I’m planning on revisiting my 74HC595 shift register boards in Eagle soon. One of the things I want to add in the next revision is a breakout to the Output Enable pin which allows you to have some PWM control. I never tried it before so I started setting it up to test it. I don’t have any larger breadboards available so I had to use a mini-breadboard. I didn’t like having to lay out the LEDs and resistors, especially on these smaller breadboards, so I put together a line of LEDs on a perfboard. I didn’t bother going on eBay to buy some of those LED bargraph DIPs because I bought a bunch of things on eBay over the holidays so I didn’t want to waste any more time or money.Anyways, here it is connected to a shift register. The PWM worked just fine, though I think it may have looked better on a different color.I already had this piece of perfboard sitting around so I’m pretty happy that the design is pretty optimized. Everything fits on the board without too much wasted space. The 8 pin female header leads to the anodes of each LED and the single female header on the right is connected to all of the cathodes of the LEDs.
Soldering didn’t go too smoothly because I need to find a better tip for my iron. The one I used was a conical tip which doesn’t transfer the heat very well. I have another tip with a flat edge, but the edge is too wide for my liking.
Anyways, that’s it for this quick show-and-tell. Thanks for reading!