BB3plus mainboard
About the BB3plus mainboard PCB
BB3plus mainboard is an open source STM32 PCB design by eez-open, published on GitHub under the TAPR-OHL-1.0 license. It is a 4-layer board measuring 233 × 230.5 mm, with 353 components from 116 distinct parts.
Its main chip is the STM32G071R8T6, from the STM32 family. Other key parts include the SN74HCS02PWR, M24C32-DFDW6TP, SN74LVC1G74DCUR, SN74LVC1G125DCKR and TPS3851H18EDRBR. By type, the board carries 138 capacitors, 84 resistors, 28 ICs, 27 crystals, 20 inductors and 19 diodes.
It belongs with the power & battery designs in this gallery.
From the project
EEZ Bench Box 3 Plus (BB3+) Modular T&M chassis
EEZ BB3+ was conceived as a successor to the BB3 project, which would bring a number of modifications and improvements. The following modifications are planned:
[x] Combining 3 existing core modules (power supply, MCU and backplane) into a single mainboard [x] Enlarge TFT touchscreen from 4.3" (480x272) resistive to 5" (800x480) capacitive [x] Increase fan size from Ø80 to 92 mm [x] Single main power rail +12V (45/60 W) [x] Introducing half width modules and increasing the total number of modules from 3 full-width to 5 half-width (or two 1½-width) [x] TFT Display PCB with 4 user switch/hot…
Main components on the BB3plus mainboard
BB3plus mainboard bill of materials (BOM)
353 components, 116 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | SN74HCS02PWR | TSSOP-14 | IC1, IC7 |
| 1 | M24C32-DFDW6TP | TSSOP-8 | IC2 |
| 1 | SN74LVC1G74DCUR | DCU8 | IC3 |
| 1 | SN74LVC1G125DCKR | SOT65P210X110-5N | IC4 |
| 1 | STM32G071R8T6 | LQFP-64_10x10MM | IC5 |
| 1 | TPS3851H18EDRBR | DRV8601DRBT | IC6 |
| 2 | TPS62933ODRLR | DRL0008A | IC8, IC20 |
| 1 | LM64460CPPQRYFRQ1 | VQFN22_RYF_TEX | IC9 |
| 1 | SN6505BDBVR | DBV0006A_N | IC10 |
| 1 | EMC2301-1-ACZL-TR | MSOP-8_MS_LIT | IC11 |
| 1 | ISO6763FDWR | DW16 | IC12 |
| 1 | BD00FC0W | TO-252-5 | IC13 |
| 1 | THVD1420DR | SOIC127P600X173-8N | IC14 |
| 1 | TPS7A2050PDBVR | DBV5 | IC15 |
| 1 | TPS7A2033PDBVR | DBV5 | IC16 |
| 2 | TPD4E001DRLR | DRL6 | IC17, IC18 |
| 1 | USB5807C/KD | VQFN100_KDX_MCH-L | IC19 |
| 1 | MIC2026A-1YM-TR | SOIC127P600X173-8N | IC21 |
| 1 | PTN5150AHXMP | SOT1355-1_X2QFN12_NXP-L | IC22 |
| 1 | TPS2068E | DBV5 | IC23 |
Show 96 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | TPD2E001DRLR | DRL5 | IC24, IC25 |
| 1 | FUSB340TMX | QFN40P200X280X40-19N | IC26 |
| 1 | TPS22948DCKR | DCK6 | IC27 |
| 1 | TLE75008ESDXUMA1 | SOP65P600X115-25N | IC28 |
| 6 | 2N7002 | SOT103P240X110-3N | Q1, Q2, Q3, Q4, Q7, Q8 |
| 1 | MMBT5401 | SOT23-BEC | Q5 |
| 1 | DMP3013SFV-7 | TRANS_FDMC8010 | Q6 |
| 1 | DF40HC(3.0)-100DS-0.4V(51) | Raspberry-Pi-CM5 (MB)_Left | X1 |
| 1 | DF40HC(3.0)-100DS-0.4V(51) | Raspberry-Pi-CM5 (MB)_Right | X2 |
| 1 | SM3ZS067U410AMR1000 | 1-2199230-6 single (80 mm) | X3 |
