Course chapters
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🎯 What you’ll learn
- What a wireless signal is
- Sender, receiver and antenna
- Wireless devices around you
🎬 Animated demo
A message leaves one antenna and ripples across to another.
🛠️ Project & application ideas
- Wireless device survey at home
- Tin-can phone vs radio comparison
🎯 What you’ll learn
- What frequency means
- Long waves vs short waves
- The electromagnetic spectrum
🎬 Animated demo
Drag the frequency slider and watch the wave squeeze together.
🛠️ Project & application ideas
- Rope wave experiment
- Spectrum poster
🎯 What you’ll learn
- AM and FM radio
- How music rides on a wave
- Range and obstacles
🎬 Animated demo
See a song hop onto a radio wave and fly to a receiver.
🛠️ Project & application ideas
- Build an FM station list
- Signal strength walk test
🎯 What you’ll learn
- Invisible infrared light
- Coded button signals
- Why remotes need line of sight
🎬 Animated demo
Press a remote button and see its hidden flashing code.
🛠️ Project & application ideas
- See IR through a phone camera
- IR-controlled LED
🎯 What you’ll learn
- Short-range pairing
- Sending data between devices
- Bluetooth in earbuds and apps
🎬 Animated demo
Pair a phone and board, then send a letter to switch a light.
🛠️ Project & application ideas
- Phone-controlled lamp
- Bluetooth message board
🎯 What you’ll learn
- How routers share internet
- Networks, passwords and IP addresses
- WiFi range and speed
🎬 Animated demo
Watch data packets hop from phone to router to the internet.
🛠️ Project & application ideas
- WiFi signal map of your home
- Board that joins your WiFi
🎯 What you’ll learn
- Cell towers and SIM cards
- How each G got faster
- Calls vs data
🎬 Animated demo
Follow a call from your phone to the tower and back out.
🛠️ Project & application ideas
- Speed test comparison
- Tower coverage drawing
🎯 What you’ll learn
- Tags without batteries
- Card readers and FASTag
- Tap-to-pay with NFC
🎬 Animated demo
Bring a card near the reader and watch the door unlock.
🛠️ Project & application ideas
- RFID attendance system
- NFC tag that opens a link
🎯 What you’ll learn
- Satellites that send time signals
- Finding your position
- India’s NavIC system
🎬 Animated demo
See signals from several satellites pin-point your location.
🛠️ Project & application ideas
- Map your walk with GPS
- Treasure hunt with coordinates
🎯 What you’ll learn
- Sending small data over kilometres
- Low power for long battery life
- Uses in farms and cities
🎬 Animated demo
A tiny sensor sends a reading across fields to a far gateway.
🛠️ Project & application ideas
- Long-range farm sensor plan
- Range test with two boards
🎯 What you’ll learn
- Strong WiFi passwords
- Why data is encrypted
- Public WiFi dangers
🎬 Animated demo
Watch a message scramble into secret code and unscramble.
🛠️ Project & application ideas
- Secure your home WiFi checklist
- Caesar cipher messages
🎯 What you’ll learn
- Choosing the right wireless link
- Sending commands reliably
- Testing range and delay
🎬 Animated demo
Drive a robot with a wireless remote and watch the commands fly.
🛠️ Project & application ideas
- Wireless robot remote
- Wireless doorbell (final project)