Design with SparkFun ESP8266 Thing - Dev Board in Cirkit DesignerThe SparkFun ESP8266 Thing - Dev Board is a comprehensive development platform for the ESP8266, which is a highly integrated Wi-Fi SoC (System on Chip) that offers a self-contained networking solution. It enables users to add robust and versatile Wi-Fi capabilities to their projects with minimal hassle. Common applications include Internet of Things (IoT) devices, home automation, sensor networks, and Wi-Fi enabled prototypes.
This circuit uses a SparkFun ESP8266 Thing Dev Board to control two DC motors via an L298N motor driver. The ESP8266 receives power from a 4 x AAA battery mount and sends control signals to the motor driver, which in turn drives the motors.
Open Project in Cirkit Designer
This circuit features an ESP32 Wroom Dev Kit as the main microcontroller, interfaced with an MPL3115A2 sensor for pressure and temperature readings, and a Neo 6M GPS module for location tracking. The ESP32 is also connected to an SD card reader for data logging purposes. A voltage regulator is used to step down the USB power supply to 3.3V, which powers the ESP32, the sensor, and the SD card reader.
Open Project in Cirkit Designer
This circuit features an ESP8266 ESP-01 WiFi module interfaced with an Adafruit FTDI Friend for serial communication. The ESP8266's TXD and RXD pins are connected to the FTDI's RX and TX pins respectively, allowing for data exchange between the microcontroller and a computer. Additionally, a pushbutton is connected to the ESP8266's reset pin, enabling manual resets of the module.
Open Project in Cirkit Designer
This circuit features an ESP32 Devkit V1 microcontroller connected to various sensors and modules for monitoring and communication purposes. It includes an MQ-2 gas sensor and a DHT11 temperature and humidity sensor, both interfaced with the ESP32 for environmental data collection. The circuit is powered by a 12V battery, regulated to 5V by step-down converters, and includes a solar charge controller connected to a solar panel for battery charging, a UPS module for power management, and a SIM900A module for GSM communication. Additionally, there is a WS2812 RGB LED strip for visual feedback and a piezo buzzer for audio alerts, both controlled by the ESP32.
Open Project in Cirkit Designer| Pin Number | Function | Description |
|---|---|---|
| 1 | TX | UART transmit (connects to RX of USB-to-serial adapter) |
| 2 | RX | UART receive (connects to TX of USB-to-serial adapter) |
| 3 | RST | Reset (active low) |
| 4 | CH_PD | Chip Power-Down (active high) |
| 5 | GPIO0 | General-purpose I/O and bootstrapping pin |
| 6 | GPIO2 | General-purpose I/O |
| 7 | GPIO4 | General-purpose I/O |
| 8 | GPIO5 | General-purpose I/O |
| 9 | GPIO12 | General-purpose I/O |
| 10 | GPIO13 | General-purpose I/O |
| 11 | GPIO14 | General-purpose I/O |
| 12 | GPIO15 | General-purpose I/O |
| 13 | GPIO16 | General-purpose I/O, deep sleep wake-up |
| 14 | A0 | Analog input |
| 15 | SDA | I2C data line |
| 16 | SCL | I2C clock line |
| 17 | VCC | 3.3V power supply input |
| 18 | GND | Ground |
Powering the Board:
Programming the Board:
Connecting to Wi-Fi:
WiFi.begin(ssid, password) function to connect to a network.Interfacing with Sensors and Actuators:
Board not connecting to Wi-Fi:
Board not recognized by the computer:
Unable to program the board:
#include <ESP8266WiFi.h>
const char* ssid = "yourSSID";
const char* password = "yourPASSWORD";
void setup() {
Serial.begin(115200);
// Connect to Wi-Fi
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
}
void loop() {
// Your code here
}
Remember to replace yourSSID and yourPASSWORD with your actual Wi-Fi network's SSID and password. This code initializes the Wi-Fi connection and, once connected, prints the local IP address to the serial monitor.