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Look at this little character (if you are within six feet) and his red light “topper” will come on. Continue to stare for three seconds and the eyeball will spin around to face you. Continue to stare for three more seconds and the controlled lights will change state (on if currently off—off if currently on). For the next five seconds, you will be ignored. Repeat if desired.
The “Person Sensor” (tiny camera and microcontroller—less than ten dollars) lets an Arduino know that someone is out there (and where they are within the field of view).


- Person Sensor
- Qwiic cable for person sensor
- Arduino Uno
- USB power supply
- Servo motor
- (2) 5 volt relays
- Wireless remote control
- 3d printed parts
- Breadboard
- Wire wrap wire
- 3mm screws and nuts
- Red led
- 220 ohm resistor
- Google eye
- Poster putty
- Solder
- Wire (misc.)
- Heat shrink tubing”

Link to article