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Topic: ESP8266 to Arduino UNO - UDP receiver (Read 575 times) previous topic - next topic

Jordo

#15
Mar 16, 2017, 11:35 pm Last Edit: Mar 16, 2017, 11:43 pm by Jordo
Hardware and Softserial both on Baud: 115200

Hardware serial
TX ESP -> TX Arduino
RX ESP -> RX Arduino

I tried this aswell
RX ESP -> TX Arduino
TX ESP -> RX Arduino

______________________________________________________

Software serial
TX ESP -> RX Arduino (Virtual)
RX ESP -> TX Arduino (Virtual)

Code: [Select]
#include "SoftwareSerial.h"
SoftwareSerial Serial1(5, 6); // RX, TX


- Jordo


- Jordo

pert

Hardware serial
TX ESP -> TX Arduino
RX ESP -> RX Arduino
There's your problem. You should always connect TX-RX, RX-TX unless you're only using the UNO as a USB-serial converter to control the ESP8266 directly from your computer, in which case TX-TX, RX-RX is correct but only because that's actually still a TX-RX, RX-TX connection with the USB-serial chip on the Uno.

Jordo

Thanks for your help,

I will give it a try again with
TX -> RX, RX -> TX

- Jordo
- Jordo

Jordo

It is working now!
Thanks for all the help!

- Jordo
- Jordo

pert

Glad to hear. Good job getting it working, enjoy!

mistergreen

#20
Mar 19, 2017, 08:48 pm Last Edit: Mar 19, 2017, 08:49 pm by mistergreen
Uno sends out 5V signals. ESP requires 3.3V. You can possible fry your ESP at some point. You might need a logic 3.3V <-> 5V converter.

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