4 layers18 × 50 mm
STM32H503CBT6
r-pv/STM32H503CBT6
ST development board based on the STM32H503CBT6 MCU. Compatible with Arduino.
37 partsGPL-3.0
4 layers118.4 × 54.5 mm
Servio PCB
TVavrinec/Servio-PCB- Size
- 118.4 × 54.5 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 79
- Nets
- 80
- Pads
- 286
- Tracks, vias
- 598, 104
- Pours
- 14
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 16 Sep 2023
- Updated
- 24 Jan 2026
Overview
Servio PCB is an open-source printed circuit board by TVavrinec, from the TVavrinec/Servio-PCB repository on GitHub, published under the MIT licence. It is a 4-layer board of 118.4 × 54.5 mm with 79 parts on 80 nets, routed with 598 tracks and 104 vias.
It is built around the STM32H503CBT6. Its parts include 40 connectors, 18 capacitors, 10 resistors, 4 ICs and 4 diodes. It belongs with the STM32 boards of this library.
Main components
1README
README.mdServio PCB
| pin | function | description |
|---|---|---|
| C1 | GND | ground for main connector |
| C2 | VCC | input power for main connector |
| C3 | TX | UART communication TX pin |
| C4 | RX | UART communication RX pin |
| S1 | ENC.CLK,POT.OUT | CLK for SPI encoder, input pin for potentiometer |
| S2 | ENC.MISO,QE.CHB | MISO for SPI encoder, B channel for quadrature encoder |
| S3 | ENC.MOSI,QE.CHA | MOSI for SPI encoder, A channel for quadrature encoder |
| S4 | GND | GND for side connector |
| S5 | VDD 3V3 | MCU voltage for side connector |
| M1 | M1 | motor pin 1 |
| M2 | M2 | motor pin 2 |
| B1 | VDD 3V3 | voltage for boot mode |
| B2 | BOOT0 | pin triggering boot mode |
Parts
79| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | Conn_01x01 | RKL-Connectors:YZ157015035P-01-contact_pad | J1, J2, J3, J4, J5, J6, J7, J8, J9, J12, J39, M1, M2 |
| 9 | Conn_01x01 | RKL-Connectors:YZ157015035P-01 | J13, J14, J15, J16, J17, J19, J20, J21, J22 |
| 5 | 100n | Capacitor_SMD:C_0201_0603Metric | C2, C3, C4, C5, C6 |
| 5 | 10u | Capacitor_SMD:C_0603_1608Metric | C10, C11, C12, C13, C15 |
| 5 | Conn_01x04 | Connector_JST:JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical | J11, J24, J28, J29, J30 |
| 5 | Conn_01x05 | Connector_PinHeader_2.00mm:PinHeader_1x05_P2.00mm_Vertical | J10, J23, J25, J26, J27 |
| 4 | 1k | Capacitor_SMD:C_0201_0603Metric | R1, R4, R5, R6 |
| 4 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J34, J35, J37, J38 |
| 3 | 1u | Capacitor_SMD:C_0402_1005Metric | C7, C17, C18 |
| 3 | 2u2 | Capacitor_SMD:C_0402_1005Metric | C8, C9, C16 |
| 3 | LED | LED_SMD:LED_0603_1608Metric | D2, D3, D4 |
| 2 | 10k | Resistor_SMD:R_0201_0603Metric | R3, R10 |
| 2 | 1k | Capacitor_SMD:C_0603_1608Metric | R8, R9 |
| 2 | Jumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP1, JP2 |
| 1 | 100k | Resistor_SMD:R_0201_0603Metric | R2 |
| 1 | 10n | Capacitor_SMD:C_0201_0603Metric | C14 |
| 1 | 2k | Capacitor_SMD:C_0603_1608Metric | R7 |
| 1 | 33u | Inductor_SMD:L_1008_2520Metric | L1 |
| 1 | 4u7 | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | 64Kbit | RKL-StandardPackages:XFBGA-6 | U4 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J36 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J33 |
| 1 | Conn_02x05_Odd_Even | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical | J31 |
| 1 | Conn_02x07_Odd_Even | Connector_PinHeader_1.27mm:PinHeader_2x07_P1.27mm_Vertical | J32 |
| 1 | DRV8251ADDAR | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.62x3.51mm_ThermalVias | U2 |
| 1 | LED_RGAB | LED_SMD:LED_LiteOn_LTST-C19HE1WT | D1 |
| 1 | MAX15062A | Package_DFN_QFN:DFN-8_2x2mm_P0.5mm | U3 |
| 1 | STM32H503CBT6 | Package_QFP:LQFP-48_7x7mm_P0.5mm | U1 |
Questions
How big is the Servio PCB PCB?
It measures 118.4 × 54.5 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Servio PCB use?
79 parts, built around the STM32H503CBT6. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Servio PCB KiCad files?
From the TVavrinec/Servio-PCB repository on GitHub, at the commit this page was made from: the board is mainBoard/mainBoard.kicad_pcb and its schematic mainBoard/DebuBoard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Servio PCB design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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