Kids OK with adultESP32Level 2/3
Auto Pet Door
The servo arm itself is the latch: it drops to free the flap when your pet comes near, then locks it again.
Kids OK, with an adult
DIY project. Children must build this only with an adult (16+ years) beside them at all times. Not suitable for children under 8 years.
Strictly follow the description given with this video.
Video
The video link will be added here soon.
How it works
- The mmWave radar senses your pet near the door.
- The servo arm turns from 0° (up, flap blocked) to 90° (down, flap free).
- The pet pushes through the flap.
- After a few seconds with no one near, the arm goes back up and locks it.
Parts you need
- mmWave radar sensor (24 GHz presence)× 1Buy
- ESP32 development board (30-pin)× 1Buy
- Micro servo (180°)× 1Buy
- 5V 2A adapter× 1Buy
Kit for this projectPrice on request
Get the kitWiring
PowerGroundSignal
| # | From | Connect to |
|---|---|---|
| 1 Power | Radar V | ESP32 3V3 |
| 2 Ground | Radar G | ESP32 GND |
| 3 Signal | Radar IO | ESP32 D23 |
| 4 Signal | Servo signal | ESP32 D26 |
| 5 Power | Servo red | ESP32 VIN |
| 6 Ground | Servo brown | ESP32 GND |
| 7 Power | 5V 2A adapter | ESP32 VIN / GND |
3D print files
This project has no 3D-printed parts.
Code
The tested Arduino / ESP32 code for this project will be posted here, ready to copy.