Microduck Entry 5V R22

ldcyes·OpenDuck·hardware/r22-candidate/entry/Microduck_Entry_5V_R22.kicad_pcb

About the Microduck Entry 5V R22 PCB

Microduck Entry 5V R22 is an open source Raspberry Pi PCB design by ldcyes, published on GitHub. It is a 4-layer board measuring 52 × 42 mm, with 54 components from 33 distinct parts.

Its main chip is the SM10B-SRSS-TB(LF)(SN), from the Raspberry Pi family. Other key parts include the INA226AIDGSR, ADS1115IDGSR, LMZM33603RLRR and TPS2117DRLR. By type, the board carries 18 capacitors, 14 resistors, 8 connectors, 4 ICs and 1 fuse.

From the project

已完成两块实际四层PCB、原理图与本地库、BOM、接口、加工图及配套安装CAD。它们是用于工程审查的R22候选；现行R20结构/R21步态基线保留。没有样机，尚未完成制造、温升、动态回生、低电量及实物行走验收。

若整机采用此候选，板型由12种减为11种，实际板数由13块减为12块（LEG5仍有左右两块）。这不是整机占用空间或续航同比改善；合板最大75 mm长度必须按阶梯轮廓检查。

- 5V入口板说明：打开 entry/MicroduckEntry5VR22.kicadpro。58个封装，原159个原理图针与200个数字焊盘实例映射保持；五个SH同系列插头改顶插，保留原线端插壳及线序。 - 舵机电源＋回生说明：打开 powerregen/MicroduckPowerRegenR22.kicadpro。84个封装、292个焊盘，三页原理图；只合并SERVOBUS/GND，其他控制与辅助电源网保持分离。J1改BM08顶插。 - 入口板安装图与STEP、回生电容托架最终装配说明。电容保留EEUFR1C222（2200µF/16V），改卧装并独立支承，须先在机外完成成形、固定与焊接。 -…

Main components on the Microduck Entry 5V R22

INA226AIDGSR ADS1115IDGSR LMZM33603RLRR TPS2117DRLR

Microduck Entry 5V R22 bill of materials (BOM)

54 components, 33 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	INA226AIDGSR BATTERY INA226 0x40	TI_DGS0010A_Manufacturer_1p45x0p30	U1
1	ADS1115IDGSR NTC AND EXCITATION 0x48	TI_DGS0010A_Manufacturer_1p45x0p30	U2
1	LMZM33603RLRR 4S to 5.10V 3A MODULE	LMZM33603_RLR	U3
1	TPS2117DRLR BENCH PRIORITY REVERSE BLOCK	TPS2117_DRL	U4
1	SM02B-SRSS-TB(LF)(SN) NTC BAT 10k 3977K	JST_SH_SM02B-SRSS-TB_1x02-1MP_P1.00mm_Horizontal	J1
1	SM02B-SRSS-TB(LF)(SN) NTC TDK 10k 3977K	JST_SH_SM02B-SRSS-TB_1x02-1MP_P1.00mm_Horizontal	J2
1	BM02B-SRSS-TB(LF)(SN) NTC BRAKE 10k 3977K	JST_SH_BM02B-SRSS-TB_1x02-1MP_P1.00mm_Vertical	J3
1	SM10B-SRSS-TB(LF)(SN) TO CM4 LOGIC CTRL	JST_SH_SM10B-SRSS-TB_1x10-1MP_P1.00mm_Horizontal	J4
1	BM08B-SRSS-TB(LF)(SN) TO TDK POWER CTRL	JST_SH_BM08B-SRSS-TB_1x08-1MP_P1.00mm_Vertical	J5
2	BM03B-SRSS-TB(LF)(SN) TMP302 THERMAL STOP	JST_SH_BM03B-SRSS-TB_1x03-1MP_P1.00mm_Vertical	J6, J7
1	BM05B-SRSS-TB(LF)(SN) BRAKE INA226 0x42 TELEMETRY	JST_SH_BM05B-SRSS-TB_1x05-1MP_P1.00mm_Vertical	J8
1	0448002.MR 2A 125V LOGIC INPUT	Fuse_Littelfuse_448	F1
1	WSL27262L000FEA 2mOhm 1% 3W KELVIN	WSL2726_Kelvin	RS1
1	SOLDER AWG16 BAT_FUSED	WirePad_2p4mm_6mm	W1
2	SOLDER AWG16 GND	WirePad_2p4mm_6mm	W2, W4
1	SOLDER AWG16 BAT_MON	WirePad_2p4mm_6mm	W3
1	SOLDER AWG20 BENCH_5V	WirePad_2p4mm_6mm	W5
2	SOLDER AWG20 GND	WirePad_2p4mm_6mm	W6, W8
1	SOLDER AWG20 SYSTEM_5V	WirePad_2p4mm_6mm	W7
8	GRM188R71H104KA93D 100nF	C_0603_1608Metric	C1, C2, C3, C4, C5, C6, C7, C17

Show 13 more

Qty	Part	Footprint	Refs
1	GRM1885C1H101JA01D 100pF C0G	C_0603_1608Metric	C8
2	GRM32ER71H106KA12L 10uF 50V X7R	C_1210_3225Metric	C9, C10
1	EEUFR1V101 100uF 35V	CP_Radial_D8.0mm_P3.50mm	C11
4	GRM32ER71E226KE15L 22uF 25V X7R	C_1210_3225Metric	C12, C13, C14, C15
1	GRM21BR71A106KE51L 10uF 10V	C_0805_2012Metric	C16
1	EEUFR1A271 270uF 10V	CP_Radial_D6.3mm_P2.50mm	C18
2	RT0603BRD0710RL 10R 0.1%	R_0603_1608Metric	R1, R2
4	RT0603BRD0710KL 10k 0.1%	R_0603_1608Metric	R3, R4, R5, R14
4	ERJ-3EKF1001V 1k	R_0603_1608Metric	R6, R7, R8, R9
1	RT0603BRD0741KL 41.0k 0.1%	R_0603_1608Metric	R10
1	RT0603BRD0710KL 10.0k 0.1%	R_0603_1608Metric	R11
1	RT0603BRD0788K7L 88.7k 0.1%	R_0603_1608Metric	R12
1	RT0603BRD0732K4L 32.4k 0.1%	R_0603_1608Metric	R13

Microduck Entry 5V R22 design files

The KiCad project lives in the ldcyes/OpenDuck repository on GitHub; these links point at the commit this page was built from.

Microduck Entry 5V R22: common questions

What microcontroller does the Microduck Entry 5V R22 use?

The Microduck Entry 5V R22 is built around the SM10B-SRSS-TB(LF)(SN), from the Raspberry Pi family.

How big is the Microduck Entry 5V R22 PCB?

The Microduck Entry 5V R22 measures 52 × 42 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Microduck Entry 5V R22?

54 components, from 33 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 Microduck Entry 5V R22 design files?

From the ldcyes/OpenDuck 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 Microduck Entry 5V R22 design in my own project?

The repository has no license, so all rights stay with ldcyes. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Microduck Entry 5V R22 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.