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by MatteP
Tue Nov 22, 2016 7:38 pm
Forum: 10x8 LED Sign
Topic: Help wanted 74HC595 LED sign
Replies: 3
Views: 28680

Re: Help wanted 74HC595 LED sign

It's a little difficult to tell exactly what you have in the picture; but the general form of using a bunch of 595's for output bits is shown not far from the top of the "circuit potpourri" page of my 6502 primer, at http://wilsonminesco.com/6502primer/potpourri.html#22_SR_OUT . This diagram is fro...
by MatteP
Tue Nov 22, 2016 7:32 pm
Forum: The 8x85 RGB LED POV Display
Topic: Can I use MAX7219 as a LED driver IC?
Replies: 0
Views: 29242

Can I use MAX7219 as a LED driver IC?

Can I use MAX7219 as a LED driver IC? MAX7219 datasheet : http://www.kynix.com/uploadfiles/pdf2286/MAX7219EWG2b_93727.pdf CAT3603 is a three channel charge pump LED driver IC from Catalyst Semiconductors that can be operated in either LDO mode or fractional mode. The IC can deliver 30mA per channel ...
by MatteP
Mon Nov 21, 2016 6:35 pm
Forum: 10x8 LED Sign
Topic: Help wanted 74HC595 LED sign
Replies: 3
Views: 28680

Help wanted 74HC595 LED sign

I'm new to electronics so I'm sorry if this sounds stupid. I recently created an LED sign consisting of 97 LED's on a piece of wood that all light up at the same time when I supply it with 3v. I have watched a bunch of videos on electronics and I saw one that used the 74HC595 shift register to light...