Week 06

Electronics design

Learning outcomes

  • Select and use software for circuit board design
  • Demonstrate workflows used in circuit board design
Week 3 cover

Assignment requirements

Group assignment

  • Use the test equipment in your lab to observe the operation of a microcontroller circuit board (as a minimum, you should demonstrate the use of a logic analyzer)
  • Document your work on the group work page and reflect what you learned on your individual page

Individual assignment

  • Use an EDA tool to design a development board that uses parts from the inventory to interact and communicate with an embedded microcontroller

Progress status

Group work Done

Test equipment

Individual work Done

Use EDA tool

Documentation Done

Upload .zip with source files.

1) Introduction

My main goal: survive

Step right image

2) Equipments and materials

Step left image

Digital multimeter PR-75


Type: Portable digital multimeter. The PR-75 is a general-purpose handheld digital multimeter designed for basic electrical measurement tasks in electronics and electrical work

Main features:

DC / AC Voltage Measurement up to 600V, Resistance Measurement (Ω), Continuity Test with Buzzer, Diode Test, Current Measurement (mA and 10A), Digital LCD Display, Manual Range Selector

Practical use:

Verify power supply (3.3V and 5V), check continuity between traces, and rule out short circuits before taking measurements with an oscilloscope

Step left image

Digital oscilloscope (GW Instek GDS-1152A)


Type: Two-channel digital oscilloscope (150 MHz, 2-channel model) for electronics labs. It captures and stores waveform data, letting you view, measure, and analyze electronic signals visually

Main features:

2 channels (CH1 and CH2), autoset function (for quick signal adjustment), VOLTS/DIV and TIME/DIV controls, trigger system (for signal stabilization), waveforms and measuring values ​​such as voltage and frequency

Practical use:

Verify signals over time (for example, a square wave or a PWM signal), test: microcontroller's output pin, digital signal (square wave), microcontroller code and pins

Step left image

Materials


  • Xiao ESP 32 C32 Seeed Studio Mini development board WiFi BLE
  • Board
  • Wires
  • Leds
  • Buttons
  • Resistors
  • 4) Group assignment results

    For more details visit Fab Lab Peru - Group Assignment: https://fabacademy.org/2026/labs/lima/#page-top


    Review references

    Multimeter, oscilloscope, Xiao ESP 32 C32 and others

    Step right image

    Multimeter

    Multimeter with Xiao ESP 32 C32 Seeed Studio Mini, leds, board, usb C charger

    Step right image

    Multimeter

    Group tests and results

    Step right image

    Oscilloscope

    Results display

    Step right image

    Oscilloscope

    Review waves

    Step right image

    Oscilloscope

    Group results and signals display

    Step right image

    Group at Fab Lab UNI

    Group discussion and wrap up

    Step right image

    5) Individual assignment

    Installing KiCad main program and FabLib

    Installing KiCad

    Main program and FabLib

    KiCad version compatibility issues

    Installing KiCad

    Problems with versions

    Version 8.0 doesn't work with FabLib

    Version 10.0 does not include an update option

    Layout editor with components

    Layout editor

    XIAO ESP32-C3

    Resistors

    LEDs

    Components

    KiCad interface main windows

    KiCad interface

    Initial windows

    Main commands

    KiCad XIAO ESP32-C3

    KiCad

    XIAO ESP32-C3

    Resistor FabLab Library R1206

    KiCad

    Resistor - FabLab library R1206

    LED 1206

    KiCad

    LED 1206

    Connecting components in KiCad

    KiCad

    Connecting components

    PCB main window

    PCB

    Main window

    Components placement on PCB

    PCB

    Components placement

    Adding ground in layout

    Layout

    Adding ground

    Routing PCB connections

    PCB

    Routing connections

    Cutting the PCB board

    PCB

    Cutting the board

    PCB cutting process

    PCB

    Cutting process

    Final PCB layout

    Final PCB Layout

    Board, wires, LEDs, buttons, resistors

    PCB zoom view

    PCB

    Zoom view

    PCB zoom detail

    PCB

    Zoom view

    6) Final project progress

    Reviewing Xiao ESP32-C3 uses

    Reviewing uses of Xiao Seeed ESP32-C3

    Finding the light

    Finding components

    Finding components

    Mainboard: Xiao Seeed ESP32-C3

    Sense HAT

    Camera

    Finding suppliers

    Finding suppliers

    Xiao ESP32-C3 board

    Board

    Wires

    LEDs

    Buttons

    Resistors

    KiCad learning process

    KiCad

    After studying KiCad materials

    Xiao ESP32-C3

    KiCad components

    KiCad

    Xiao ESP32-C3 board

    Camera

    KiCad modelling

    KiCad

    Xiao ESP32-C3 board

    Modelling

    Materials used

    Materials

    Xiao ESP32-C3 board

    Board

    Wires

    LEDs

    Buttons

    Resistors

    7) Final results

    • Linked to the group assignment page
    • Documented what you learned in electronic design
    • Checked you board be fabricated
    • Explain problems and how you fixed them
    • Included original files (Eagle, KiCad,...)
    • Included a shot hero

    8) References files

    Sections