Asked — Edited
I'm really sort on digital ports on my rad project. I don't have any more digital ports left. I don't want to spend +$10 on a tip circuit because that wont allow me to turn individual leds on and off. Is there an alternate way I could power them?
Upgrade to ARC Pro
Become a Synthiam ARC Pro subscriber to unleash the power of easy and powerful robot programming
Let us know what you had in mind.
I've doubled up LED's connected to the EZB just to keep simple, but it all depends on your plan.
Or like myself, always said to my two daughters , if the request was valid(in our opinion) to provide half of the financing and the young person provide the other half. That means finding 40 dollars from cutting grass or....raiding you Uncles empty bottle stash and returning them for deposit values.......Thats just a few creative financing ideas.
Did I ask......when is your birthday coming up?
@Kudo's method of multiplexing could work but it would be a lot of data being passed from PC to EZ-B. Considering you have a limit of how much you can send and receive in one second fast switching of ports to enable multiple LEDs would be a real strain on that and has a very high possibility of bottlenecking the communications (after all, a 5 x 5 matrix would have 25 very fast port switches required, best case scenario is 250ms timings which is 100 commands per second, benchmark shows it's capable of 40-50). As I said originally, multiplexing was mentioned before and concluded as being a bad idea. I may knock up a test at some point with a 3 x 3 matrix, 4 x 4 matrix and 5 x 5 matrix and test to see if it provides acceptable results - it's another thing added to the ever growing list As is an I2C expander for driving LEDs
And there's also that 2 pin plug above D14.
The +5 and Ground of the digital track should also work if you really wanted to use them.