ROBRO
About the ROBRO PCB
ROBRO is an open source STM32 PCB design by louismeuret, published on GitHub. It is a 4-layer board measuring 60 × 60 mm, with 122 components from 45 distinct parts.
Its main chip is the STM32G474CBT6, from the STM32 family. Other key parts include the STGIPN3H60T-H, TLV9064, HUSB238A-BB001-QN16R and AP63203WU. By type, the board carries 46 capacitors, 45 resistors, 12 diodes, 5 ICs, 5 connectors and 2 crystals.
Main components on the ROBRO
ROBRO bill of materials (BOM)
122 components, 45 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32G474CBT6 | LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | STGIPN3H60T-H | NDIP-26_12P55X29P25_STM | U2 |
| 1 | TLV9064 | SOIC-14_3.9x8.7mm_P1.27mm | U3 |
| 1 | HUSB238A-BB001-QN16R | WQFN-16-1EP_3x3mm_P0.5mm_EP1.75x1.75mm | U4 |
| 1 | AP63203WU | TSOT-23-6 | U5 |
| 1 | AO3401A | SOT-23 | Q1 |
| 1 | 16MHz 10pF | Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | 32.7kHz 12.5uF | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y2 |
| 2 | CONN_01X09 Conn_01x09 | PinHeader_1x09_P2.54mm_Vertical | J1, J2 |
| 1 | Conn_Motor | 3POS_3.5_TH | J3 |
| 1 | USB_C_16P | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J4 |
| 1 | Conn_VDC | DB301V-3.5-2P-GN-S | J5 |
| 1 | Polyfuse_Small | Fuse_1812_4532Metric_Pad1.30x3.40mm_HandSolder | F1 |
| 2 | SW_Push | SW_SPST_TL3342 | SW1, SW2 |
| 1 | 100 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | ←R30-R29 |
| 3 | LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1-D3, D2, D3 |
| 4 | BAT54S | SOT-23 | D5, D6, D7, D8 |
| 5 | 18V | D_SOD-123 | D9, D10, D11, D12, D13 |
| 1 | 120 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | FB1 |
| 1 | 4U7 4u7 | L_Changjiang_FXL0530 | L1 |
Show 25 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 10P 10p | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C5 |
| 2 | 15P 15p | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C4 |
| 13 | 100N 100n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C7, C8, C9, C11, C13, C14, C15 +5 |
| 1 | 4N7 4n7 | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C6 |
| 1 | 10N 10n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C10 |
| 4 | 1u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C12, C17, C29, C39 |
| 7 | 1n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C19, C20, C22, C23, C24, C27, C28 |
| 1 | 470N 470n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C21 |
| 2 | 10U 10u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C25, C40 |
| 4 | 100N 100n | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C31, C36, C37, C38 |
| 3 | 2U2 2u2 | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C32, C33, C34 |
| 4 | 47U 47u | CP_Radial_D10.0mm_P5.00mm | C35, C43, C45, C46 |
| 2 | 22U 22u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C42, C44 |
| 9 | 5K1 5k1 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R3, R35, R37, R39, R45, R46 +1 |
| 6 | 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4-R6, R5, R6, R27, R28, R41 |
| 2 | 22 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R8, R9 |
| 1 | 2M | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R10 |
| 4 | 750k | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R11-13, R14-R16, R18-20, R20-R22 |
| 4 | 750K 750k | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R12, R15, R17, R21 |
| 4 | 750K 5k1 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R13, R16, R19, R22 |
| 6 | 100 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R23, R24, R25, R26, R29, R43 |
| 3 | 50M 50m | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R31, R32, R33 |
| 4 | 91K 91k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R34, R36, R38, R42 |
| 1 | 0 | R_0201_0603Metric_Pad0.64x0.40mm_HandSolder | R40 |
| 1 | 11K 11k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R44 |
ROBRO design files
The KiCad project lives in the louismeuret/ROBRO repository on GitHub; these links point at the commit this page was built from.
- Layoutmdrive/mdrive.kicad_pcb
- Schematicmdrive/mdrive.kicad_sch
- BOMmdrive/production/bom.csv
ROBRO: common questions
What microcontroller does the ROBRO use?
The ROBRO is built around the STM32G474CBT6, from the STM32 family.
How big is the ROBRO PCB?
The ROBRO measures 60 × 60 mm, has 4 copper layers and is 1.600198 mm thick.
How many components are on the ROBRO?
122 components, from 45 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the ROBRO design files?
From the louismeuret/ROBRO repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the ROBRO design in my own project?
The repository has no license, so all rights stay with louismeuret. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the ROBRO 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.
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