6 · Full projects
Project: thermostat
Expert40 min
Goal
Regulate a target temperature with hysteresis and a display.
Why it matters
Your first complete closed loop: measure → decide → act → feedback.
Steps
- 01Temperature sensor as input, relay as output.
- 02Setpoint adjustable with the potentiometer.
- 03±1 °C hysteresis to avoid short cycles.
- 04Show setpoint, reading and heating state.
This tutorial runs inside the Circuitly simulator: your wiring and your code are checked automatically at every step.
Next tutorials
- 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: obstacle-avoiding robot
Move forward, detect an obstacle under 20 cm and go around it.
- Project: smartwatch
Show time, steps and temperature on the OLED, with button navigation.