2 layers100 × 100 mm PwmController, the printed circuit board in 3D

PwmController

Size: 100 × 100 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 83
Nets: 64
Pads: 280
Tracks, vias: 0, 0
Pours: 1
Routed: Not yet
KiCad: KiCad 7 (file 20221018)
Created: 7 Mar 2023
Updated: 20 May 2026

Overview

PwmController is an open-source printed circuit board by bask185, from the bask185/Train-Science-DIY repository on GitHub. It is a 2-layer board of 100 × 100 mm with 83 parts on 64 nets.

It is built around the ATMEGA328-AU, 24LC256-I/P and LM311. Its parts include 19 switches, 16 resistors, 15 capacitors, 7 transistors and 5 ICs. It belongs with the AVR (ATmega, ATtiny) boards of this library.

Main components

Parts

Qty	Value	Footprint	References
10	SW_SPDT	custom_kicad_lib_sk:MTS_long_lever	SW601, SW602, SW603, SW604, SW605, SW606, SW607, SW608, SW609, SW610
9	SW_Push	custom_kicad_lib_sk:tactile_SMD_6mm	SW101, SW1001, SW1002, SW1003, SW1004, SW1005, SW1006, SW1007, SW1008
7	100nF	Capacitor_SMD:C_0603_1608Metric	C6, C701, C702, C703, C704, C705, C801
5	R_Potentiometer	custom_kicad_lib_sk:Potentiometer_Alps_RK09K_Single_Vertical	RV701, RV702, RV703, RV704, RV705
3			, ,
3	10k	custom_kicad_lib_sk:R_0603_smalltext	R502, R503, R603
3	1k	custom_kicad_lib_sk:R_0603_smalltext	R501, R504, R605
3	NPN_TOR	Package_TO_SOT_SMD:SOT-23	Q501, Q506, Q601
2	0R1	Resistor_SMD:R_1206_3216Metric	R101, R102
2	100nF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C302, C501
2	100nF	Capacitor_SMD:C_0402_1005Metric	C202, C601
2	12pF	Capacitor_SMD:C_0603_1608Metric	C201, C203
2	15k	custom_kicad_lib_sk:R_0603_smalltext	R301, R302
2	N-channel	Package_TO_SOT_SMD:SOT-23	Q503, Q505
2	P-channel	Package_TO_SOT_SMD:SOT-23	Q502, Q504
2	RJ12	custom_kicad_lib_sk:RJ12	J601, J602
1	100uF	Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder	C303
1	10k	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R202
1	150k	custom_kicad_lib_sk:R_0603_smalltext	R602
1	220k	custom_kicad_lib_sk:R_0603_smalltext	R606
1	22k	custom_kicad_lib_sk:R_0603_smalltext	R604
1	24LC256	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U801
1	330nF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C301
1	47k	custom_kicad_lib_sk:R_0603_smalltext	R601
1	6k2	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R201
1	ATmega328-A	Package_QFP:TQFP-32_7x7mm_P0.8mm	U202
1	Conn_01x04	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J801
1	Crystal_GND2	custom_kicad_lib_sk:crystal_arduino	Y201
1	HEADER_3x2	Connector_PinSocket_1.27mm:PinSocket_2x03_P1.27mm_Vertical	U201
1	Jack-DC	Connector_BarrelJack:BarrelJack_Horizontal	J101
1	L78L05_SOT89	Package_TO_SOT_SMD:SOT-89-3	U301
1	LED	LED_THT:LED_D3.0mm	D201
1	LM311	Package_SO:SOP-8_3.9x4.9mm_P1.27mm	U601
1	LOGO	custom_kicad_lib_sk:Train-Science logo small	G***
1	Screw_Terminal_01x12	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-12-5.08_1x12_P5.08mm_Horizontal	J104

The 78 most common of 83 parts.

Questions

How big is the PwmController PCB?

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

What parts does the PwmController use?

83 parts, built around the ATMEGA328-AU, 24LC256-I/P and LM311. 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 PwmController KiCad files?

From the bask185/Train-Science-DIY repository on GitHub, at the commit this page was made from: the board is PCB_SOURCE/pwmController/pwmController.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the PwmController design in my own project?

Its repository states no licence, so its author keeps all rights: ask bask185 before reusing the design.

Category and platform

AVR (ATmega, ATtiny)

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/bask185-train-science-diy-pwmcontroller" title="PwmController 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/bask185-train-science-diy-pwmcontroller.jpg" alt="PwmController" width="1200" height="900">

A picture that opens the board, for a README

[![PwmController](https://pcbkit.io/embed/boards/bask185-train-science-diy-pwmcontroller.jpg?size=s)](https://pcbkit.io/boards/bask185-train-science-diy-pwmcontroller)

Source

Repository: bask185/Train-Science-DIY
Board file: PCB_SOURCE/pwmController/pwmController.kicad_pcb
Commit: 108af0e
Licence: Not stated

Similar boards

2 layers106.6 × 25.5 mm
PanelController
bask185/PanelX

46 parts
2 layers101.6 × 147.3 mm
Karabas pro revER
andykarpov/karabas-pro
FPGA based retrocomputer with FDD and HDD controllers
223 parts37MIT
2 layers79.5 × 59.5 mm
DCC LNET BASE
bask185/dccServoDecoder
dccServoDecoder
36 parts
2 layers70 × 60 mm
PwmController
bask185/pwmController

50 parts
2 layers90.2 × 48.3 mm
MOBO SMD
lkesteloot/alice
Website documenting a hardware project from the 1990s.
64 parts79Apache-2.0
2 layers100 × 67 mm
Bms
scttnlsn/bms
Battery management system for 4-series li-ion packs
52 parts67
2 layers160 × 100 mm
CodyComputer
fjmilens3/cody-computer
Design files and source code for the Cody Computer.
59 parts64GPL-3.0
4 layers100 × 49.8 mm
Expansion board
reubenstr/zuko
A quadruped robot dog!
75 parts51MIT