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Step 6 Click on LIGHTS option, select ‘Set LED’ block and set it to pin 8. From Light options, select
HIGH and attach it to Set LED 8 similarly for else condition.

Step 7 Connect the robot brain and Mobile/Desktop/Laptop with the cable to upload the code.

Step 8 Once the code is uploaded. Connect the robot brain with power bank and check the result.

Learning Outcomes

Students learnt about the interfacing and connecting light sensor on Tinker Orbits. Similarly, how
other output device can be controlled using Light.

Application

The uses of LDRs are:

Street Lighting: LDRs are used in automatic street
lights that turn on when it gets dark and turn off
when there is daylight, helping to conserve energy.
Solar Garden Lights: LDRs are used in solar-powered
garden lights that turn on at night and turn off during
the day to charge their batteries.

exercise

A. Tick ( ) the correct option.
1. What is the purpose of an OLED display?

i) To blink on and off ii) To show images and text

iii) To control motors iv) To measure soil moisture
2. What does a soil sensor measure?

i) The temperature of the air ii) The amount of light

iii) The moisture level in the soil iv) The brightness of an LED
3. What happens to an LDR’s resistance when it is exposed to more light?

i) It increases ii) It decreases

iii) It stays the same iv) It turns off

42 RoboGenius (V1.0)-VI