I have a SkyBT that works great. Since it looks like the SkyBT will no longer be available for purchase from Simulation Curriculum and after reading that the SkyBT is simply a rebranded "FireFly" Bluetooth to serial adapter from Roving Networks, I decided to order one as a backup. I received my RN-270M today and I think it might be defective but I want to hopefully get some help troubleshooting it. I confirmed that the DIP switches and jumpers are set the same as my SkyBT.
When I power up the RN-270M, this is what happens...
1. The blue and green LEDs blink quickly.
2. The green LED blinks 10 times.
3. The blue and green LEDs blink quickly.
4. The device powers itself off.
I was able to verify that it is broadcasting and available for pairing for the brief period of time that the green LED is blinking. I get the same result whether using NiMH batteries only or batteries plus external power. The red LED does light up when external power is connected.
Again, my SkyBT does not behave like this.
Any ideas what to try for further troubleshooting?