B4R Question ESP 8266

[jerryjukem]

I am trying to send serial out the tx pin on 8266. What is working: network data from tablet,lcd output displaying received data, using serial2, i do get something out of tx pin and the scope looks like serial, but using realterm to read data, nothing correct. If I send the number 1, I get a "g",number "2", I get a 3. Multiple characters it scrambles. I am 99% sure it is not baud as I have tried all the settings. What didnt work: software serial would not load, I think there are some pin conflicts internally. Any kind of example of using tablet to wifi to 8266 and 8266 uart out to pic chip(or any uart) would be helpful.

 

[BillMeyer]

May I ask a few questions ?
1. Realterm I am not familiar with but I presume it is on a PC ?
2. How did you make the connection from the ESP8266 to whatever where you were getting the wrong data from ? In other words - show us your wiring diagram.

I have an idea where your problem might lie but need this information first before I make an assumption.

 

[jerryjukem]

May I ask a few questions ?
1. Realterm I am not familiar with but I presume it is on a PC ?
2. How did you make the connection from the ESP8266 to whatever where you were getting the wrong data from ? In other words - show us your wiring diagram.

I have an idea where your problem might lie but need this information first before I make an assumption.

I am going from the TX pin 8266 to com port pin on pc. I am only trying to transmit. Realterm is pc app that allows you to see activity on com ports, like teraterm app. you can adjust all settings to check baud rates, etc. I have been doing different uart stuff for years and understand about grounding, etc. At this time I do not know how to upload file contents, unless the answer is cut and paste.
Thank you

 

[BillMeyer]

Sorry my Friend - classic case of incompatible hardware.

All is explained here https://www.sparkfun.com/tutorials/215

Good luck and Enjoy.

 

[tigrot]

PC always uses an EIA level serial interface(-12V,+12V), Arduino has a native TTL/CMOS level(0V.+5V/3.3V) interface. So you need an interface converter, like Bill's suggestion. Better buy a module from market.