| 1 | 571-0400 | 571-0400 | X5 |
| 1 | GSP1.9101.1 | GSP191011 | X6 |
| 1 | 1-726388-2 | 1-726388-2 | X7 |
| 3 | B3P-VH-FB-B | B3P-VH-FB-B_CRE | X9, X10, X11 |
| 1 | 22-27-2031 | 22-27-2041 (3-pin only) | X12 |
| 2 | TBP03R1-350-10BE | TBP03R1-350-10BE | X13, X26 |
| 1 | USB4056-03-A | USB4056-03-A_REVA2 | X14 |
| 1 | MGB0A1-1CDDB005H | GCT_MGB0A1-1CDDB005H_REVA | X15 |
| 1 | SS-53000-002 | SS-53000-002 | X16 |
| 2 | 505110-2291 | 5051102291 | X17, X18 |
| 5 | 1001878410201TLF | 10018783-10101TLF | X19, X20, X21, X22, X23 |
| 3 | 77313-802-20LF | 77313-802-20LF | X24, X25, X27 |
| 1 | FC-135 32.7680KA-K0 | ABS07AIG | Y1 |
| 1 | VXM7-9032-25M0000000 | XTAL_403C11A24M00000 | Y2 |
| 2 | 3622 | 3622 | F1, F2 |
| 1 | 10129378-903001BLF | PinHeader_1x03_P2.54mm_vert_numbered | JP9 |
| 2 | AZ943-1CH-12DE | AZ943-1CH-12DE | K1, K2 |
| 5 | RT424012 | RT424005 | K3, K4, K5, K6, K7 |
| 1 | B57236S0200M000 | NTC_11.5X6_RM5 | NTC1 |
| 1 | TLP291(GB.SE(T | SOIC127P700X210-4N | OK1 |
| 1 | 2051-47-SM-RPLF | SAR_4.5MM | SAR1 |
| 1 | CMI-9605-1280T | CMI-9605-1280T | SP1 |
| 1 | WBL2UOAGQR05CLR | WBL2UOAGQR05CLR | SW1 |
| 1 | PEC16-2215F-S0024 | PEC16-2215F | SW2 |
| 1 | IRM-45-12 | IRM-45 | TR1 |
| 1 | 750315371 | MURATA_78615 | TR2 |
| 3 | ERZE14A431 | VARISTOR_14MM_RM7.5MM | VAR1, VAR2, VAR3 |
| 1 | BZT52-B5V1 | SOD123 | ZD1 |
| 1 | SMF60CA | SODFL3718X130N | ZD3 |
| 1 | SMF16CA | SODFL3718X130N | ZD4 |
| 1 | LTST-C170KGKT | LED_LTST-C170KGKT_LTO-L | LED1 |
| 4 | LTST-C170KRKT | LED_LTST-C170KGKT_LTO-L | LED2, LED3, LED5, LED6 |
| 16 | BAS316 | SOD-323_1P8X1P35_ONS-M | D1, D2, D3, D4, D5, D6, D7, D8 +8 |
| 2 | MBR0530T3G | SOD123 | D13, D14 |
| 1 | SKL16 | SOD123 | D15 |
| 2 | 60R@100MHz | BEAD0603 | FB1, FB5 |
| 1 | LSMCA160808T180NGR | BEAD0603 | FB2 |
| 2 | BLE18PS080SN1D | BEAD0603 | FB3, FB4 |
| 1 | 6u8 | IND_0606306R8MA1_YAG | L1 |
| 1 | 2200HT-221-V-RC | BOURNS_2200 | L2 |
| 1 | RN222-4-02-3M3 | BOURNS_7100_COMBO | L3 |
| 1 | 2u2 | INDPM7166X300N | L4 |
| 2 | 1u | INDPM7166X300N | L5, L7 |
| 1 | DLW21SN900SQ2L | IND_DLW21S_0805_MUR-M | L6 |
| 8 | ECMF4-2450A60N10 | ECMF42450A60N10 | L8, L9, L10, L11, L12, L13, L14, L15 |
| 11 | 10u | C_0805_2012Metric | C1, C3, C26, C29, C35, C49, C54, C88 +3 |
| 46 | 100n | C_0603_1608Metric | C2, C4, C9, C10, C12, C15, C16, C27 +38 |
| 4 | 10p | C_0603_1608Metric | C5, C6, C74, C75 |
| 2 | 4u7 | C_0603_1608Metric | C7, C122 |
| 9 | 10n | C_0603_1608Metric | C8, C13, C20, C22, C31, C33, C67, C68 +1 |
| 8 | 1u | C_0603_1608Metric | C11, C18, C30, C38, C52, C57, C59, C60 |
| 1 | CE5R5105HF-ZJ | CE5R5105HF-ZJ | C14 |
| 1 | 33n/Y2 | CAP_B32022_3333_TDK | C17 |
| 2 | EEEFK1V470P | CAPAE660X610N | C19, C56 |
| 3 | 100n/X2 | C150-054X183 | C21, C23, C28 |
| 2 | 2n2/Y2 | C075-042X103 | C24, C25 |
| 2 | 47p | C_0603_1608Metric | C36, C94 |
