Tom with good engineering practice there is no reason why you can't successfully connect using BlueTooth. However good engineering practice isn't always practiced. That's why any commercial manufacturer, constructing an appliance of the kind you describe, must undergo certified testing. However I don't see that as a major obstacle, even if you are not an engineer. What did raise my concern is your AVR. Your AVR will most likely have a 24MHz (hello 12 meter birdies) or 48MHz clock although it could be as low as 12 MHz. It is particularly important your AVR be properly housed and shielded with attention to bypassing of power supply leads even if you are using battery power. Your data cables will likely need some ferrite lumps too. A continuous tuning receiver is a great tool for checking your design. The beauty of amateur radio is you can experiment with your design without big brother looking over your shoulder. After all you will be the first person to suffer if you have RFI problems. Go for it Tom. 73, Fred, AE6QL
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Thomas Horsten Sent: Thursday, July 05, 2012 4:06 AM To: [email protected] Subject: [Elecraft] [OT] Bluetooth and RF Hi guys, I know it's a bit off-topic but there are so many knowledgeable people here that I thought I'll try asking. I've built a multifunction CW keyer with a straight key, paddle, and keyboard input, that uses an AVR microcontroller. Currently I'm using PS/2 for the keyboard input as it's easy to implement in the AVR (and a cheap $2 adapter allows the use of USB keyboards). But for taking on the road with my KX3 (which is stuck in customs since Monday but should hopefully be with me soon), I'd like to use an ultra-compact Bluetooth keyboard, of the type used with smartphones. I am considering doing this by adding a Bluegiga WT12 Bluetooth module (which has an UART interface that can talk to the AVR). Before I begin on this I'd like to know how well Bluetooth can be expected to work in a RF-filled environment (at up to 10W but with the antenna very close, as in portable operations). It'd be a shame to get everything built only to find out that the Bluetooth connection dies every time I transmit. Has anyone got experience with this and/or other comments/ideas? 73, Thomas M0TRN ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
