RelayBoard
lindamao-waterloop·waterloop_electrical·RelayBoard/RelayBoard.kicad_pcb
About the RelayBoard PCB
RelayBoard is an open source STM32 PCB design by lindamao-waterloop, published on GitHub. It is a 2-layer board measuring 52.8 × 38.1 mm, with 57 components from 24 distinct parts.
Its main chip is the STM32F745VEHx, from the STM32 family. Other key parts include the KSZ8863RLL, TJA1051T-3 and LF33_TO252. By type, the board carries 21 capacitors, 18 resistors, 10 connectors, 4 ICs, 2 inductors and 1 crystal.
From the project
Version control for the Waterloop Electrical Team
Main components on the RelayBoard
RelayBoard bill of materials (BOM)
57 components, 24 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32F745VEHx | TFBGA-100_8x8mm_Layout10x10_P0.8mm | U1 |
| 1 | KSZ8863RLL | QFP50P900X900X160-48N | U2 |
| 1 | TJA1051T-3 | SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | LF33_TO252 | TO-252-2 | U4 |
| 1 | ECS-2520SMV-250-GP-TR | Oscillator_SMD_ECS_2520MV-xxx-xx-4Pin_2.5x2.0mm | X1 |
| 1 | Micro_SD_Card | PJS008U30000 | J1 |
| 1 | Screw_Terminal_01x02 | 1725656 | J2 |
| 1 | Conn_01x04_Male | JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J3 |
| 4 | 505004-0812 | 5050040812 | J4, J10, J11, J12 |
| 2 | SI-52008-F | BEL_SI-52008-F | J7, J8 |
| 1 | Conn_01x04_Male | PinHeader_1x04_P2.54mm_Vertical | J13 |
| 1 | Diode | D_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1 |
| 2 | Ferrite_Bead_Small | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB1, FB2 |
| 5 | 22uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C1, C4, C5, C6, C7 |
| 12 | 0.1uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C2, C8, C9, C10, C11, C12, C13, C14 +4 |
| 3 | 10uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C3, C19, C20 |
| 1 | 1000uF EEE-FT1A102AV | CP_Elec_8x10.5 | C22 |
| 1 | 10kΩ | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1 |
| 1 | 11.8kΩ, 1.0% | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R2 |
| 8 | 49.9Ω, 1.0% | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R3, R4, R5, R6, R7, R8, R9, R10 |
Show 4 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | 60Ω | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R11, R12, R13, R14 |
| 1 | 300mΩ | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R15 |
| 2 | 4.7kΩ | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R16, R17 |
| 1 | 120Ω | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R18 |
RelayBoard design files
The KiCad project lives in the lindamao-waterloop/waterloop_electrical repository on GitHub; these links point at the commit this page was built from.
RelayBoard: common questions
What microcontroller does the RelayBoard use?
The RelayBoard is built around the STM32F745VEHx, from the STM32 family.
How big is the RelayBoard PCB?
The RelayBoard measures 52.8 × 38.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the RelayBoard?
57 components, from 24 distinct parts. The full bill of materials is listed on this page.
Where can I download the RelayBoard design files?
From the lindamao-waterloop/waterloop_electrical repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the RelayBoard design in my own project?
The repository has no license, so all rights stay with lindamao-waterloop. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the RelayBoard 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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