I’ve been knee deep in tutorials and forums for a week or two now trying to develop an electronic design for a light sequence of 81 LED rings… I haven’t found the answer to all of the questions just yet.
I’ve measured the current drawn by each individual circuit of LEDs and done the math, I’ve checked up on the data sheets of the components I’m using, and I’ve implemented everything I’ve learnt from all of the video tutorials and threads I’ve followed on forums like this one, but I’m still a little nervous that my inexperience will bite back at some point.
My three main concerns are as follows, though I feel that I may have them covered:
Problem 1: there are lots of lights!
Solution: 11 shift registers (can I even get away with that many SRs)
Problem 2: they’re 12v
Solution: a separate power supply and MOSFET STP16NF52 to step up the voltage
Problem 3: Overall current draw is 13.33Amps!!
Solution: spread the power supply across the board to prevent overloading any one terminal.
If anyone wouldn’t mind glancing over the fritzing I’ve put together and give me some feedback I’d be very grateful. Recommendation or reprimand, anything to improve the piece and prevent a fire! There might be something daft that I’ve missed.
The fritzing diagram conceals some of the severed strips on the board under components - you might be wondering.
Thanks all very much.