Does anyone know if what I am trying to do is possible? Absolutely possible:) And if it is, what am I doing wrong?
Jan 19, 2019 - ESP8266 Arduino tutorial – WiFi module complete review. There are many software applications which you can use to. After booting, to be able to use AT commands, module should display “ready” on the serial monitor. Feb 19, 2018 - I've got this ESP8266 WiFi module hanging around that I've never. 
Pin set and have SoftwareSerial send commands to those pins instead.
SoftwareSerial isn't capable of 115200 baud rate (despite 'allowing' this as a setting). Some reports suggest as high as 57600 is workable, though in my experience 9600 is best for reliability. How to change the baud rate on the ESP8266 will depend on the firmware version. I've had success with AT+IPR=9600. You only need to run this command once (it's a persistent setting).
I'd suggest, based on your description, that this is the most likely culprit that's causing the 'garbage' output you describe. A couple of other notes: • The ESP8266 runs on 3v3, not 5v, so you shouldn't have it directly connected to the digital pins—you need to run through a logic level converter. Running 5v can fry your ESP8266. • The Arduino's 3v3 output has insufficient current to support the ESP8266 reliably (50mA Arduino vs up to 300mA for the ESP8266 by some accounts)—try running the ESP8266 off a separate supply. It probably won't affect simple commands like AT but when you try to connect to a network etc. It may cause unexpected device resets. • As noted by others, you need to send r n — so make sure your Serial window is set to send both (this is a drop-down in the serial window).
Does anyone know if what I am trying to do is possible? It is possible, i've done it with 2 arduinos where one was simulating ESP8266 (waiting for ebay order).
And if it is, what am I doing wrong? What you are doing is wrong on most levels, but i think you got most sorted out.
An idea is to implement this little fella: it will save you many troubles later. On your 'WIRING SCHEME 1' you are using the arduino's Hardware serial port to talk directly to the device as if it was connected through a TTL cable or FTDI cable. This means that the arduino device would in theory read from the hardware when talking too the ESP8266, if you have another arduino or a TTL cable, try and connect it to gate 2 and 3 on the 'main' arduino and you should get a similar result as for your example result 2. Since you would that way proxy through the arduino.
If not that would be a place to start debugging. Beside that i could only recommend you in investing in either a TTL 3,3v or a logic level converter. When i got my cable everything worked out of the box. I had lot of problems as well.
In my case problems are almost solved by switching from SoftwareSerial to. It seemed that on the Uno the standard software serial library was not working for me. After switching I started to get results back for the first time. (I also used level shifting and external power supply for 3.3V) And by almost solved I mean - I still get, from time to time, gibberish on the terminal. So even AltSoftSerial isn't a perfect solution. I was using the ESP-07 with a 115200 bps data rate.
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