uploading code to bluno
Kenneth.Swinney 2026-09-08 23:58:50 32 Views2 Replies I ordered a Bluno a couple of years age and am just now trying to use it.
I am trying to control the Bluno with the Bluetooth for Arduino app on my iphone.
The app is able to find the Bluno and connect.
I was able to load the sample code to send from serial monitor to the iphone and it worked.
However, when I changed the code and tried to upload again, it gives the error message

I have tried disconnecting and turning every thing off, but same response.
Any suggestions on what to try next are welcome.
You can give my method a try.
In your iPhone Settings > Bluetooth, find the Bluno and tap "Forget This Device" (or toggle Bluetooth off entirely).
Plug Bluno into USB. Make sure the LINK LED is OFF.
In Arduino IDE, select Tools > Board > Arduino Uno and the correct COM port.
Click Upload.
After the sketch is uploaded, you can re-pair the iPhone and use the app normally.
Jason.Miao 
