Kids OK with adultESP32Level 2/3
Intruder Alarm with Phone Alert
Arm it from your phone. If the radar senses someone, the buzzer sounds and an INTRUDER ALERT pops up on your phone.
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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
- Send /arm to the chat bot to switch the alarm on, /disarm to switch it off.
- When armed, the mmWave radar watches the room.
- Someone present: the buzzer on D26 sounds.
- The ESP32 sends a notification over Wi-Fi to your phone.
Parts you need
mmWave radar sensor (24 GHz presence)× 1Buy
ESP32 development board (30-pin)₹518× 1Buy
3.3V active buzzer₹17× 1Buy
USB 5V 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 | Buzzer + | ESP32 D26 |
| 5 Ground | Buzzer − | ESP32 GND |
3D print files
This project has no 3D-printed parts.