Can't upload (RX pin) #1990
Description
I am building a project using esp8266.
When I connected
Vcc (esp ) => Vcc (Arduino 3.3 v)
Ground (esp ) =>Ground (Arduino)
CH_PD pin => 3.3 v
TX (esp) => TX (Arduino)
RX (esp) => RX (Arduino)
everything is fine. I can upload and use AT command in serial monitor.
But I have downloaded a project file and see how they are connected like this
Vcc (esp ) => Vcc (Arduino 3.3 v)
Ground (esp ) =>Ground (Arduino)
CH_PD pin => 3.3 v
RX (esp) => TX (Arduino)
TX (esp) => RX (Arduino)
I follow the instruction and suddenly found many errors.
This is the error shown
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x41
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x54
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x2b
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x52
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x53
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x54
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x0d
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x0a
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x0a
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x0a
After that I tried to pull the RX(Arduino) pin out , just let it empty and the result is I can upload
But seems it did not work for the output.
So, what should I do? can anyone give me a suggestion?
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