SounDuke Posted September 9, 2005 Report Share Posted September 9, 2005 Hello, does anyone know where to find a 2x10 vfd bargraph (1x10 ok too)?Thanks in advance Quote Link to comment Share on other sites More sharing options...
Screaming_Rabbit Posted September 10, 2005 Report Share Posted September 10, 2005 ... why don't make one out of a single line character vfd?http://www.parallax.com/images/robotics/machining/rpm_display/avi/RPMDisplay.AVIhttp://cgi.ebay.com/D013-NEW-Noritake-Itron-VFD-Fluorescent-Display-Module_W0QQitemZ7544220822QQcategoryZ26206QQssPageNameZWDVWQQrdZ1QQcmdZViewItemGreets, Roger Quote Link to comment Share on other sites More sharing options...
SounDuke Posted September 11, 2005 Author Report Share Posted September 11, 2005 Hi,I thought about it, but since I designed the circuit with an LM3915 to monitor on logarithmic scale audio signals amplitude, I don't know how to implement it to a normal VFD. Have you got some clues on how to do it (LM3915 can drive up to 10 leds, more than 10 would be really appreciated ;) Maybe using another IC? Quote Link to comment Share on other sites More sharing options...
raphael Posted September 11, 2005 Report Share Posted September 11, 2005 Have you got some clues on how to do it (LM3915 can drive up to 10 leds, more than 10 would be really appreciated Maybe using another IC?I have no experience with VDFs but you can cascade two LM3915 for up to 20 LEDs. Look at the datasheet:http://www.national.com/ds.cgi/LM/LM3915.pdfRaphael Quote Link to comment Share on other sites More sharing options...
SounDuke Posted September 11, 2005 Author Report Share Posted September 11, 2005 Thanks raphael, the question is: the datasheet shows how to interface the lm3915 to VFD bargraph.normal VFD's (I'm used only to noritake U-series so same interface as HD44780) offer same pinning of standard hd44780 lcd's. there are not as many pin as character number on display, that's because I don't know how to interface the LM3915 to a VFD Quote Link to comment Share on other sites More sharing options...
SounDuke Posted September 11, 2005 Author Report Share Posted September 11, 2005 I forgot: the best deal would be to use one vfd 2x16 to monitor a stereo signal Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.