Terminal Block Board for FireBeetle 2 ESP32 Wiki - DFRobot

Introduction

This expansion shield for FireBeetle 2 is just right for makers who love using terminal block for wiring up their projects!
Compared with the previous FireBeetle shields, it comes with additional 7-24V external voltage input and GDI port, and adopts terminal blocks to secure wires so as to make connections more stable and reliable. Each terminal block (except GND) has an LED for status indication. Since these LEDs also consume power, which leads to higher power consumption, an LED switch is designed on the board to allow users to turn off the LED when not required.

This expansion board is not compatible with FireBeetle ESP32-S3 and FireBeetle M0

Features

• Terminal block, more stable and reliable connections
• All pins of mainboard broken out
• External Voltage Input: 7-24V
• GDI for connecting display
• Clear colorful silkscreen
• Terminal block status indicator
• Terminal block status indicator switch

Specification

• External Voltage Input: 7-24V
• Screen Port: GDI
• 5V Port x3
• 3.3V Port x3
• GND Port x6
• Digital Port x12
• Analog Port x5
• I2C x3
• SPI x1
• Port Indicator x34
• Port Indicator Color: blue, red
• Default ON Port Indicator: 5V, 3.3V, D0, D1, D5, D6, A4, RST
• Dimension: 61×93.5mm/2.40×3.68"

Board Information

Dimension

Overview

• GDI Wiring Sequence

Tutorial

1 Digital Port

• Blink Example Code

This example use Blink code to show the level change of the port.

int LED=D0;
void setup() {
  pinMode(LED, OUTPUT);
}

void loop() {
  digitalWrite(LED, HIGH);   
  delay(1000);                       
  digitalWrite(LED, LOW);    
  delay(1000);                      
}

• Result

Download codes into FireBeetle 2, then the LED for D0 will blink.

2 Analog Port

• Requirements

  • Analog Rotation Potentiometer Sensor x 1
  • FireBeetle 2 Terminal Block x 1
  • FireBeetle 2 x 1

• Connection Diagram

Description:

FireBeete 2 Terminal Shield: 3.3V to Analog Rotation Potentiometer Sensor: P3

FireBeete 2 Terminal Shield: GND to Analog Rotation Potentiometer Sensor: P2

FireBeete 2 Terminal Shield: A0 to Analog Rotation Potentiometer Sensor: P1

• Sample Code

Function: Get the analog sensor readings via A0.

void setup() {
  Serial.begin(9600);
}

void loop() {
  int sensorValue = analogRead(A0);
  Serial.println(sensorValue);
  delay(20);        
}

• Result

Serial print the values read from A0.

3. I2C Port

• Requirements

  • SHT40 Temperature & Humidity Sensor x 1
  • FireBeetle 2 Terminal Block x 1
  • FireBeetle 2 x 1

• Connection Diagram

Description:

FireBeete 2 Terminal Shield: VCC to SHT40 VCC

FireBeete 2 Terminal Shield: GND to SHT40 GND

FireBeete 2 Terminal Shield: SCL to SHT40 SCL

FireBeete 2 Terminal Shield: SDA to SHT40 SDA

• Sample Code

Function: Get the ambient temperature and humidity using SHT40 to domenstrate I2C function.

#include"DFRobot_SHT40.h"

DFRobot_SHT40 SHT40(SHT40_AD1B_IIC_ADDR); 


uint32_t id = 0;
float temperature, humidity;

void setup() {

  Serial.begin(9600);
  SHT40.begin();

  while((id = SHT40.getDeviceID()) == 0){
    Serial.println("ID retrieval error, please check whether the device is connected correctly!!!");
    delay(1000);
  }

  delay(1000);
  Serial.print("id :0x"); Serial.println(id, HEX);

}

void loop() {
  temperature = SHT40.getTemperature(/*mode = */PRECISION_HIGH);
  humidity = SHT40.getHumidity(/*mode = */PRECISION_HIGH);

  if(temperature == MODE_ERR){
    Serial.println("Incorrect mode configuration to get temperature");
  } else{
    Serial.print("Temperature :"); Serial.print(temperature); Serial.println(" C");
  }
  if(humidity == MODE_ERR){
    Serial.println("The mode for getting humidity was misconfigured");
  } else{
    Serial.print("Humidity :"); Serial.print(humidity); Serial.println(" %RH");
  }
  if(humidity > 80){

    SHT40.enHeater(/*mode = */POWER_CONSUMPTION_H_HEATER_1S);
  }
  delay(1000);

  Serial.println("----------------------------------------");
}

• Result

Print the sensor data on the serial monitor.

4. GDI

• Requirements

  • 1.8inch 128x160 IPS TFT LCD Display x 1
  • FireBeetle 2 Terminal Block x 1
  • FireBeetle 2 x 1

• Connection

• Sample Code

Function: display "你好" on the screen with GDI to domenstrate GDI function.

#include "DFRobot_GDL.h"

DFRobot_ST7735_128x160_HW_SPI screen(/*dc=*/TFT_DC,/*cs=*/TFT_CS,/*rst=*/TFT_RST);


void setup() {
  Serial.begin(115200);
  screen.begin();
}

void loop() {
  screen.setTextSize(4);
  screen.fillScreen(COLOR_RGB565_BLACK);
  screen.setFont(&SIMKAIFont12pt);
  screen.setCursor(/*x=*/10,/*y=*/120);
  screen.setTextColor(COLOR_RGB565_BLUE); 
  screen.setTextWrap(true);
  screen.print("你好");
  delay(2000);
}

• Result

The screen shows the words "你好" in blue.

FAQ

For any questions, advice or cool ideas to share, please visit the DFRobot Forum.

More Documents

• DFR0923-CAD.rar
• DFR0923-3D-Model
• DFR0923-Dimension.pdf
• DFR0923-Schematics.PDF
• DFR0923.SchDoc