Issues with my ESP8266

Using Arduino Networking, Protocols, and Devices
1

Hi pros of Arduino,

I have a ESP8266 which I would like to enter the AT commands for the following project below:

But I was unable to get a AT command at the serial monitor when I typed AT into it.
I suspected that the module was spoilt and decide to get another one, but also the same issue.

Now I am wondering if the schematics is correct...?

I have attached the code as well.

Regards
John

sketch_mar16a.ino (576 Bytes)

2

If you want to do anything useful with the ESP, avoid using AT commands.
Instead, try programming it directly:
A Beginner's Guide to the ESP8266

Pieter

3

LexenZ:
Hi pros of Arduino,

I have a ESP8266 which I would like to enter the AT commands for the following project below:
Learn How to Setup the Wifi Module ESP8266 by Using Just Arduino IDE - Electronics Lovers ~ Technology We Love

But I was unable to get a AT command at the serial monitor when I typed AT into it.
I suspected that the module was spoilt and decide to get another one, but also the same issue.

Now I am wondering if the schematics is correct...?

I have attached the code as well.

Regards
John

The ESP modules do come by default with the AT firmware.
The ESP-01 modules I have has a default baud rate of 115200 and you need to set Serial Monitor for /r/n

Looks like the author of that article you linked copied the schematic from Martyn Currey's website.
http://www.martyncurrey.com/arduino-to-esp8266-serial-commincation/

You may be able to use the Arduino Uno's 3.3V to power the ESP-01, but the general consensus is to have a dedicated 3.3V power source. This is an important issue when working with the ESP8266.

.

4

What sort of ESP module do you have?

Breakout (daughter) board?

Are you using an Uno?
Mega?

With these boards in my experience it is not necessary to load a program beyond the "bare minimum". That is assuming you wire it to default Tx, Rx pins.

Warning-- I know very little, just got started myself, but I know it can be very frustrating (i.e. lots of modules available, some with old firmware, etc.). I am using ESP8266 as a 'dumb' serial to wi-fi bridge, as PieterP calls it, he is a true expert, I am just a newbie.

5

agrp87132:
With these boards in my experience it is not necessary to load a program beyond the "bare minimum".

The "bare minimum" does NOTHING.

6

Well nothing is pretty much all you need to run serial monitor and use basic AT commands, with the caveat you have it wired up correctly.

Now, if you can actually do anything useful, beyond making sure it's working, now that's open to debate.

7

agrp87132:
Well nothing is pretty much all you need to run serial monitor and use basic AT commands, with the caveat you have it wired up correctly.

Now, if you can actually do anything useful, beyond making sure it's working, now that's open to debate.

You don't need to upload anything to the Arduino to use the Serial Monitor.

However,
I prefer to use Termite when in Windows. That along with a USB-TTL adapter and leave the Arduino out of it if I am interested in sending and receiving AT commands.