---
categories:
- embedded
date: 2015-10-14
title: Quick guide - Flashing an ESP8266
---

Get an FTDI, the Arduino IDE, add the ESP8266 plugin to the IDE.

Then connect TX↔RX, RX↔TX, GND↔GND, VCC↔3V and CHPD↔3V.

To enter the flashing mode, connect GPIO0↔GND. Then briefly touch RST↔GND.

After flashing, disconnect GPIO0 from GND.

RX and TX can later be used as GPIOs. The blue led is on when TX is low.