QuoteI was thinking since Cat5 has 8 wires in it, it would be great to use but I am concerned that the gauge might be insufficient. It depends on how much current you are running through the cable and how long the cables are. Note that putting the shift registers and the LED drivers in the place where the LEDs are makes it easier to control and power them.
I was thinking since Cat5 has 8 wires in it, it would be great to use but I am concerned that the gauge might be insufficient.
Quotethey didn't come with the piece that you would normally set into your board and then set the shift register into that. I have no idea what those are called. Can anyone point me in the right direction so I can order some?If you are saying that you have surface-mount chips, then you need a break-out or adapter board like this...http://www.futurlec.com/SMD_Adapters.shtmlIf you are saying that you need sockets, then something like this...http://www.futurlec.com/SockIC.shtml
they didn't come with the piece that you would normally set into your board and then set the shift register into that. I have no idea what those are called. Can anyone point me in the right direction so I can order some?
74AC299PC- the PC indicates plastic DIP.Cat5 has 4 pairs of 24 guage wire, yes? You are controlling 8 LEDs? Where does the wire that will be the other side of the LEDs come from?That size wire is more than sufficient for 20mA of current, which is about the continuous limit of most 5mm type LEDs.
Depending on how you are building your board, wirewrap sockets might be easier to work with as well.I use these pins to build up a lot of boardshttp://www.marcospecialties.com/product.asp?ic=SIP20Land then wirewrap everything together with 30 guage wirewrap wire. Way quicker than soldering, way easier to make a change or to fix a mistake also.You can get also get a 24 guage wirewrapper and wrap the cat5 to the pins.
I have routinely used cat5/5e cable for low-voltage switching applications, and have a word of advice. If you can get your hands on "patch" quality cable, as opposed to plenum cable, do it. The patch cable tends to be stranded, the plenum is solid conductor. Couple of small radius bends in a plenum cable can cause loss of conductivity / increased resistance, and those are a BEAR to isolate / work out, the stranded-patch cable tends to be more forgiving.The patch cable tends to have thinner / more flexible insulation.The patch cable is usually cheaper. Unless you're worried about any accidental smoke from your project being inhaled in large quantities, go with patch/stranded if you can get it. Plenum cable has to meet all kinds of building codes concerning fire specification / "air handling" qualities, and frankly isn't worth the bother in this regard.
Both sockets will hold the parts securely, both will let you remove the part if needed.Here is a board I wirewrapped with the marco specialty website sockets.A Duemilanove or Uno will have the other kind of socket.The pins can be snipped off in lengths of 2, 3, 8, 10, etc and used for multiple things