | C_0402_1005Metric | C15, C16 |
| 1 | 3.3u | C_0603_1608Metric | C19 |
| 2 | 0 | C_0402_1005Metric | C48, C49 |
| 2 | 100p | C_0402_1005Metric | C51, C52 |
| 1 | 1M | R_0402_1005Metric | R1 |
| 3 | 10M | R_0603_1608Metric | R2, R3, R5 |
| 2 | 5k | R_0402_1005Metric | R4, R15 |
| 2 | 2k | R_0603_1608Metric | R6, R7 |
| 33 | 10k | R_0402_1005Metric | R8, R9, R10, R14, R18, R19, R21, R23 +25 |
| 6 | 10k | R_0603_1608Metric | R11, R12, R13, R73, R90, R91 |
| 3 | 100k | R_0402_1005Metric | R22, R48, R49 |
| 3 | 10 | R_0402_1005Metric | R25, R26, R27 |
| 1 | 4.7k | R_0402_1005Metric | R35 |
| 1 | 12k <1% | R_0603_1608Metric | R37 |
| 1 | 1k | R_0402_1005Metric | R38 |
| 4 | 150 | R_0402_1005Metric | R39, R40, R41, R42 |
| 4 | 330 | R_0402_1005Metric | R43, R44, R45, R46 |
| 10 | 0 | R_0402_1005Metric | R64, R65, R70, R87, R88, R89, R100, R101 +2 |
| 1 | 27 | R_0402_1005Metric | R66 |
| 2 | 5k | R_0603_1608Metric | R68, R69 |
| 3 | 100 | R_0402_1005Metric | R78, R79, R80 |
| 2 | 75 | R_0603_1608Metric | R84, R86 |
| 5 | 22 | R_0402_1005Metric | R93, R94, R95, R96, R97 |
Motherboard design files
The KiCad project lives in the morzack/ece592-nfc-caravan-pcbs repository on GitHub; these links point at the commit this page was built from.
Motherboard: common questions
How big is the Motherboard PCB?
The Motherboard measures 125 × 85 mm, has 4 copper layers and is 1.61668 mm thick.
How many components are on the Motherboard?
194 components, from 54 distinct parts. The full bill of materials is listed on this page.
Where can I download the Motherboard design files?
From the morzack/ece592-nfc-caravan-pcbs repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Motherboard design in my own project?
The repository has no license, so all rights stay with morzack. Use it as a reference, and ask the author before reusing the design.
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