How to Use ENV-32X Flash Memory Data Logger: Examples, Pinouts, and Specs

The ENV-32X Flash Memory Data Logger by Atlas Scientific is a compact and versatile device designed for environmental monitoring applications. With 32MB of onboard flash memory, it can store extensive data from various sensors, including temperature, humidity, and other environmental parameters. Its robust design and efficient data logging capabilities make it ideal for long-term monitoring in both indoor and outdoor environments.

• Environmental research and monitoring
• Agricultural and greenhouse monitoring
• Industrial process control
• Weather stations
• IoT-based data collection systems
• Scientific experiments requiring long-term data logging

The ENV-32X is engineered for reliability and ease of use. Below are its key technical details:

The ENV-32X features a simple pinout for easy integration into circuits:

The ENV-32X is designed for straightforward integration into sensor-based systems. Follow the steps below to use the component effectively:

1. Power Supply: Connect the VCC pin to a 3.3V or 5V power source and the GND pin to ground.
2. UART Communication: Connect the TX pin of the ENV-32X to the RX pin of your microcontroller (e.g., Arduino UNO) and the RX pin of the ENV-32X to the TX pin of the microcontroller.
3. Enable Logging: Use a GPIO pin from your microcontroller to control the LOG_EN pin. Set it HIGH to enable data logging.
4. Reset: Optionally, connect the RESET pin to a GPIO pin for manual or software-controlled resets.

• The ENV-32X supports UART commands for configuration. Use a serial terminal or microcontroller to send commands.
• Example commands include setting the logging interval, clearing memory, and retrieving logged data.

Below is an example of how to interface the ENV-32X with an Arduino UNO:

#include <SoftwareSerial.h>

// Define pins for SoftwareSerial communication
SoftwareSerial env32xSerial(10, 11); // RX, TX

// Define the LOG_EN pin
const int logEnablePin = 7;

void setup() {
  // Initialize serial communication
  Serial.begin(9600); // For debugging
  env32xSerial.begin(9600); // For ENV-32X communication

  // Configure the LOG_EN pin
  pinMode(logEnablePin, OUTPUT);
  digitalWrite(logEnablePin, LOW); // Disable logging initially

  Serial.println("ENV-32X Data Logger Initialized");
}

void loop() {
  // Enable data logging
  digitalWrite(logEnablePin, HIGH);
  delay(1000); // Wait for 1 second

  // Send a command to the ENV-32X (e.g., retrieve data)
  env32xSerial.println("READ DATA");

  // Read and display the response
  while (env32xSerial.available()) {
    char c = env32xSerial.read();
    Serial.print(c); // Print data to the Serial Monitor
  }

  // Disable data logging
  digitalWrite(logEnablePin, LOW);
  delay(5000); // Wait for 5 seconds before the next cycle
}

• Ensure the power supply voltage is within the specified range (3.3V to 5.5V).
• Use proper UART communication settings (9600 baud rate by default).
• Avoid frequent resets to prevent data corruption.
• Store the ENV-32X in a dry environment when not in use to protect it from moisture.

1. No Data Logging

   • Cause: The LOG_EN pin is not set HIGH.
   • Solution: Ensure the LOG_EN pin is connected to a GPIO pin and set HIGH during operation.

2. No Communication with Microcontroller

   • Cause: Incorrect UART connections or baud rate mismatch.
   • Solution: Verify the TX and RX connections and ensure the baud rate is set to 9600.

3. Corrupted Data

   • Cause: Power interruptions during data logging.
   • Solution: Use a stable power supply and avoid sudden resets.

4. Memory Full

   • Cause: The 32MB flash memory is full.
   • Solution: Clear the memory using the appropriate UART command before starting a new logging session.

Q1: Can the ENV-32X log data from multiple sensors simultaneously?
A1: Yes, the ENV-32X can log data from multiple sensors as long as the data is transmitted via UART.

Q2: How long can the ENV-32X store data?
A2: The storage duration depends on the logging interval and the amount of data being logged. With 32MB of memory, it can store millions of data points.

Q3: Is the ENV-32X waterproof?
A3: No, the ENV-32X is not waterproof. Use a protective enclosure for outdoor applications.

Q4: Can I change the default baud rate?
A4: Yes, the baud rate can be configured using UART commands. Refer to the manufacturer's command set for details.

Q5: What happens if power is lost during logging?
A5: Data already written to the flash memory will remain intact, but unsaved data may be lost. Use a backup power source for critical applications.