What is the EN pin on ESP8266?

What is the EN pin on ESP8266?

EN pin – The ESP8266 chip is enabled when EN pin is pulled HIGH. When pulled LOW the chip works at minimum power. RST pin – RST pin is used to reset the ESP8266 chip. WAKE pin – Wake pin is used to wake the chip from deep-sleep.

What is the use of TX pin in ESP 8266?

ESP8266 Pin Configuration

Pin Number Pin Name Normally used for
1 Ground Connected to the ground of the circuit
2 TX Connected to Rx pin of programmer/uC to upload program
3 GPIO-2 General purpose Input/output pin
4 CH_EN Chip Enable – Active high

How many GPIO pins does ESP8266 01 have?

The ESP8266-01 is the smallest ESP8266 module and only has 8 pins. Of these VCC, GND, RST (reset) and CH_PD (chip select) are not I/O pins but are needed the operation of the module. This leaves GPIO0, GPIO2, TX and RX available as possible I/O pins, but even these have pre-assigned functions.

What are the 8 pins in ESP8266?

The ESP8266 ESP-01 module had 8 pins. These are VCC, GND, TX, RX, RST, CH_PD, GPIO0 and GPIO2. Connect the VCC and GND to 3.3V (the ESP-01 module is not compatible with 5V so 3.3V is preferred). The rest of the connections are made accordingly (GND to GND, TX pin to TX of Arduino).

How can I control a relay using ESP8266?

All these are essentially based on ESP8266, the only difference is the number of GPIO pins. We will also use an app developed by MIT App Inventor through an Android device in this project. This app can be installed on your android device and then by connecting it to ESp8266, you can control a Relay through the same Wi-Fi connection your phone uses.

How to program esp01 / 01S relay module tutorial?

In this tutorial, we only used the following materials: and last but not least, ESP01/01S Relay Module. We connect ESP8266 WiFi Serial Transceiver Module to ESP01/01S Relay Module so that we can control the relay via WiFi. To program ESP8266, FTDI Converter is required to be connected with ESP8266.

What is the SDK for ESP8266 microcontroller?

ESP8266 (ESP-01) is a small module that allows microcontrollers to connect to a Wi-Fi network and make simple IP (Internet Protocol) connections. It can be programmed by using Arduino, NodeMCU IDE or ESP8266 SDK. Several other modules like ESP-02, ESP-07 were also released.