Simple project with Arduino to measure distance with ultrasonic sensor, save it in a memory card or send it via serial port.
Also, it has a buzzer that sounds when distance is less than 10 cm. For debug mode, it adds and i2c LCD display, that shows current distance on it.
| Component | Connection |
|---|---|
| HC-SR04 Trig | D5 |
| HC-Sr04 Echo | D4 |
| i2c SDA | A4 |
| i2c SCL | A5 |
| USART RX | D6 |
| USART TX | D7 |
| BUZZER | D8 |
| SWITCH 1 | D2 |
| SWITCH 2 | D3 |
| SD Card MISO | D12 |
| SD Card MOSI | D11 |
| SD Card CS | D10 |
| SD Card SCK | D9 |