Raspberry Pi Compute Module 3 LT (Lite)

Raspberry Pi Compute Module 3 LT (Lite) Documentation

Overview

The Raspberry Pi Compute Module 3 LT (Lite) is a compact, cost-effective system-on-module (SoM) designed for industrial and commercial IoT applications. It is a variation of the Raspberry Pi Compute Module 3, without the on-board eMMC flash storage. This module provides a powerful quad-core Cortex-A53 CPU, 1GB RAM, and a range of interfaces for connecting peripherals and sensors.

Key Features

Broadcom BCM2837B0 quad-core Cortex-A53 CPU
 1GB LPDDR2 RAM
 Dual-band 802.11ac wireless LAN
 Bluetooth 4.2
 GPIO, I2C, I2S, SPI, UART, and USB interfaces
 Camera interface (CSI-2)
 Display interface (DSI)

Code Examples

### Example 1: Basic GPIO Control using Python

This example demonstrates how to use the Raspberry Pi Compute Module 3 LT to control an LED connected to GPIO pin 17.

Components:

Raspberry Pi Compute Module 3 LT
 Breadboard
 LED
 220 resistor
 Jumper wires

Code:
```python
import RPi.GPIO as GPIO
import time

# Set up GPIO mode
GPIO.setmode(GPIO.BCM)

# Set up GPIO pin 17 as output
GPIO.setup(17, GPIO.OUT)

try:
    while True:
        # Turn on the LED
        GPIO.output(17, GPIO.HIGH)
        time.sleep(1)
        # Turn off the LED
        GPIO.output(17, GPIO.LOW)
        time.sleep(1)
except KeyboardInterrupt:
    # Clean up GPIO on exit
    GPIO.cleanup()
```
### Example 2: Reading Sensor Data using Python and I2C

This example demonstrates how to use the Raspberry Pi Compute Module 3 LT to read data from a BME280 temperature and humidity sensor connected via I2C.

Components:

Raspberry Pi Compute Module 3 LT
 BME280 temperature and humidity sensor
 Breadboard
 Jumper wires

Code:
```python
import smbus2
import bme280

# Set up I2C bus
bus = smbus2.SMBus(1)

# Set up BME280 sensor
bme280_sensor = bme280.BME280(i2c_dev=bus)

try:
    while True:
        # Read temperature, humidity, and pressure data
        data = bme280_sensor.read_compensated_data()
        print("Temperature: {:.2f}C, Humidity: {:.2f}%, Pressure: {:.2f}hPa".format(data[0], data[1], data[2]))
        time.sleep(1)
except KeyboardInterrupt:
    # Clean up on exit
    pass
```
Note: These examples assume that the Raspberry Pi Compute Module 3 LT is running a compatible operating system, such as Raspbian, and that the necessary libraries and dependencies are installed.