6 · Full projects
Project: obstacle-avoiding robot
Expert45 min
Goal
Move forward, detect an obstacle under 20 cm and go around it.
Why it matters
Perception → decision → action loop, exactly like a real robot.
Steps
- 01Two DC motors + ultrasonic sensor on a panning servo.
- 02Measure distance continuously.
- 03Below 20 cm: back up, turn, then continue.
- 04Structure everything as a state machine.
This tutorial runs inside the Circuitly simulator: your wiring and your code are checked automatically at every step.
Next tutorials
- Project: thermostat
Regulate a target temperature with hysteresis and a display.
- Project: intrusion alarm
Detect movement, fire the siren and arm/disarm with a button.
- Project: data logger
Sample a sensor at a steady rate, timestamp it and store it.
- Project: smartwatch
Show time, steps and temperature on the OLED, with button navigation.