At 04:30 PM 5/9/2008, you wrote: >Hmm. "Band up" and "Band down" buttons, plus 4 LEDs for feedback. Use 5 LEDs >if you want 32 bands, etc. Or, you can make a project of it and have it send >it in Morse at 60 wpm. > >Or, use a joystick type button. Up/down for bands. Left/right to adjust the >center freq. in the band. Use however many LEDs you need to figure out where >you are. >
With all that I/O you need a larger chip with more pins. I bought two items for display, so I can experiment; 4 digit 7 segment display LED, flash one set of numbers and then the rest for a 8 digit display or use 2 of them. A 10 segment 2 color LED bar. Actually you could do black, red, amber, or green with a little bit of software Both were cheap (< $1.50) and very high efficiency, and the CPU chip I'm using is a 28 pin ATMEGA88 ($2) which has plenty of code space and I/O. Cecil K5NWA www.softrockradio.org www.qrpradio.com "Blessed are the cracked, for they shall let in the light."
