ARDUINO WiFi Module

Using Arduino Microcontrollers
1

Dear All

I have successfully connected HC 04 Bluetooth module with my ARDUINO Uno using Rx Tx

Can use same method to connect WiFi module

Please advice

Thanks in advance

2

Not at the same time. (There's only one uart on the uno)
And not while uploading a sketch (same as now)

What WiFi module?

3

DrAzzy:
Not at the same time. (There's only one uart on the uno)
And not while uploading a sketch (same as now)

What WiFi module?

Dear DrAzzy

Thanks for the reply

I am using one at a time

I have WiFi unit LoLin

Please see the link for WiFi unit that I am using

https://www.google.lk/search?q=lolin+nodemcu+v3+arduino&biw=1280&bih=891&source=lnms&tbm=isch&sa=X&sqi=2&ved=0ahUKEwjN5OyOi_3LAhUFeaYKHXTsC-MQ_AUIBigB#imgrc=ssxjB-Dr65XbtM%3A

4

That link leads to search results that aren't specific to one board - is that an ESP8266-based board like NodeMCU?

ESP8266 works, definitely (though as noted, you must disconnect it while uploading sketches). Note that the NodeMCU boards have NodeMCU firmware loaded by default, not the AT-command firmware that is normally used when using the ESP8266 as a wifi adapter for another microcontroller.

5

DrAzzy:
is that an ESP8266-based board like NodeMCU?

Yes I think this is NodeMCU clone. It has Rx Tx pin and I connected it to Uno Rx Tx Correctly and run the following program

void setup() {
pinMode(13,OUTPUT);
Serial.begin(9600);
}

void loop() {

byte value = Serial.read();
Serial.println(value);

}

Serial monitor is showing numbers

do you know good android app to connect to the wifi Module

Can you please advice how pair WiFi module and android app

6

WiFi is not "paired" to an application. You might write an android application that communicates by connecting to it, of course - but it's totally different from how you pair with bluetooth. I mean consider what bluetooth is used for (connectingf wireless mice, headsets, to a device, often a mobile something), while WiFi is used for internet access.
Wifi gives it internet access, so it can act as HTTP server, HTTP client, or (with more work) do more advanced things, but it doesn't "pair".

What do you want it to do?

The steps to take depend on that. Also, on whether you plan to use the AT firmware on the nodemcu board (which is appropriate for many ESP8266 libraries) or put your own code and leave the nodemcu firmware in place.

I have never use the nodemcu firmware. I normally run the AT firmware or Espruino (so I can program in JS - I spent a lot of time programming LUA a few years back, and I have no desire to repeat that). ESP8266 can even be programmed directly with Arduino, using the right core. I haven't done that though - I don't really enjoy writing internet-connected stuff in C because I'm a wimp.

7

DrAzzy:
What do you want it to do?

Dear DrAzzy Thanks for detailed reply

Currently I am controlling my robot ( Car robot ) using Bluetooth ( HC 04 ) module

Example :- Car Turn left / Turn Right / Forward / Reverse

So I need do it same using WiFi Module with WiFi Andriod App

Please advice

Thanks in advance

8

arduino uno originals, messeger Could not find USBtiny device (0x2a03/0x49), help