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4 layers53.5 × 52 mmPWM, the printed circuit board in 3D

Collection of materials, laboratory work, and projects developed during the bachelor's degree program.

Size
53.5 × 52 mm
Copper layers
4
Thickness
1.6 mm
Parts
36
Nets
31
Pads
93
Tracks, vias
143, 23
Pours
3
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
10 Sep 2026
Updated
10 Sep 2026

Overview

PWM is an open-source printed circuit board by francibat, from the francibat/academic-projects-electronics repository on GitHub. It is a 4-layer board of 53.5 × 52 mm with 36 parts on 31 nets, routed with 143 tracks and 23 vias.

It is built around the TL082CDT, LM311DRG and 1N4148W-7-F-CN, with the SS34 and RK09L12B0A1V among its other parts. Its parts include 12 resistors, 11 capacitors, 3 ICs, 2 diodes and 1 connector.

Main components

5

README

README.md

Projects and Exercises – Bachelor's Degree in Electronic Engineering

Collection of materials, laboratory work, and projects developed during the bachelor's degree program.

📚 Table of Contents:

  • Fondamenti di Informatica (Fundamentals of Computer Science): first year, Prof. Roberto Casadei, foundamentals of C Language.
  • Laboratorio di Informatica (Computer Lab): first year, prof. Matteo Francia, C.
  • Laboratorio di Ingegneria dell'Informazione (Information Engineering Laboratory): second year, Prof. Andrea Giorgetti, Prof. Sergio Callegari, Prof. Enrico Paolini, MATLAB, C, Simulink, Simcape, LTSpice, python.
  • Elettronica di Potenza (Power Electronic): third year, Prof. Andrea Natale Tallarico, design with LTSpice.
  • Elettronica dei Sistemi Digitali (Electronic of Digital Systems): third year, Prof. Aldo Romani, VHDL with Quartus and ModelSim, microcontrollers with C.
  • Internet of Things: third year, Prof. Anna Guerra, programs in MATLAB and C for IoT.
  • Laboratorio di Radiofrequenza e Antenne (Radio Frequency and Antenna Laboratory): third year, Prof. Enrico Maria Vitucci, Prof. Giacomo Paolini, antenna design using CST and radio-frequency circuit design using AWR.
  • Misure Elettroniche (Electronic Measurements): third year, Prof. Marco Crescentini, Test bench setup and programming of measurement instruments.
  • Progetto di Circuiti Elettronici (Electronic Circuit Design): third year, Prof. Marco Tartagni, circuit design with LTSpice and Kicad.

Disclaimer: The subjects listed above do not represent the full scope of the degree program. Listed below are the remaining subjects covered, which did not require computer-based exercises or projects:

  • Analisi Matematica A (Calculus A), Prof. Massimo Cicognani.
  • Analisi Matematica B (Calculus B), Prof. Giovanni Eugenio Comi.
  • Fisica Generale (General Physics), Prof. Alessandra Fanfani.
  • Fondamenti di Chimica (Fundamentals of Chemistry), Prof. Nadia Lotti.
  • Geometria e Algebra (Linear Algebra), Prof. Marco Moraschini.
  • Algoritmi di ottimizzazione (Operations Research), Prof. Daniele Vigo.
  • Elaborazione dei segnali (Signal Processing), Prof. Marco Chiani.
  • Elettrotecnica (Electrical Engineering), Prof. Artuto Popoli.
  • Calcolatori Elettronici (Computer Architectures), Prof. Luca Roffia.
  • Controlli Automatici (Automatic Controls), Prof. Paolo Castaldi.
  • Conversione Elettromeccanica dell'Energia (Electromechanical Energy Conversion), Prof. Alberto Bellini.
  • Elettronica (Electronics), Prof. Claudio Fiegna, Prof. Enrico Sangiorgi.
  • Campi Elettromagnetici (Electromagnetism), Prof. Vittorio Degli Esposti, Prof. Enrico Maria Vitucci.
  • Comunicazioni Digitali e Internet (Digital Communications and Internet), Prof. Davide Dardari, Prof. Walter Cerroni.

Parts

36
QtyValueFootprintReferences
6100nCapacitor_SMD:C_0805_2012MetricC9, C10, C11, C12, C13, C14
4MountingHoleMountingHole:MountingHole_3.2mm_M3H1, H2, H3, H4
310kResistor_SMD:R_0805_2012MetricR1, R5, R8
21.5kResistor_SMD:R_0805_2012MetricR10, R11
210uCapacitor_SMD:CP_Elec_10x10C7, C8
21N4148W-7-F1N4148W_7_F_fp:SOD123_DIOCR1, CR2
21kResistor_SMD:R_0805_2012MetricR3, R4
21nCapacitor_SMD:C_0805_2012MetricC4, C5
2SS34Diode_SMD:D_SMAD3, D4
118kResistor_SMD:R_0805_2012MetricR7
13.3kResistor_SMD:R_0805_2012MetricR2
14.7kResistor_SMD:R_0805_2012MetricR6
15.6kResistor_SMD:R_0805_2012MetricR9
1560pCapacitor_SMD:C_0805_2012MetricC1
1Conn_01x02Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalVout
1Conn_01x03Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_VerticalJ1
1LM311DRLM311DR_fp:D8U1
1LT1361CS8-PBFLT1361CS8_PBF_fp:SO-8_S_LITU2
1RK09L12B0A1VRK09L12B0A1V_fp:RK09L12B0A1V_AALR12
1TL082CDTTL082CDT:D8_STMU4

Questions

How big is the PWM PCB?

It measures 53.5 × 52 mm and has 4 copper layers, 1.6 mm thick.

What parts does the PWM use?

36 parts, built around the TL082CDT, LM311DRG, 1N4148W-7-F-CN and SS34. 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 PWM KiCad files?

From the francibat/academic-projects-electronics repository on GitHub, at the commit this page was made from: the board is Progetto_di_circtuiti_elettronici/Kicad/PWM/PWM/PWM.kicad_pcb and its schematic Progetto_di_circtuiti_elettronici/Kicad/PWM/PWM/PWM.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the PWM design in my own project?

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

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