MX Buddy Board
About the MX Buddy Board
MX Buddy Board is an open source STM32 PCB design by MX-RESEARCH, published on GitHub. It is a 6-layer board measuring 115 × 70 mm, with 351 components from 102 distinct parts.
Its main chip is the MCU-STM32F407VGT6(LQFP100), from the STM32 family. Other key parts include the LAN8742A-CZ-TR, W25Q64JVSSIQ, NCP1117-3.3_SOT223, AHCT125 and TMC2209-LA. By type, the board carries 127 capacitors, 99 resistors, 38 inductors, 34 diodes, 25 connectors and 14 ICs.
From the project
MX Buddy Board
Main components on the MX Buddy Board
MX Buddy Board bill of materials (BOM)
351 components, 102 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LAN8742A-CZ-TR | VQFN-24-1EP_4x4mm_P0.5mm_EP2.45x2.45mm_ThermalVias | U1 |
| 1 | W25Q64JVSSIQ | SOIC8-wide | U2 |
| 1 | NCP1117-3.3_SOT223 | SOT-223-3_TabPin2 | U4 |
| 1 | AHCT125 | Texas_S-PVQFN-N14_ThermalVias | U5 |
| 4 | TMC2209-LA | QFN-28_EP_5x5_Pitch0.5mm | U6, U7, U8, U9 |
| 1 | MCU-STM32F407VGT6(LQFP100) | LQFP-100_14x14mm_P0.5mm | U10 |
| 1 | ST25DV64K | TSSOP-8_4.4x3mm_P0.65mm | U11 |
| 1 | STMPS2141STR | SOT-23-5 | U12 |
| 1 | DT1140-04LP | DT1140-04LP | U13 |
| 1 | MP2560DQ | DFN300X300X80-11N | U14 |
| 1 | HB9500SS-9.5-2P | CONN-TH_HB9500SS-9.5-2P | U99 |
| 2 | MMBF170 | SOT-23 | Q1, Q2 |
| 2 | PSMN2R6-40YS | SOT-669_LFPAK_alternate-numbers_VIA | Q3, Q4 |
| 1 | ASE-xxxMHz* | Oscillator_SMD_EuroQuartz_XO53-4Pin_5.0x3.2mm | X1 |
| 1 | Crystal | Crystal-3.2x2.5mm | Y2 |
| 1 | ECS-250-20-30B-AGL-TR | Crystal_SMD_Abracon_ABM3C-4Pin_5.0x3.2mm | Y4 |
| 1 | Conn_01x03 | PinHeader_1x03_P2.54mm_Vertical | J1 |
| 1 | 2,54 jumper | MEC | J1-jumper1 |
| 1 | 105017-0001 | USB-micro | J2 |
| 1 | HR911105A | HR911105A | J3 |
Show 82 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | faston | faston-hole-m | J4, J5 |
| 6 | 70543-0003 | Pin_1x04-XL | J7, P7, P8, P9, P10, P99 |
| 1 | 302-S141 | IDC-Header_2x07_P2.54mm_Vertical | J8 |
| 3 | 70543-0002 | Pin_1x03-XL | J9, P1, P2 |
| 1 | Conn_02x04_Odd_Even | PinHeader_2x04_P2.54mm_Vertical | J10 |
| 1 | UFL coaxial | UFL-MOLEX-73412-0114 | J11 |
| 1 | 67329-8000 | USB-A-vertical-MX-67329-8000 | J20 |
| 1 | Conn_01x05 | PinHeader_1x05_P2.54mm_Vertical | J21 |
| 1 | Conn_01x10 | MOLEX_559321010 | J23 |
| 2 | 70543-0001 | Pin_1x02-XL | P3, P4 |
| 2 | TBG-5-PW-2P/GN | PhoenixContact_MSTBVA-G_02x5.08mm_Vertical | P5, P6 |
| 2 | KEYSTONE 3568 | Fuse-Keystone-3557-2 | F1, F3 |
| 1 | fuse 7,5A | MEC | F1-fuse1 |
| 1 | fuse 3A | MEC | F3-fuse3 |
| 1 | Jumper | SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP1 |
| 1 | TACTA-64N-F | TACT-90 | SW1 |
| 1 | NTCG104LH104JTDS | R_0402_1005Metric | TH1 |
| 18 | BAV99W | SOT-323_SC-70 | D1, D2, D7, D8, D20, D21, D25, D26 +10 |
| 6 | GRN | LED_0603 | D3, D4, D9, D13, D15, D17 |
| 3 | BAT54KFILM | D_SOD-523 | D5, D6, D24 |
| 2 | USBLC6-2P6 | SOT143B | D10, D22 |
| 1 | ESDA6V1L | SOT-23 | D11 |
| 2 | SK310A-TP | DO-214AC | D12, D14 |
| 1 | D | D_SMA | D16 |
| 1 | SMAJ28A | D_SMA | D18 |
| 36 | BLM18KG121TN1D | R_0603_1608Metric | L1, L2, L3, L4, L5, L6, L7, L8 +28 |
| 1 | BLM41PG600SN1L | R_1806_4516Metric | L12 |
| 1 | VLS6045EX-150M-H | IND-SMD_L6.3-W6.0_VLS6045EX | L13 |
| 35 | 100n | C_0402_1005Metric | C1, C2, C3, C4, C9, C10, C11, C12 +27 |
| 1 | 10u* | C_0805_2012Metric | C5 |
| 1 | 10uf | C_0805_2012Metric | C6 |
| 28 | 100n | C_0603_1608Metric | C8, C14, C22, C23, C25, C26, C28, C39 +20 |
| 4 | 4.7uF | C_0603_1608Metric | C15, C24, C34, C36 |
| 2 | 30p | C_0402_1005Metric | C17, C56 |
| 1 | 4u7 | C_0805_2012Metric | C21 |
| 4 | 10u | C_0805_2012Metric | C33, C35, C37, C48 |
