Espressif compatible · NODEMCU-ESP8266

ESP8266 NodeMCU

Name: ESP8266 NodeMCU
Brand: Espressif compatible
SKU: MCU-ESP8266-NODEMCU
Price: 900 KES
Availability: InStock

KSh 900In stock

Quantity

Specification

Part number: NODEMCU-ESP8266
Manufacturer: Espressif compatible
Stock code: MCU-ESP8266-NODEMCU
Category: ESP
Supply voltage: 3.3 V
Output type: 3.3V digital
Connection: USB
Protocol: I2C
Protocol: SPI
Protocol: UART
Protocol: Wi-Fi
Availability: 18 in stock

Details

The ESP32's older, cheaper sibling: single core, Wi-Fi only, and still perfectly good for anything that just needs to get a reading onto a network. If your project is a sensor that posts to a server every minute, this does it for less.

3.3 V logic, not 5 V tolerant. Note the silkscreen labels (D1, D2...) do not match the GPIO numbers you use in code — D1 is GPIO5, D2 is GPIO4. Keep a pinout to hand.

Ask about this part

Answers come from this listing and the assistant can still be wrong — the manufacturer's datasheet is what governs. For anything you are going to wire up, check it there or ask us.

Helpful links

Using this part

Starting points, not finished firmware. Check them against the datasheet.

Join Wi-Fi and report signal strength

cpp · 20 lines

#include <ESP8266WiFi.h>

const char* SSID = "your-network";
const char* PASS = "your-password";

void setup() {
  Serial.begin(115200);
  WiFi.begin(SSID, PASS);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.print("\nIP: ");
  Serial.println(WiFi.localIP());
}

void loop() {
  Serial.printf("RSSI %d dBm\n", WiFi.RSSI());
  delay(5000);
}