| 12 | 22u | C_0805_2012Metric | C37, C39, C40, C41, C42, C43, C44, C45 +4 |
| 1 | 1n | C_0603_1608Metric | C62 |
| 2 | 33p/1kV | C_1206_3216Metric | C63, C64 |
| 1 | 2u2 | C_0603_1608Metric | C65 |
| 22 | 100n | C_0402_1005Metric | C70, C71, C72, C73, C76, C77, C78, C79 +14 |
| 3 | 100u | CAP-ASLI_5X5.5_DXL_ | C114, C117, C118 |
| 2 | 330p | C_0603_1608Metric | C120, C121 |
| 4 | 10n/200V | C_1206_3216Metric | C123, C135, C138, C139 |
| 3 | 330R | R_0603_1608Metric | R3, R4, R7 |
| 27 | 10K | R_0603_1608Metric | R5, R6, R8, R9, R12, R17, R21, R26 +19 |
| 7 | 100K | R_0603_1608Metric | R10, R36, R37, R42, R43, R72, R77 |
| 5 | 100R | R_0603_1608Metric | R11, R19, R25, R33, R57 |
| 2 | 1K | R_0603_1608Metric | R15, R55 |
| 3 | 47K | R_0603_1608Metric | R16, R38, R90 |
| 5 | 1K8 | R_0603_1608Metric | R18, R20, R28, R85, R86 |
| 3 | 18K | R_0603_1608Metric | R23, R52, R53 |
| 2 | 12K | R_0603_1608Metric | R24, R74 |
| 5 | 4K7 | R_0603_1608Metric | R27, R30, R39, R48, R49 |
| 3 | 3K3 | R_0603_1608Metric | R29, R51, R54 |
| 2 | 33K/0.5W | R_0805_2012Metric | R31, R32 |
| 6 | 470K | R_0805_2012Metric | R34, R35, R87, R88, R95, R96 |
| 1 | 36K5 | R_0603_1608Metric | R44 |
| 1 | 11K8 | R_0603_1608Metric | R45 |
| 1 | 0R | R_0603_1608Metric | R46 |
| 1 | 39K | R_0603_1608Metric | R50 |
| 3 | 200K | R_0603_1608Metric | R68, R69, R75 |
| 1 | 20K | R_0603_1608Metric | R79 |
| 1 | 7K5 | R_0603_1608Metric | R92 |
| 2 | 68R | R_0603_1608Metric | R93, R94 |
BB3plus mainboard design files
The KiCad project lives in the eez-open/eez-bb3plus repository on GitHub; these links point at the commit this page was built from.
BB3plus mainboard: common questions
What microcontroller does the BB3plus mainboard use?
The BB3plus mainboard is built around the STM32G071R8T6, from the STM32 family.
How big is the BB3plus mainboard PCB?
The BB3plus mainboard measures 233 × 230.5 mm, has 4 copper layers and is 1.605 mm thick.
How many components are on the BB3plus mainboard?
353 components, from 116 distinct parts. The full bill of materials is listed on this page.
Where can I download the BB3plus mainboard design files?
From the eez-open/eez-bb3plus repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the BB3plus mainboard design in my own project?
Yes, under the terms of its TAPR-OHL-1.0 license, which eez-open chose for the repository.
Can I test firmware for the BB3plus mainboard 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.
More boards in eez-bb3plus
STM32BB3plus test mainboard
180.5 × 176 mm262 parts4LTAPR-OHL-1.012
STM32BB3plus USB hub test
144.5 × 103 mm223 parts4LTAPR-OHL-1.012
BB3plus DVID TFT display
136 × 92 mm50 parts2LTAPR-OHL-1.012
BB3plus DSI TFT display
136 × 92 mm28 parts2LTAPR-OHL-1.012
DIB2 USB adapter
91.4 × 92.5 mm11 parts4LTAPR-OHL-1.012
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