Fun words, quiz and what's next
Fun words to know
| Word | Simple meaning |
|---|---|
| IoT | Things that sense, think, act and share over the internet |
| Sensor | A part that notices something, like light or heat |
| Actuator | A part that does something, like a motor or buzzer |
| Microcontroller | The tiny brain chip on a board |
| Circuit | A complete loop that electricity flows around |
| LED | A small light that glows when electricity flows the right way |
| Resistor | A part that slows electricity to protect other parts |
| Breadboard | A board with holes for building circuits without soldering |
| Program / code | Instructions that tell the brain what to do |
| Upload | Sending your program from the computer to the board |
| WiFi | Wireless internet in your home or school |
| Bluetooth | Short-distance wireless talk between devices |
| Cloud | Computers on the internet that store data |
| Relay | A switch the brain can flip to control bigger things |
| Servo | A motor that turns to an exact angle |
Quick quiz
- What are the four steps every smart device follows?
- Which sensor works like a bat?
- Why does an LED need a resistor?
- Which board has built-in WiFi: Arduino Uno or ESP32?
- Which part of an Arduino program runs again and again?
- Which wireless way would you use on a big farm with no WiFi?
- What should you do if your project smells like burning?
Answers
- Sense, think, act, share.
- The ultrasonic sensor.
- To stop too much current from burning it out.
- The ESP32.
loop().- LoRa.
- Unplug it at once and get help.
What to learn next
- Build all five projects from Chapter 10.
- Join a maker club, a robotics club or an online maker community.
- Try coding with MicroPython on a Raspberry Pi Pico.
- When you are ready for more, move up to the full Engorio IoT Encyclopedia, which goes from beginner all the way to advanced.
Keep asking "what if this thing could think?" That question is how every inventor starts.