mBlockCoding

MBlock Coding for Sound Sensor Clap LED Project 👏💡

1. Variables

Create variable:

state

This stores the sound sensor reading.

2. Main Program

Start Block

When Arduino starts up

Add:

forever

3. Read Sound Sensor

Inside forever add:

set state to digital read pin D2

Explanation

Arduino continuously checks:
“Did the sensor detect clap sound?”

4. Add Condition

if state = LOW then

Explanation

When clap sound occurs:

• sensor output becomes LOW

5. LED ON

Inside IF block:

set digital pin 8 HIGH

Explanation

LED turns ON when clap detected.

6. Else Condition

else

Inside:

set digital pin 8 LOW

Explanation

Without sound:
LED remains OFF.

Final MBlock Logic

When Arduino starts up

forever

    set state to digital read pin D2

    if state = LOW then

        set digital pin 8 HIGH

    else

        set digital pin 8 LOW