Arduino Uno and USB serial "Wasn't on line yet" error

Need Help With My Project
1

Project with Android, Arduino Uno and serial usb D13 worked for 1 day. Went offline and could not get it back online. Deleted project and created again, uninstalled Blynk app and reinstalled app. Now I get error “Wasn’t on line yet” after pressing play button. This info is from pc.:\Users\Paul\Blynk v0.5.3\Blynk\scripts>blynk-ser.bat -c com3
Connecting device at com3 to blynk-cloud.com:80…
OpenC0C("\.\com3", baud=9600, data=8, parity=no, stop=1) - OK
Connect(“blynk-cloud.com”, “80”) - OK
InOut() START
DSR is OFF

Need help or direction for debugging.
Thanks

2

Are you certain that you’re using the new auth code, from your new project, and that there aren’t any incorrect/illegal characters that are caused by copying/pasting it incorrectly?

Pete.

3

Pete,
Yes I did check the auth code. I also deleted it and copy and pasted again. It looks right to me.

Thanks
Paul

4

Pete,
Is there any way to verify my android phone is connecting to Blynk server?

Thanks
Paul

5

I think you’d get the “juggling balls” animation, followed by a can’t connect message if the app couldn’t see the server.

Pete.

6

I get the juggling balls for a second then I get the play button. But when hitting play button I immediately get red 1 Wasn’t on line yet.

7

If you can press the play button your app is connected to the server.

Looks more like a problem with a firewall on your PC or on your router.

8

IBK, thank you very much I will check it

9

IBK,
turned off firewall and rebooted router still get the same error. Any other suggestions would greatly be appreciated.

Thanks

10

@PWK
I’d try to add a serial port with softserial and add …

#define BLYNK_DEBUG
#define BLYNK_PRINT SoftSerial

… and then check the output to see what data is sent and received.

11

Note that you will need a seperate USB-TTL adapter and use another terminal program like termite to view the debug output.

12

IBK,Gunner

Thanks for the information. I did look at the termite program but is a little complicated for me. This was my first project with Blynk and it went without any issues. But in only worked for one day, when it went offline I could not get it back online or any new projects. Just seems strange to me for such a simple project. My goal was to connect with WiFi. I ordered a SparkFun WiFi Shield - ESP8266 and WiFi Module - ESP8266. Hopefully I have better luck WiFi. Thanks for your help.

Paul

13

IBK,Gunner

Good news! Online since 11;35 AM Aug 6. Turned off firewall and connected LAN cable from router to laptop and then I was able to get project online. Then I turned firewall back on and removed LAN cable, power cycled laptop and now PC is connected by WiFi the way it was originally and I can still get the project online. Not sure what the root cause was but just happy it works. Thanks again for your help.

Paul

14

I think the firewall is a red herring. If the firewall was blocking traffic on port 80 then you wouldn’t have any website access on the laptop.

Pete.

15

@PeteKnight
The firewall usually not only looks at ports but also grants access for certain programs.
Therefore the fact that the browser can access a webserver on port 80 does not imply that
any other program has this right as well …