Controlling led rgb strips with less components
$8-15 USD / hour
I am building my own 7 segments rgb display
Each segments contain 1 rgb led common anode
So the microcontroller sends the output to turn each color of each led
But with this I am using 21 pins of the microcontroller since there are 7 segments and need 3 pins per color of segment
I am using uln2803 since the rgb led is 12v
So I need you give me a purpose of wich compoenents use to reduce the BoM because at moment I am using 1 microcontroller and 3 uln2803 per display, and I am building a clock so need 4 segments
I am paying only 10 usd, no more because I just need an answer and not the diagram nor code
Project ID: #6581812
About the project
Awarded to:
Hi, I can draw you a schematic and email you. instead you can use 1 micro for the whole display, and 7 cheap npn transistors and 7 cheap pnp transistors and 7 cheap logic level mosfets for the whole display not per seg More