OLIMEX© 2017
ESP8266 with Arduino IDE
CHAPTER 2: REQUIREMENTS
CHAPTER 2: REQUIREMENTS
The minimal connection requires several prerequisites.
2.1 Hardware requirements
2.1 Hardware requirements
Note that you might already own all the necessary hardware listed below. For example, as long as you
have a fitting 5V power supply unit or USB<->serial cable there is no need to purchase new ones.
2.1.1 ESP8266 board
2.1.1 ESP8266 board
The main component of the setup. You need one of the following three boards, which are suitable for
beginners:
•
ESP8266-EVB
•
ESP8266-EVB-BAT
•
ESP8266-EVB-BAT-BOX
MOD-WIFI-ESP8266-DEV and MOD-WIFI-ESP8266 are not suitable for beginners with ESP8266. The main difficulty if you use
one of those two boards would be changing the boot mode of the board. This would require cutting and soldering of SMT
jumpers (or shortening pins via wires).
2.1.2 Power supply adapter
2.1.2 Power supply adapter
The ESP8266-EVB board gets powered via the barrel power jack named “PWR”. You need to apply exactly
5V DC.
The corresponding power supply plug (or female jack) that fits the DC barrel has 2.1mm inner diameter
and 5.5mm outer diameter. The length of the male plug should be between 10mm and 14mm.
We distribute affordable 220V<->5V adapters that fit the board's barrel jack. Search our web-shop for SY0605E and SY0605E-
CHINA.
2.1.3 USB <-> serial cable
2.1.3 USB <-> serial cable
You might already have such a cable. In case you don't, you would need to get such an adapter cable due
to a couple of reasons:
•
the voltage levels of board's RXD and TXD are lower than the voltage levels of computer's TXD
and RXD (even if your computer has a native serial port). The adapter takes care of the level
adjustment;
•
most modern computers lack serial port.
The are two very important considerations to make, when selecting the cable that would work for you:
Page 5 of 15
