pcb Driving 10x10 LED matrix with AVR


Posted on Feb 7, 2014

Designing a controller PCB for a 10x10 white LED matrix clock (inspired by the tutorial here ). It`s based off an ATmega328 AVR IC and Maxim DS3234 SPI RTC. However, I`m stuck: I have no idea how to control my custom non-standard 10x10 LED matrix. Originally I was going to use a Maxim MAX7219/7221 IC, but it can only drive 8x8 LED matrices. Then I was looking at some sort of charlieplexing solution with a


pcb Driving 10x10 LED matrix with AVR
Click here to download the full size of the above Circuit.

ULN2803 darlington transistor array. The bright white LEDs I`m using need at least 30mA of current.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Wien bridge oscillator
    Wireless On-Off Switch
    Expandable Graphic Equaliser
    FM wireless transmitters
    Arduino CAN Bus Interface
    Undervoltage delay tripping a circuit
    Ultrasonic transmitter circuit 555



    Top