Kids OK with adultESP32Level 2/3
Track 3 People with mmWave
A multi-target radar tracks up to 3 people at once and an OLED draws where each one is.
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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.
Check your OLED's pin order: some boards are GND, VCC, SCL, SDA.
Strictly follow the description given with this video.
Video
The video link will be added here soon.
How it works
- The radar reports the X and Y position of up to 3 people at 256000 baud.
- The ESP32 reads the data on D14 and counts the people.
- Each person is drawn as a dot on the OLED.
- It sees about 8 m and ±60° when mounted 1.5 m high, tilted slightly down.
Parts you need
Multi-target mmWave radar sensor (24 GHz, UART)× 1Buy
ESP32 development board (30-pin)₹518× 1Buy
Jumper wires, USB cable× 1Buy
Kit for this projectPrice on request
Get the kitWiring
PowerGroundSignal
| # | From | Connect to |
|---|---|---|
| 1 Power | Radar 5V | ESP32 VIN |
| 2 Ground | Radar GND | ESP32 GND |
| 3 Signal | Radar TX | ESP32 D14 (RX) |
| 4 Signal | Radar RX | ESP32 D27 (TX) |
| 5 Power | OLED VCC | ESP32 3V3 |
| 6 Ground | OLED GND | ESP32 GND |
| 7 Signal | OLED SCL | ESP32 D19 |
| 8 Signal | OLED SDA | ESP32 D21 |
