Artesia Posted October 11, 2005 Report Share Posted October 11, 2005 Hi everyone ! I recently stocked up on a bunch of new 7 segment displays; bought more than i needed.. should it interest anyone here; i am able to offer them for 25p each.. Possibly less for more than a handful.. displays are as pictured below..also have some bar graph ones somewhere too. 15x16mm version:Package Style: DIPChar. Height (mm): 13Number of Characters: 1Luminous Intensity Min. (Cd): 600If (Ma): 20 milliampreColour: Redwave length (Peak): 665 nmCircuit Connect: Common CathodeMinimum Operating Temp (øC): -25Maximum Operating Temp (øC): 857x14mm version:similar specs for smaller modulemore data soon.....if this interests you, please contact me or leave a message here to express an interest in these displays.. Thanks. Quote Link to comment Share on other sites More sharing options...
Jidis Posted October 12, 2005 Report Share Posted October 12, 2005 Artesia (or anyone here),I couldn't help but notice these are common cathode. Is this any problem for the LED part of the MIOS code or circuits, other than just rearranging some of the wiring? I've seen a bunch of CC's that I liked, but was afraid to get ;)-George Quote Link to comment Share on other sites More sharing options...
Screaming_Rabbit Posted October 12, 2005 Report Share Posted October 12, 2005 Artesia (or anyone here),I couldn't help but notice these are common cathode. Is this any problem for the LED part of the MIOS code or circuits, other than just rearranging some of the wiring? I've seen a bunch of CC's that I liked, but was afraid to get ;)-George... if you wanna use them for the LC Timecodedisplay, you need CA.Greets, Roger Quote Link to comment Share on other sites More sharing options...
Artesia Posted October 15, 2005 Author Report Share Posted October 15, 2005 Hi,You have a point there, i overlooked the common pin configuration, in relation to these projects..I had a very quick look at the schematics for the dout module & have concluded that it should be fairly easy to make a common cathode mod (in software ?) ...As the current is flowing from one chip - to the next; through the displays. suggesting that it is possible to configure the polarity, of the outputs, on the driver chips.Thus it should be possible to filp this configuration; will ask TK ..as he will probably know the answer already..It's unfortunate that these will not drop into the project by default.. Quote Link to comment Share on other sites More sharing options...
TK. Posted October 15, 2005 Report Share Posted October 15, 2005 Hi,You only need to invert the outgoing values. In MBLC, this can be done in lc_leddigits.inc, search for "call MIOS_DOUT_SRSet", and add "xorlw 0xff" before this function call in order to invert the content of WREGBest Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
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