Go Down

Topic: Led matrix 3v? (Read 1 time) previous topic - next topic

amacmullen14

So I posted this idea in a topic that I had made, but it sunk down quickly.  I didn't want to reposted it or bump a ton in the hardware section, so I am posting it here.
Here it is:

I have 2 rg 8*8 small led matrices but I do not have enough resistors.  (only 8).  I am using three shift registers (74HC595)  and one sink driver (ULN2803) for each matrix.
Can I run the ICs off 3v, and use the resistors between the arduino pins and the ICs, and connect the two grounds?
Would this make it so I didn't need 32 resistors as I normally would?

Thanks [smiley=cheesy.gif]

Grumpy_Mike


amacmullen14

Well that was concise.

Grumpy_Mike

well i thought we had all the discussion the last time you posted.

amacmullen14

Not to the idea about the 3v thing, which, because I an a noob at electronics, I thought it would work.  I posted that idea, but then the topic sunk a couple pages really quickly.  Woops, I was wrong.  

Go Up