I started from scratch, literally. This one I created with ❤️ the hardware, and the code. It was fun!!
Led Grid Display 6*24 which can display characters, symbols etc just like a normal display but whith low resloution (144 leds acting as pixel).
For the matrix you will:
- 144 LEDs
- 24 resistors( The value is determent by the type of LEDs, in my case 91 ohm)
- 4017 decade counter
- 6 1KOhm resistors
- 6 2N3904 transistors
- A long Perfboard
- Arduino
- 3 x 74HC595 shift register
- some pin headers.
Blog https://medium.com/@ariesiitr/shivanshu-iitr-62df5b9f3535