My Skill Lab
RoboticsBeginner

Arduino & Electronics Basics

Blink your first LED and build from there.

Taught by Sristi Maharjan · Robotics Engineer

What you'll learn

  • Explain voltage, current, and resistance and apply Ohm's law to size a real resistor
  • Read a solderless breadboard's power rails and terminal strips and build circuits without shorts
  • Wire an LED with a correct current-limiting resistor and a push button with a pull-down resistor
  • Write Arduino sketches using setup() and loop() to control digital outputs and read digital inputs
  • Use analogRead, analogWrite (PWM), and the Serial Monitor to read a sensor and dim an LED
  • Follow safe-wiring habits that protect your board, your components, and yourself

About this course

Start from a bare breadboard and a fistful of components, and finish able to wire and program real circuits with confidence. You will learn the physics that actually matters (voltage, current, resistance, and Ohm's law), how to read a breadboard, how to drive LEDs and read buttons and sensors safely, and how the Arduino's setup/loop model turns code into electrical signals. Every lesson is hands-on, beginner-friendly, and grounded in habits that keep both you and your parts unharmed.

Course content

9 lessons
  1. 1Voltage, Current & ResistanceThe three quantities behind every circuit, explained with a water analogy and real numbers.Preview
  2. 2Ohm's Law in PracticeV = I x R, rearranged three ways, used to choose a real LED resistor.Preview
  3. 3The Solderless BreadboardHow the holes connect, where the power rails are, and how to build without shorts.
  4. 4Meet the Arduino BoardWhat the pins do, how power gets in, and how setup() and loop() run your code.
  5. 5Blink an LED with a ResistorWire an external LED safely on the breadboard and control it with digitalWrite.
  6. 6Reading a Button (Digital Input)Wire a push button with a pull-down resistor and read it with digitalRead.
  7. 7Analog Output: Dimming with PWMUse analogWrite and PWM to fade an LED instead of just switching it on and off.
  8. 8Reading a Sensor (Analog Input)Use analogRead and the Serial Monitor to read a potentiometer or light sensor.
  9. 9Safe Wiring & Good HabitsProtect your board and parts: power-off wiring, polarity, shorts, and current limits.