| 4 | 22n | C_0402_1005Metric | C43, C45, C73, C75 |
| 1 | 10p* | C_0402_1005Metric | C49 |
| 1 | 470p | C_0402_1005Metric | C57 |
| 4 | 100u | c_elec_6.3x7.7 | C60, C61, C90, C91 |
| 16 | 1n | C_0603_1608Metric | C64, C65, C66, C67, C68, C69, C70, C71 +8 |
| 2 | 1u | C_0603_1608Metric | C78, C117 |
| 2 | 10n | C_0402_1005Metric | C81, C82 |
| 1 | 100u | C_1206_3216Metric | C86 |
| 4 | 10u | C_1206_3216Metric | C92, C93, C121, C122 |
| 6 | 10p | C_0402_1005Metric | C104, C105, C123, C126, C127, C128 |
| 2 | 2,2u | C_0603_1608Metric | C106, C107 |
| 2 | 10u | C_0603_1608Metric | C116, C118 |
| 1 | 330u | CP_Elec_8x10.5 | C124 |
| 1 | 10n* | C_0402_1005Metric | C129 |
| 1 | 150pF | C_0402_1005Metric | C130 |
| 1 | 100nf | C_0603_1608Metric | C131 |
| 2 | 22uf | C_0805_2012Metric | C132, C133 |
| 15 | 100R | R_0402_1005Metric | R1, R2, R18, R22, R23, R41, R42, R44 +7 |
| 5 | 100k | R_0402_1005Metric | R3, R4, R43, R46, R102 |
| 2 | 2k2 | R_0603_1608Metric | R5, R6 |
| 10 | 1k8 | R_0402_1005Metric | R7, R8, R9, R10, R55, R56, R59, R60 +2 |
| 4 | 2k37 | R_0402_1005Metric | R11, R12, R14, R15 |
| 6 | 4k7 | R_0402_1005Metric | R13, R16, R58, R77, R80, R85 |
| 4 | 620R | R_0603_1608Metric | R17, R88, R94, R95 |
| 1 | 1k | R_0603_1608Metric | R19 |
| 1 | 2k | R_0603_1608Metric | R20 |
| 4 | 1k | R_0402_1005Metric | R21, R64, R79, R82 |
| 6 | 33R | R_0402_1005Metric | R24, R25, R27, R32, R98, R99 |
| 9 | 10k | R_0402_1005Metric | R26, R33, R34, R35, R54, R78, R81, R84 +1 |
| 3 | 1k5 | R_0402_1005Metric | R28, R29, R30 |
| 1 | 100K 1% | R_0402_1005Metric | R31 |
| 1 | 12k1 | R_0402_1005Metric | R36 |
| 4 | 49.9R | R_0402_1005Metric | R37, R38, R39, R40 |
| 2 | 10k | R_0603_1608Metric | R45, R48 |
| 8 | R22 | R_1206 | R65, R66, R67, R68, R73, R74, R75, R76 |
| 1 | 100R* | R_0402_1005Metric | R71 |
| 2 | 10k* | R_0402_1005Metric | R72, R97 |
| 1 | 1k* | R_0402_1005Metric | R83 |
| 2 | 0R | R_0402_1005Metric | R86, R92 |
| 1 | 47k | R_0402_1005Metric | R87 |
| 1 | 510R | R_0402_1005Metric | R91 |
| 1 | 330R | R_0402_1005Metric | R93 |
| 1 | 17.4K | R_0402_1005Metric | R100 |
| 1 | 200K | R_0402_1005Metric | R101 |
| 1 | 40.2K | R_0402_1005Metric | R103 |
| 1 | 210K | R_0402_1005Metric | R104 |
MX Buddy Board design files
The KiCad project lives in the MX-RESEARCH/MX_Buddy_Board repository on GitHub; these links point at the commit this page was built from.
- LayoutBUDDY_v1.0.0.kicad_pcb
- SchematicBUDDY_v1.0.0.kicad_sch
MX Buddy Board: common questions
What microcontroller does the MX Buddy Board use?
The MX Buddy Board is built around the MCU-STM32F407VGT6(LQFP100), from the STM32 family.
How big is the MX Buddy Board?
The MX Buddy Board measures 115 × 70 mm, has 6 copper layers and is 1.6 mm thick.
How many components are on the MX Buddy Board?
351 components, from 102 distinct parts. The full bill of materials is listed on this page.
Where can I download the MX Buddy Board design files?
From the MX-RESEARCH/MX_Buddy_Board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the MX Buddy Board design in my own project?
The repository has no license, so all rights stay with MX-RESEARCH. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the MX Buddy Board without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
Similar boards
STM32LumenPnP Motherboard
opulo-inc
149 × 95 mm296 parts4LCC-BY-SA-4.03.7k
STM32Type c
google
188 × 30 mm17 parts2LApache-2.02.9k
STM32Main panel
234 × 84 mm26 parts4LApache-2.02.9k
STM32Base
52.3 × 52.3 mm36 parts2LApache-2.02.9k
STM32Type a
150 × 30 mm14 parts2LApache-2.02.9k
STM32Type e
140.5 × 30 mm13 parts2LApache-2.02.9k