ESP12E ESP8266 Wireless Transceiver Module
ESP12E ESP8266 Wireless Transceiver Module
The ESP12E ESP8266 Wireless Transceiver Module is a compact, low-cost, and highly integrated Wi-Fi system-on-a-chip (SoC) module designed for IoT applications. It is based on the ESP8266 microcontroller, which is a popular and widely-used platform for wireless connectivity.
The ESP12E module provides Wi-Fi connectivity, allowing devices to connect to the internet or communicate with other devices wirelessly. It can operate as a station (STA) or an access point (AP), and supports both infrastructure and ad-hoc network modes. The module also features a built-in microcontroller, which can be programmed to perform a wide range of tasks, from simple IoT applications to complex automation systems.
### Hardware Features
ESP8266EX, a 32-bit RISC processor with a clock speed of up to 160 MHz
| Wi-Fi | IEEE 802.11 b/g/n protocol support, with a maximum data rate of 150 Mbps |
4MB of flash memory for storing firmware and data
2x GPIO, 1x SPI, 1x I2C, 1x UART, and 1x I2S
Operating voltage range of 2.2V to 3.6V, with a low-power consumption mode
24mm x 16mm x 3mm
### Wireless Features
| Wi-Fi Modes | Station (STA), Access Point (AP), and Wi-Fi Direct (P2P) |
| Wi-Fi Frequency | 2.4 GHz, with support for 20/40 MHz channel bandwidth |
WPA/WPA2 encryption, WEP encryption, and TKIP/AES encryption
Up to 400 meters (1312 feet) in open space, depending on the environment and antenna used
### Development Features
Supports programming via the Arduino IDE, Lua, and C/C++
Official SDK available for developing custom applications
Numerous example projects and code snippets available for various applications
Large and active community of developers and makers, with extensive documentation and support resources
### Certifications and Compliance
Compliant with FCC Part 15C and ICES-003
Compliant with EU Directive 2014/53/EU
Meets the requirements of the EU's Restriction of Hazardous Substances (RoHS) directive
Overall, the ESP12E ESP8266 Wireless Transceiver Module is a versatile and powerful component suitable for a wide range of IoT applications, from simple wireless sensors to complex automation systems. Its low cost, small form factor, and ease of use make it an ideal choice for prototyping and production.
ESP12E ESP8266 Wireless Transceiver Module DocumentationOverviewThe ESP12E ESP8266 Wireless Transceiver Module is a low-cost, low-power system-on-a-chip (SoC) with integrated Wi-Fi and Bluetooth capabilities. It is widely used in Internet of Things (IoT) projects, robotics, and automation applications. This module is based on the ESP8266 microcontroller, which provides a powerful and flexible platform for developing connected devices.Technical SpecificationsMicrocontroller: ESP8266
Wi-Fi: 802.11 b/g/n
Bluetooth: 4.0
Operating Frequency: 2.4 GHz
Flash Memory: 4 MB
SRAM: 96 KB
I/O Pins: 19 (including 2 SPI, 2 UART, 1 I2C, and 1 I2S)
Power Supply: 3.3 V
Current Consumption: 50 mA (average), 200 mA (maximum)Code Examples### Example 1: Wi-Fi Client ConnectionIn this example, we will connect the ESP12E module to a Wi-Fi network and send an HTTP request to a web server.Hardware RequirementsESP12E module
Breadboard and jumper wires
Power supply (3.3 V)Software RequirementsArduino IDE (version 1.8.10 or later)Code
```c
#include <WiFi.h>const char ssid = "your_wifi_ssid";
const char password = "your_wifi_password";
const char serverUrl = "http://example.com";WiFiClient client;void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to Wi-Fi...");
}
Serial.println("Connected to Wi-Fi");
Serial.println("Initializing HTTP client...");
}void loop() {
if (WiFi.status() == WL_CONNECTED) {
HTTPClient http;
http.begin(client, serverUrl);
int httpCode = http.GET();
if (httpCode > 0) {
Serial.println("HTTP response code: " + String(httpCode));
String response = http.getString();
Serial.println("Response: " + response);
} else {
Serial.println("Error sending HTTP request");
}
http.end();
}
delay(5000);
}
```
OutputThe code will connect the ESP12E module to the specified Wi-Fi network and send an HTTP GET request to the specified server URL. The response code and response content will be printed to the serial monitor.### Example 2: MQTT Publish and SubscribeIn this example, we will use the ESP12E module to publish and subscribe to MQTT topics using the Mosquitto MQTT broker.Hardware RequirementsESP12E module
Breadboard and jumper wires
Power supply (3.3 V)Software RequirementsArduino IDE (version 1.8.10 or later)
PubSubClient library (version 2.8.0 or later)Code
```c
#include <WiFi.h>
#include <PubSubClient.h>const char ssid = "your_wifi_ssid";
const char password = "your_wifi_password";
const char mqttServer = "mqtt://your_mqtt_broker_ip:1883";
const char mqttTopic = "your_mqtt_topic";WiFiClient espClient;
PubSubClient client(espClient);void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to Wi-Fi...");
}
Serial.println("Connected to Wi-Fi");
client.setServer(mqttServer, 1883);
}void loop() {
if (WiFi.status() == WL_CONNECTED) {
if (!client.connected()) {
Serial.println("Connecting to MQTT broker...");
if (client.connect("ESP12EClient")) {
Serial.println("Connected to MQTT broker");
client.publish(mqttTopic, "Hello from ESP12E!");
} else {
Serial.println("Failed to connect to MQTT broker");
}
}
client.loop();
delay(5000);
}
}void callback(char topic, byte payload, unsigned int length) {
Serial.print("Received message on topic ");
Serial.print(topic);
Serial.print(": ");
for (int i = 0; i < length; i++) {
Serial.print((char)payload[i]);
}
Serial.println();
}
```
OutputThe code will connect the ESP12E module to the specified Wi-Fi network and MQTT broker. It will then publish a message to the specified MQTT topic and subscribe to the same topic to receive messages. Any incoming messages will be printed to the serial monitor.Note: Make sure to replace the placeholders (`your_wifi_ssid`, `your_wifi_password`, `your_mqtt_broker_ip`, and `your_mqtt_topic`) with your actual Wi-Fi network credentials and MQTT broker settings.