How to Use EWT104-BT53A3: Examples, Pinouts, and Specs

The EWT104-BT53A3, manufactured by Chengdu Ebyte Electronic Technology Co., is a versatile electronic component designed for signal processing and control functions. Its robust design and reliable performance make it suitable for integration into a wide range of electronic systems. The component is commonly used in industrial automation, IoT devices, and embedded systems where precise signal handling and control are required.

• Signal processing in industrial automation systems
• Control modules in IoT devices
• Embedded systems requiring reliable signal handling
• Communication and data transmission systems

The EWT104-BT53A3 features a compact pin layout for easy integration into circuits. Below is the pin configuration:

1. Power Supply: Connect the VCC pin to a stable power source within the range of 3.3V to 5.5V. Ensure the GND pin is connected to the circuit ground.
2. Serial Communication: Use the TXD and RXD pins to establish serial communication with a microcontroller or other devices. Ensure proper baud rate settings.
3. Enable Pin: Use the EN pin to activate the module. Pull the pin high to enable the component and low to disable it.
4. Status Monitoring: The STATE pin can be used to monitor the operational status of the module.

• Power Stability: Use a decoupling capacitor (e.g., 10µF) near the VCC pin to ensure stable power supply and reduce noise.
• Signal Integrity: Keep the TXD and RXD lines short to minimize signal degradation.
• Temperature Range: Ensure the module operates within the specified temperature range (-40°C to +85°C) to avoid performance issues.
• ESD Protection: Implement proper ESD protection measures to safeguard the module during handling and operation.

The EWT104-BT53A3 can be easily interfaced with an Arduino UNO for Bluetooth communication. Below is an example circuit and code:

#include <SoftwareSerial.h>

// Define RX and TX pins for SoftwareSerial
SoftwareSerial BTSerial(10, 11); // RX = Pin 10, TX = Pin 11

void setup() {
  // Initialize serial communication with the module
  Serial.begin(9600); // Communication with PC
  BTSerial.begin(9600); // Communication with EWT104-BT53A3

  Serial.println("EWT104-BT53A3 Bluetooth Module Initialized");
}

void loop() {
  // Check if data is available from the module
  if (BTSerial.available()) {
    char data = BTSerial.read(); // Read data from the module
    Serial.print("Received: ");
    Serial.println(data); // Print received data to Serial Monitor
  }

  // Check if data is available from the Serial Monitor
  if (Serial.available()) {
    char data = Serial.read(); // Read data from Serial Monitor
    BTSerial.write(data); // Send data to the module
    Serial.print("Sent: ");
    Serial.println(data); // Print sent data to Serial Monitor
  }
}

1. Module Not Powering On

   • Cause: Insufficient or unstable power supply.
   • Solution: Verify the VCC and GND connections. Use a decoupling capacitor to stabilize the power supply.

2. No Communication Between Module and Microcontroller

   • Cause: Incorrect TXD and RXD connections or mismatched baud rate.
   • Solution: Ensure TXD of the module is connected to RX of the microcontroller and vice versa. Verify the baud rate settings in the code.

3. Intermittent Communication Failures

   • Cause: Noise or interference in the signal lines.
   • Solution: Use shorter wires for TXD and RXD connections. Add pull-up or pull-down resistors if necessary.

4. Module Not Responding to Commands

   • Cause: EN pin not properly configured.
   • Solution: Ensure the EN pin is pulled high to activate the module.

Q1: Can the EWT104-BT53A3 operate at 3.3V?
Yes, the module supports an operating voltage range of 3.3V to 5.5V.

Q2: What is the maximum communication range of the module?
The communication range depends on environmental factors but typically extends up to 10 meters in open space.

Q3: Is the module compatible with Bluetooth 4.0 devices?
Yes, the EWT104-BT53A3 is backward compatible with Bluetooth 4.0 devices.

Q4: Can I use the module in outdoor environments?
Yes, the module operates within a wide temperature range (-40°C to +85°C), making it suitable for outdoor use. However, ensure proper enclosure to protect it from moisture and dust.