I have the same problem with AT commands, only have AT working, non other. Is the problem in the software serial sketch maby? I don't have a usb to ttl board, only a usb to rs232 so I really need make it work over the arduino, any Ideas?
I got my JY-MCU, but can't get it to work.Wired with 5V @ 8A going in to Arduino VBus, BT, and 100 pixel LEDs. Pixel data on D4, TX/RX swapped from BT to Arduino (tried both ways).1) When powered, red light on it blinks continuously even with TX/RD unplugged, always, never seen any change.2) When paired I get 2 serial ports: "Com11 - SSP" and "Com12 - SSP (Dev B)". Windows lets me enable or disable 12 in BT settings. 11 is always only in device manager.3) When I try to open either port (at 9600), term program locks up for a few seconds, then says it is open but it doesn't work.Seller said board default was 9600. I was hoping I could just plug this in and do everything (re-program Arduino, send bytes to change LED colors) the exact same as when I connect my TTL board to the same 4-pins and use a cable. The whole thing is installed on my roof, so I'd rather not have to send any AT commands while unpaired or any of that stuff, but I guess I could just pull the BT and connect it to my TTL if I have to.Any suggestions? Which of the 2 serial ports is right? Is the red light supposed to blink no matter what?
I have not got it to connect again since that once. RealTerm gives "apro exception." on one of the ports, and the other port just lags and doesn't work in either direction. Now I removed the device and re-added it, and I have no serial ports. I hate BT! Have you others really got this to work reliably? Maybe I need a different BT dongle?