Robot Brain Mission 4 - Give It A Face Pupil Notes

Mission 4: Give It A Face

Big Question

Can a robot show feelings using only a small grid of lights?

Your Mission

Use the LED matrix to draw a face for your robot brain. The face does not need many pixels. A few dots can still show happy, sleepy, surprised, or worried.

Parts

• Bluepill on breadboard
• LED matrix module
• Jumper wires

Build

Use the same display wiring from the lesson.

Before drawing, check that the matrix can show a simple test pattern.

Connect

1. Press **Connect** in ModuLab.
2. Open the matrix drawing panel.
3. Clear the display.

Try It

Draw a simple face:

• two eyes
• a mouth
• one extra detail, such as eyebrows

Send it to the matrix.

Success Check

• The matrix shows your drawing.
• Most of the face is easy to recognise.
• You can clear it and draw a different face.

Debug

If some LEDs do not match your drawing:

• Send the full image again.
• Clear the matrix and redraw.
• Check that you are using the correct matrix panel.
• Ask whether the lesson uses rows, columns, or a full frame command.

Remix

Make three robot expressions:

• ready
• confused
• victorious

Robot Brain Idea

Robots do not need realistic faces. Simple symbols can still help people understand what the robot is doing.