CircuitGeek

You would like to create a LED Matrix, but the only matter is you don’t want to get too fussy with soldering each LED individually?
Well, there is always a good alternative here and it’s doesn’t costing you too much.

Those components that needed are:

Two 5×7 LED Matrix Displays
Solder Breadboard
Transistors
Resistors
4017 Chip (For switching in between the columns)
Wires, [...]

Are you looking for the more efficient ways to create a smaller, excellent portability and longer batteries life discrete LED color organ?

Then, you have come to the right place…

As a programmer, we always face one common problem: lack of output lines. I’m known that you will need another micro-controller for overcome this matter.
However, the designer of ‘508A have created a 5 output links in an 8-pin chips and this truly awesome!
Let’s see how we can benefit from this innovation.
1. LED and Piezo on [...]

If you a gardening lover, you must be annoy that it is hard to tell, whether the ground of the flowerpot is running out of water or not.
However, with the help of this CMOS quad Schmitt, you can easily detect the flowerpot condition just in a second.

First, you need to have these components ready:

470k 0.33W [...]