It's nothing about special code, program logic works. But even a simple serial echo program dosen't work.
Baud rate tried 115200, 19200, 57600.
Arduino Uno
Raspberry pi 2
ESP8266-01
ESP8266-12E
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Moderator: igrr
martinayotte wrote:To diagnose and figure out where is the issue, you can still use your USB-TTL by connecting RX only, on the Arduino TX and then on the ESP TX to sniff the communication between both.
That will help you to figure out who is not talking at proper time.
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