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---
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.
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