I am trying to connect the UNO with nodemcu via software serial. When i open the serial monitor of the Nodemcu all am getting is this …
I tried the Combinations of AT firmware and Blynk Lib. I tried from Blynk 0.3.3, 0.4.8, 0.5.8 and random versions in between.
“( While it seems to work with all of these versions, we observed that the AT version 18.104.22.168 works best.)”
this was given in the Blynk’s page so flashed the nodemcu with the exact same firmware and tested with the AT command AT+GMR and it returned
AT version:22.214.171.124(May 11 2016 18:09:56)
Ai-Thinker Technology Co. Ltd.
Jun 13 2016 11:29:20
When i remove the Tx and Rx pin and reboot the nodemcu and open the serial monitor i automatically get
WIFI GOT IP
And on UNO’s Serial monitor i am not getting any output [I dont really remember in which version(as i tried many version) the BIG Blynk logo and version came on the serial monitor. but did not connect to the server.] serial print and debug is present in the program but its not giving any output. Even the nodemcu is set to proper baud rate with
as well as
and it returned
I have another nodemcu running on local server and its connected.
now i need this new Uno + Nodemcu to connect to the same server.
i have used
Blynk.begin(auth, wifi, "xxx", "xxxx", "192,1xx,1,1xx", 8080);
Is this the way ?
And the power is fed by an power full power supply. So no power problem…
the connection of serial communication is
UNO Pin 2 >Nodemcu RX
UNO PIn 3 > Nodemcu Tx
Gnd is Common between both device.
Right now USED
AT version:126.96.36.199(May 11 2016 18:09:56) [Blynk suggested]
(and also other latest few, and too old as well)
also tried with
Blynk Lib version
0.4.8 [tried 0.3.3, 0.5.8]
Tried with 5 different Nodemcu
and also purchased a new nodemcu and just Run the AT command and get the version and confirmed it worked and connected to Uno. No other sketch was uploaded.
I also tried some sketches found on the Community which worked out for other users with the same setup (but not nodemcu may be) just changed the ssid and pass and ip address.
Is there any mistake am doing in the process ? Read all the Threads on the Blynk community but did not find suitable solution for my problem.
Or is it not able to use the Nodemcu itself ? Only ESP-01 should be used ??
I surfed the community and google now every link appears to be Blue saying its already Read.
I am not understanding where am going wrong …
Can some one point me out in the right direction !!!