Microduck Audio AMP R3
About the Microduck Audio AMP R3 PCB
Microduck Audio AMP R3 is an open source PCB design by ldcyes, published on GitHub. It is a 2-layer board measuring 28 × 20 mm, with 12 components from 11 distinct parts.
Other key parts include the MAX98357AETE+T. By type, the board carries 4 connectors, 4 resistors, 2 capacitors, 1 IC and 1 fuse.
It belongs with the audio designs in this gallery.
From the project
本仓库整理 Microduck 的结构、电气、步态数值验证，以及 RK3576 驱动和训练适配源。当前是工程仿真预发布，尚未通过实物制造与正常步速行走验收。
本仓库整理 Microduck 的结构、电气、步态数值验证，以及 RK3576 驱动和训练适配源。当前是工程仿真预发布，尚未通过实物制造与正常步速行走验收。
R29 将嘴部软件行程收至 0–10° 并修正下头壳；指定腿罩/电机配对在四条新质量慢速轨迹中的最低保守名义间隙下界为 11.407 mm。31 根线的防磨件和四工况动力学已补充，但嘴部闭合扭矩仍超过现行 0.05 Nm 结构限制，连续线束及制造公差尚无实物证明，不能放行行走。
沿用R25：31根头部导线改为底部接入，保留前盖与原外形比例；收拢活动线束并取消原侧面专用线孔。底部走线特写。仍为工程候选，离散转头检查不代表连续运动或实物验收。
历史四步回放：R27：R26整机运动回放。 使用已保存的195.44秒实际积分轨迹，逐帧驱动完整R26装配并复核覆盖件的刚体干涉增量；R26质量下的动力学和实物行走仍待验收。
Main components on the Microduck Audio AMP R3
Microduck Audio AMP R3 bill of materials (BOM)
12 components, 11 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MAX98357AETE+T | MAX98357A_T1633_4 | U1 |
| 1 | SM08B-SRSS-TB(LF)(SN) SH8 | JST_SH_SM08B-SRSS-TB_1x08-1MP_P1.00mm_Horizontal | J1 |
| 1 | S2B-PH-K-S(LF)(SN) 5V INPUT | JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J2 |
| 1 | SM02B-SRSS-TB(LF)(SN) SH2 | JST_SH_SM02B-SRSS-TB_1x02-1MP_P1.00mm_Horizontal | J3 |
| 1 | SM05B-SRSS-TB(LF)(SN) SH5 | JST_SH_SM05B-SRSS-TB_1x05-1MP_P1.00mm_Horizontal | J4 |
| 1 | 0467.500NR 0.5A 32V FAST | Fuse_0603_1608Metric | F1 |
| 1 | GRM188R71C104KA01D 100nF 16V X7R | C_0603_1608Metric | C1 |
| 1 | GRM188R61A106KE69D 10uF 10V X5R | C_0603_1608Metric | C2 |
| 1 | RC0603FR-07100KL 100k / 15dB | R_0603_1608Metric | R1 |
| 1 | RC0603FR-07100KL 100k / OFF | R_0603_1608Metric | R2 |
| 2 | CRCW251210R0FKEG 10R 1% 1W | R_2512_6332Metric | R3, R4 |
Microduck Audio AMP R3 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 Audio AMP R3: common questions
How big is the Microduck Audio AMP R3 PCB?
The Microduck Audio AMP R3 measures 28 × 20 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Microduck Audio AMP R3?
12 components, from 11 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 Audio AMP R3 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 Audio AMP R3 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.
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