3.3 V to 5 V
3.3 V to 5 V
300 mA
Supports voltage regulator for powering external devices
Onboard power indicator LED
### Dimensions and Weight
49 mm x 26 mm x 12 mm (L x W x H)
approximately 15 grams
Functionality
| The NodeMCU ESP8266 AMICA CP2102 WiFi Development Board is designed for a wide range of IoT applications, including |
Wireless sensor networks
Robotics and automation
Home automation
Wearable devices
IoT prototyping and development
The board's Wi-Fi capabilities enable it to connect to the internet, allowing for remote monitoring and control of devices, data transmission, and communication with cloud-based services. The NodeMCU firmware and Lua programming language provide a flexible and easy-to-use development environment, making it accessible to developers of all skill levels.
Conclusion
The NodeMCU ESP8266 AMICA CP2102 WiFi Development Board is a powerful and feature-rich IoT development board that provides a comprehensive set of features for building innovative IoT projects. Its ease of use, flexibility, and low cost make it an ideal choice for both hobbyists and professionals alike.
NodeMCU ESP8266 AMICA CP2102 WiFi Development Board DocumentationOverviewThe NodeMCU ESP8266 AMICA CP2102 WiFi Development Board is a popular microcontroller board that integrates the ESP8266 Wi-Fi System on a Chip (SoC) with a USB-to-Serial converter (CP2102) and a breadboard-friendly layout. This board is ideal for IoT projects, prototyping, and development.Hardware SpecificationsMicrocontroller: ESP8266EX (Tensilica LX6)
Wi-Fi: 802.11 b/g/n
USB-to-Serial Converter: CP2102
Operating Voltage: 3.3V
Input Voltage: 7-12V
Digital I/O Pins: 13
Analog Input Pins: 1
Flash Memory: 4MB (32MB available on some versions)Software DevelopmentThe NodeMCU ESP8266 AMICA CP2102 WiFi Development Board can be programmed using the Arduino Integrated Development Environment (IDE) or the NodeMCU firmware.### Example 1: Connecting to Wi-Fi and Sending Data to a ServerThis example demonstrates how to connect to a Wi-Fi network and send data to a server using the Arduino IDE.Code:
```c++
#include <WiFi.h>const char ssid = "your_wifi_ssid";
const char password = "your_wifi_password";
const char serverUrl = "http://example.com/data";WiFiClient client;void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi...");
}
Serial.println("Connected to WiFi");
Serial.println("Initializing connection to server...");
}void loop() {
if (WiFi.status() == WL_CONNECTED) {
HTTP.request("GET", serverUrl);
int responseCode = HTTP.responseStatusCode();
if (responseCode == 200) {
String responseData = HTTP.responseText();
Serial.println("Received data from server:");
Serial.println(responseData);
} else {
Serial.println("Failed to send data to server.");
}
} else {
Serial.println("Disconnected from WiFi.");
}
delay(10000);
}
```
Explanation:The code initializes the Wi-Fi connection using the `WiFi.begin()` function, passing the SSID and password as arguments.
Once connected, the code sends a GET request to the specified server URL using the `HTTP.request()` function.
The response code and data are retrieved using the `HTTP.responseStatusCode()` and `HTTP.responseText()` functions, respectively.
The received data is printed to the serial console.### Example 2: Reading Analog Input and Sending Data to a ServerThis example demonstrates how to read an analog input and send the data to a server using the NodeMCU firmware.Code:
```lua
-- Initialize Wi-Fi connection
wifi.setmode(wifi.STATION)
wifi.sta.config("your_wifi_ssid", "your_wifi_password")
wifi.sta.connect()-- Initialize analog input pin
adc_pin = 0-- Read analog input and send data to server
tmr.alarm(1, 10000, 1, function()
local adc_value = adc.read(adc_pin)
local httpClient = http.createClient()
httpClient:connect("http://example.com/data")
httpClient:on("send", function(httpClient)
httpClient:send("GET /data?value=" .. adc_value .. " HTTP/1.1
Host: example.com
")
end)
httpClient:on("receive", function(httpClient, responseBody)
print("Received response from server:")
print(responseBody)
end)
end)
```
Explanation:The code initializes the Wi-Fi connection using the `wifi.setmode()` and `wifi.sta.config()` functions.
The analog input pin is initialized using the `adc.read()` function.
The code uses a timer to read the analog input and send the data to the server every 10 seconds.
The `http.createClient()` function creates an HTTP client instance, which is used to send a GET request to the server with the analog input value as a query parameter.
The response from the server is printed to the console using the `print()` function.These examples demonstrate the basic functionality of the NodeMCU ESP8266 AMICA CP2102 WiFi Development Board and how to use it in various IoT projects.