Worksheets13. QR Code Activated LED - RoboticSchools
Total questions: 10
Worksheet time: 10mins
What is a QRcode (Quick Response)?
A secret music code 🎶
A pattern of black and white squares that has information 📊
A colorful light used in LEDs 🌈
A way to count and keep track of products 📦
When the app detects the QRcode for "red," what color will the background switch to? 🎨🔴
Yellow 🟡
Green 🟢
Red 🔴
Blue 🔵
What is the main difference between Bluetooth and Wi-Fi? 📶🔗
Bluetooth is for short distances, and Wi-Fi is for long distances. 🌍
Bluetooth is faster than Wi-Fi. ⚡
Wi-Fi uses less battery than Bluetooth. 🔋
Bluetooth can connect to many devices at once. 🗃️
Which set of blocks is used to scan a QRcode? 📦🔍
Game On! 🎮 Scan the QR Code! 📱 Find the code that displays "RoboticSchools"!
How would you turn off the LED when an invalid barcode is scanned? 💡❌
What are the correct baud rates to fill in the blanks for the following code?
9600
255
1023
0
Which mobile component is MOST important for scanning QR codes? 📱📷🔍
Clock ⏰
Camera 📸
Label 🏷️
Bluetooth 📡
What happens when the user clicks the SCAN button in this app? 📱📦🔍
To connect the app to Bluetooth 📡
To start scanning a QR code or barcode 📷
To stop the camera after scanning ❌📸
To turn ON the LED directly 💡
Which App Inventor blocks correctly send Bluetooth commands after scanning QR codes? 📦📱📡
