2 layers130 × 100 mm Roly power io, the printed circuit board in 3D

Roly power io

szf2020/Roly1

Roly — 50cm 双轮自平衡 AI 陪伴机器人 · 开源全栈(PCB/CAD/固件/ROS2/平衡控制/感知/表情),从零端到端

Size: 130 × 100 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 60
Nets: 33
Pads: 183
Tracks, vias: 641, 59
Pours: 2
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 22 Jun 2026
Updated: 22 Jun 2026

Overview

Roly power io is an open-source printed circuit board by szf2020, from the szf2020/Roly repository on GitHub. It is a 2-layer board of 130 × 100 mm with 60 parts on 33 nets, routed with 641 tracks and 59 vias.

It is built around the SN65HVD230D, MMBT3904 and SMAJ33A, with the WS2812B among its other parts. Its parts include 17 resistors, 16 connectors, 13 capacitors, 6 diodes and 2 ICs. It belongs with the STM32 boards of this library.

Main components

README

hardware/roly-power-io/README.md

S2 配电/互联板 — 无头生成流水线

全程代码生成 + 命令行(无 GUI 点选),可复现。原理图 → 布局 → 布线 → Gerber。

流程

text

roly_power_io.py   (skidl: Python 描述原理图 → netlist + ERC)
        │  kinet2pcb
        ▼
*.kicad_pcb        (netlist → 空板带封装)
        │  place_board.py   (pcbnew API: 130×100 板框 + 按值布局元件)
        ▼
布局后 .kicad_pcb
        │  dsn_power_class.py (导出 DSN + 注入 power netclass 1.5mm)
        ▼
*.dsn              (Specctra)
        │  Freerouting 1.9.0 (自动布线)
        ▼
*.ses              (布线结果)
        │  route_import.py (导入 SES + GND/VBAT 双面覆铜)
        ▼
布线后 .kicad_pcb
        │  kicad-cli pcb drc / export gerbers,drill,pos
        ▼
gerber/ + roly-power-io-gerber.zip   (嘉立创可上传;DFM 待跑)

复现命令

bash

# 依赖:KiCad 10 + pip install skidl kinet2pcb · Freerouting 1.9.0(Java 17)
KISYSMOD=... python3 roly_power_io.py            # 原理图 + ERC(0 错)
python3 -m kinet2pcb --nets roly_power_io.net -o roly_power_io.kicad_pcb
python3 place_board.py                            # 布局
python3 dsn_power_class.py                        # 导出 DSN(功率类 1.5mm)
java -jar freerouting-1.9.0.jar -de roly.dsn -do roly.ses -mp 100
python3 route_import.py                           # 导入布线 + 覆铜
kicad-cli pcb drc roly_power_io.kicad_pcb         # 0 unconnected
kicad-cli pcb export gerbers -o gerber/ roly_power_io.kicad_pcb

关键设计点

45A VBAT/GND 不走线,走整面覆铜(IPC-2221:45A@2oz 需 28.8mm 线宽 → 不现实)。见功率/热分析。
无有源反接保护(LTC4359 在审计中发现会上电死锁)→ keyed XT60 + 外部保险/急停。见审计。
接线/引脚定义见接线速查;电流/续航见 power_budget.py。

状态

ERC 0 错 · DRC 0 unconnected(库/丝印 warnings 豁免)· Gerber 已导出。JLCPCB DFM 待实物下单时跑通存档(审计退出条件 ⑥)——在此之前不称"可下单"。

Parts

Qty	Value	Footprint	References
12	4.7k	Resistor_SMD:R_0603_1608Metric	R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14
4	100n	Capacitor_SMD:C_0603_1608Metric	C9, C10, C12, C13
4	1uF/50V	Capacitor_SMD:C_0805_2012Metric	C3, C4, C5, C6
3	10uF	Capacitor_SMD:C_0805_2012Metric	C7, C8, C11
2	10k	Resistor_SMD:R_0603_1608Metric	R2, R17
2	470uF/35V	Capacitor_THT:CP_Radial_D10.0mm_P5.00mm	C1, C2
2	CAN ESD 24V	Diode_SMD:D_SOD-323	D2, D3
1	100k	Resistor_SMD:R_0603_1608Metric	R16
1	120	Resistor_SMD:R_0805_2012Metric	R1
1	1N4148	Diode_SMD:D_SOD-323	D6
1	1N4148(降 VDD~4.4V 配 3.3V DIN)	Diode_SMD:D_SOD-323	D4
1	1k	Resistor_SMD:R_0603_1608Metric	R15
1	Buzzer 5V	Buzzer_Beeper:Buzzer_12x9.5RM7.6	BZ1
1	H1	MountingHole:MountingHole_3.2mm_M3	H1
1	H2	MountingHole:MountingHole_3.2mm_M3	H2
1	H3	MountingHole:MountingHole_3.2mm_M3	H3
1	H4	MountingHole:MountingHole_3.2mm_M3	H4
1	J_BAT XT60(经开关/急停/保险)	Connector_AMASS:AMASS_XT60-F_1x02_P7.20mm_Vertical	J1
1	J_BUCK12 22V->12V/15A	TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-04P_1x04_P5.00mm	J4
1	J_BUCK33 22V->3V3/1A	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J6
1	J_BUCK5 22V->5V/6A	TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-04P_1x04_P5.00mm	J5
1	J_CAN ->C620	Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical	J9
1	J_IMU ICM-42688	Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical	J15
1	J_M1 C620-1	Connector_AMASS:AMASS_XT30U-F_1x02_P5.0mm_Vertical	J2
1	J_M2 C620-2	Connector_AMASS:AMASS_XT30U-F_1x02_P5.0mm_Vertical	J3
1	J_MCU ->STM32G474	Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical	J16
1	J_SBC 5V->Rock5B+	Connector_AMASS:AMASS_XT30U-F_1x02_P5.0mm_Vertical	J8
1	J_SERVO 12V->舵机适配器	Connector_AMASS:AMASS_XT30U-F_1x02_P5.0mm_Vertical	J7
1	J_TOF1 VL53L1X	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J10
1	J_TOF2 VL53L1X	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J11
1	J_TOF3 VL53L1X	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J12
1	J_TOF4 VL53L1X	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J13
1	J_TOF5 VL53L1X	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J14
1	MMBT3904	Package_TO_SOT_SMD:SOT-23	Q1
1	SMAJ33A	Diode_SMD:D_SMA	D1
1	SN65HVD230	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U1
1	TCA9548APWR	Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm	U2
1	WS2812B	LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm	D5

Questions

How big is the Roly power io PCB?

It measures 130 × 100 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Roly power io use?

60 parts, built around the SN65HVD230D, MMBT3904, SMAJ33A and WS2812B. 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 Roly power io KiCad files?

From the szf2020/Roly repository on GitHub, at the commit this page was made from: the board is hardware/roly-power-io/roly_power_io.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Roly power io design in my own project?

Its repository states no licence, so its author keeps all rights: ask szf2020 before reusing the design.

Category and platform

STM32

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/szf2020-roly" title="Roly power io in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/szf2020-roly.jpg" alt="Roly power io" width="1200" height="900">

A picture that opens the board, for a README

[![Roly power io](https://pcbkit.io/embed/boards/szf2020-roly.jpg?size=s)](https://pcbkit.io/boards/szf2020-roly)

Source

Repository: szf2020/Roly
Board file: hardware/roly-power-io/roly_power_io.kicad_pcb
Commit: 7a587b0
Licence: Not stated

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