All 30 days are ready to sail. Pick your day and cast off.
First light
Set up the board and score your first wins.
Light and motion
Drive many outputs and shape how they glow.
Talking over serial
Open a two-way channel to the board.
Reading the world
Turn sensors into numbers you can use.
Day 13
Read a knob as a number
Day 14
Touch sensor: use your body as input
Day 15
Soft light: map input to brightness
Day 16
Soft colourful light: map input to colour
Day 17
Night lamp: respond to ambient light
Day 18
Thermometer: sense temperature
Day 19
Joystick: read two axes and a button
Day 20
Shift register: many outputs, fewer pins
Day 21
Seven-segment display: show one clear digit
Making things move
Add motors, servos, and a real display.
Sensing distance
Measure the world by timing sound.
Onto the network
Go wireless and reach the internet.