ESP8266 arduino wireless.

Question

Hello.

I am planning to build a remote controled car with 2 arduinos - one arduino for the car and one for the controller... Now i found this ESP8266 Serial WIFI Wireless Transceiver Modules and i don't know if this is a good thing to use with my project. Can i use two those modules for serial communication between two arduinos ??

bobcroft · Answer

Anej,

As has been said the ESP8266 is a relatively new device and there is not a lot of information on its use yet. For your project I would use the CISECO wireless modules. CISECO do a wireless shield that fits straight onto an UNO, MEGA or one of the clones. These modules cost about £10 each in the UK. They have very good range and are very easy to use, no level shifting is required because it is all built into the shield. There is very good supporting documentation and code examples on the CISECO web site.

camuyano · Answer

Short answer yes with some notes: To use the ESP8266 you'll need to parse the strings you get from the device in order to get the data. The ESP will output different messages about status and things like that that you'll need to handle. All data receive from the ESP will be on a line that starts with +IPD followed by message lenght then data terminated with carriage return line feed. With the ESP8266 you'll need an Access point or one of the them to be an access point. One of the module should be a server and the other a client. Then data can be sent from one to the other. This is a fairly new device, I think it supports direct Wifi but I have not use that. If you want a cleaner serial communication between two Arduinos and they are near one to the other, it may be easier to use a Bluetooth to UART module. Or if they are farther away an NRF24 wireless module is nice (range depends on environment), or maybe an Xbee (xbees tend to be more expensive). The bluetooth modules and the NRF25 are reasonably cheap. The NRF normally a little cheaper than the bluetooth. Do not get me wrong I am in love with the ESP8266 so I will encourage you to give it a try, it should work. You'll need some level shifting (a few resistor or else) to change 5v to 3.3v signals at least on the arduino TX signal (ESP's RX). This is just my opinion, I am no expert. Wait for others to reply before deciding.

ESP8266 arduino wireless.

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