4 layers60 × 60 mm New Servo Control, the printed circuit board in 3D

New Servo Control

Hardware design and schematics for a custom servo-driven robotic platform featuring matrix keypad interface (KiCad).

Size: 60 × 60 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 38
Nets: 64
Pads: 194
Tracks, vias: 275, 65
Pours: 5
Routed: Yes
KiCad: KiCad 7 (file 20221018)
Created: 7 Oct 2026
Updated: 7 Oct 2026

Overview

New Servo Control is an open-source printed circuit board by baraug21, from the baraug21/stm32-servo-robot repository on GitHub, published under the MIT licence. It is a 4-layer board of 60 × 60 mm with 38 parts on 64 nets, routed with 275 tracks and 65 vias.

It is built around the AMS1117CD-3.3, USBLC6-2SC6 and SS34A. Its parts include 15 capacitors, 6 connectors, 4 resistors, 3 ICs and 2 diodes. It belongs with the robots and motor control boards and the STM32 boards of this library.

Main components

README

README.md

Servo-Driven Robot (WIP)

Project Status: Work in Progress This project is currently under active development as a team project. Hardware design (schematics and PCB layout) is completed, while the firmware implementation (motor drivers and user interface) is currently being written.

Overview

A custom robotic platform featuring servo motor control (PWM) and a matrix keypad interface...

Category and platform

Robots and motor control STM32

Project files

Show this board on your page

https://pcbkit.io/boards/baraug21/stm32-servo-robot

The board's own page, for a message or a post.

Source

Repository: baraug21/stm32-servo-robot
Board file: hardware/KiCad-source-files/New_Servo_Control.kicad_pcb
Commit: fa7a6ef
Licence: MIT

Parts

Qty	Value	Footprint	References
7	100n	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C5, C6, C8, C9, C10, C11, C12
4	MountingHole_Pad	MountingHole:MountingHole_3.2mm_M3_Pad_Via	H1, H2, H3, H4
2	10u	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C4, C7
2	18p	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C13, C14
1	1000u	Capacitor_THT:CP_Radial_D10.0mm_P5.00mm	C1
1	10k	Potentiometer_THT:Potentiometer_Piher_PT-6-H_Horizontal	RV1
1	10k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R3
1	10u	Capacitor_THT:CP_Radial_D8.0mm_P5.00mm	C2
1	12MHz (HC-49)	Crystal:Crystal_HC49-U_Vertical	Y1
1	1k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R4
1	22u (tantal)	Capacitor_Tantalum_SMD:CP_EIA-3528-12_Kemet-T_Pad1.50x2.35mm_HandSolder	C3
1	330 @ 100MHz	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	FB1
1	33k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R1
1	4.7u (ceramic low ESR)	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C15
1	4x4 keyboard	Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical	J5
1	82k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R2
1	AMS1117CD-3.3	Package_TO_SOT_SMD:SOT-223-3_TabPin2	U1
1	LED	LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder	D2
1	RA050-60	Fuse:Fuse_BelFuse_0ZRE0025FF_L9.6mm_W3.8mm	F1
1	SS34A	Diode_SMD:D_SMA_Handsoldering	D1
1	STM32F401RBTx	Package_QFP:LQFP-64_10x10mm_P0.5mm	U3
1	Screw_Terminal_01x02	TerminalBlock_RND:TerminalBlock_RND_205-00045_1x02_P5.00mm_Horizontal	J3
1	Servo PWM	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J6
1	USART	Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical	J4
1	USBLC6-2SC6	Package_TO_SOT_SMD:SOT-23-6	U2
1	USB_B_Micro	Connector_USB:USB_Micro-B_Molex_47346-0001	J1
1	uC programming	Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical	J2

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Questions

How big is the New Servo Control PCB?

It measures 60 × 60 mm and has 4 copper layers, 1.6 mm thick.

What parts does the New Servo Control use?

38 parts, built around the AMS1117CD-3.3, USBLC6-2SC6 and SS34A. 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 New Servo Control KiCad files?

From the baraug21/stm32-servo-robot repository on GitHub, at the commit this page was made from: the board is hardware/KiCad-source-files/New_Servo_Control.kicad_pcb and its schematic hardware/KiCad-source-files/New_Servo_Control.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the New Servo Control 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).