Looking for a 7 segement small PCB for my prop

turbosupra

Does anyone have a source for a dual or quad 7 segment PCB?

My prop multiplexes four 7 segment LED's and I need them to sit at a right angle compared to the PCB that my prop is mounted to.

It'd be nice to have a very small PCB that could sit at a right angle to my prop and display my LED values.

I haven't chosen a 7 segment size yet, but I am using blue common anodes with a BCD and 4 transistors currently.

RobotWorkshop

Would something like this work for you?

http://www.parallax.com/Store/Accessories/Displays/tabid/159/ProductID/454/List/1/Default.aspx?SortField=ProductName,ProductName

Leon

I designed this, and made a single-sided PCB for it at home:

turbosupra

Hi, who'd have known parallax had one of their own Thank you very much, I may end up using this.

It looks pretty good, except the price is a little high, there was one for $6.50 except it already had a driver and I'm not sure that driver was compatible with my BCD? And I was hoping to use blue LED's instead of red?


http://microcontrollershop.com/product_info.php?products_id=3552

RobotWorkshop wrote: »

Would something like this work for you?

http://www.parallax.com/Store/Accessories/Displays/tabid/159/ProductID/454/List/1/Default.aspx?SortField=ProductName,ProductName

turbosupra

Hi Leon,

Thanks for replying, that looks plausible, what do those pcb's cost when they are etched?

Leon wrote: »

I designed this, and made a single-sided PCB for it at home:

Leon

It's about 82 mm by 66 mm, you should be able to get some prices. I can let you have the files if you want to get one or two made. I'd make some minor changes for a double-sided board.

turbosupra

Looks like expresspcb wanted about $35 a piece ... does that sound right?

That seems high?

Leon wrote: »

It's about 82 mm by 66 mm, you should be able to get some prices. I can let you have the files if you want to get one or two made. I'd make some minor changes for a double-sided board.

Leon

It's about right for a prototype board. It took me about an hour to make that PCB, at home.

Invent-O-Doc

There are a bunch of 4 digit displays at futurlec that combine the segment pins so there are fewer to wire. Sparkfun has them too at a slightly higher price. (Sparkfun also has a serial enabled version in several colors but that adds expense - im not sure how these compare to the parallax versions)

Leon

I've got a similar board that uses those four-digit displays. They do save a lot of wiring.