Analog TO THE MAX! Freq Readout for the BITX40
Perhaps this was a reaction to a frustrating morning spent trying to get a 20x4 digital display to work with an Si5351 and an Arduino Uno via an I2C bus (I feel my blood pressure rising just due to the typing of those words). After much digital fiddling, I called declared a "BASTA!" and looked around the shack for an antidote for the digital frustration. There on the bench was my fully analog BITX40Module rig, with its homebrew L-C analog VFO. It needed a better frequency readout. And this morning, it got one.
The pointer is Sharpie ink on a bit of PC board. It is held in place by superglue, suspended about 1/4 inch off the chassis (to reduce dial parallax). The numerals are in Dymo tape -- there was not enough room for the "7" but I think I will be able to remember this.
73 Bill N2CQR
Bonjour
ReplyDeleteJe recherche comment mettre unDDS sur le bitx40
73 Paul F5HO
edcoche@gmail.com
Created a sketch (some more work needed) for the BITX40.
ReplyDeleteConnections as done in:
http://ak2b.blogspot.nl/2015/01/si5351-simple-vfo-hardware-setup.html
willing to post my sketch but how do i do this here?
ReplyDeletehttps://lookaside.fbsbx.com/file/MultiFeaturedVFO_new.ino?token=AWxOOxxEVq1voXiJ6Le64Ogm1B61P9s-YmZQjAMXGNIKaNvNrbKJbfHCDXU1_8WF_XeyeXg4k6KjXS_ydEWQHqfF3Ry_Mb0UtsxooAAaFdtQgqT8DD8KplWf9kmXoX7SOs5AsNzuehOBZEku_5mZC7m3TvjGJgAbCm15AQ2vBpereg
ReplyDeleteHope this works. Otherwise drop me a mail via ronvandoremalen @ hotmail . com
I replaced my VFO with a Si5351. All of this is driven by an Arduino (Atmega168), and there's the back-lit LCD to power - I had an insight last evening - well, you're not using the 'TUNING1' connector - if you pull the center out of the 3-pin connector, you have a convenient, regulated, 9V source to power the 'DDS system'. It certainly cleaned up my wiring.
ReplyDelete