Run an 8×8 LED Matrix using 3 pins!

All Comments

  • Hi there, could you tell me how to show countdown animation, from 3 to 1…
    like 3…, 2…, 1…

    Ser Rafik February 12, 2020 7:11 pm Reply
  • I understand a lot after I watch your video.

    Song Creator February 12, 2020 7:11 pm Reply
  • Great video, I like how you progress from an initial idea to a more optimized design. One question though – at 8:34 the resistors are row based yet at 11:00 your pictures shows them column based.

    Enigma758 February 12, 2020 7:11 pm Reply
  • This is an awesome video thanks for sharing all the good information,
    If i want to use an led stripe , do i need to follow the same concept?

    Maher Alsayid February 12, 2020 7:11 pm Reply
  • very clear

    Muthu sundharam February 12, 2020 7:11 pm Reply
  • Thanks man! Now i got to know many others are unnecessarily making this concept complicated. Its very difficult to write control code if you are making a 20 X 20 led matrix, the binary for 20 will be very big and you cant use Int as you exceed its limitation, so I used Float. But yours differential control for each shift register is awesome!

    Aman Agarwal February 12, 2020 7:11 pm Reply
  • K

    Vise Sphee February 12, 2020 7:11 pm Reply
  • Could you use this scheme to control a 9px row x 368 column matrix? I'd even be willing to leave a column on the table if I could do this with 47 shift registers, and only 3 data pins.

    Tim Scott February 12, 2020 7:11 pm Reply
  • (128 >> i) can be replaced with (1 << (7 – i)) which is preferred for readability.

    Ruan February 12, 2020 7:11 pm Reply
  • So I'm making a custom Matrix, and I need it to be an 8×9 matrix, I assume I will have to make use of another shift register right?

    Foster Phillips February 12, 2020 7:11 pm Reply
  • is there a zip file to program ?

    Rizky muharman February 12, 2020 7:11 pm Reply
  • Thank you so much!

    Change starts with the individual February 12, 2020 7:11 pm Reply
  • Propbably a ridiculous question but how do you know which side is the rows on the led matrix and which side is the columns?

    Tegan Cirulli February 12, 2020 7:11 pm Reply
  • Can email you I had a few questions from you

    Armin Arya February 12, 2020 7:11 pm Reply
  • at 9:10 you show a pin schematic for the 74HC595N chip labeling 5th pin on the right Shift, and the 6th pin on the right Store.

    but  @ 10:06 when you show the 2 chip wiring diagram you switch the Shift and store pins coming from the Arduino signal.

    I was just wondering if this was a mistake or something?

    Love the content and thanks for the help so far!

    Joshua Thyer February 12, 2020 7:11 pm Reply
  • very helpfull. tanks

    Armin Arya February 12, 2020 7:11 pm Reply
  • Thank you so much for this explainining

    اكرم عدنان February 12, 2020 7:11 pm Reply
  • I built my own 8*8 matrix, and wired it as shown, when I uploaded the code, all of the LEDs were lit. Could you point me in the right direction to debug the issue? And something that I wasn't quite clear on from your video, should enable and reset be pulled high or low?

    Jack the Aviator February 12, 2020 7:11 pm Reply
  • Maybe a noob question but…where do I connect the data, store and shift pin from the shift registor to the arduino ?

    gunja203 February 12, 2020 7:11 pm Reply
  • Fantastic explanation. Very detailed and consise and very clear to understand. One of the best that I have seen so far on youtube. Keep up the exellent work.

    Joseph Rinaldi February 12, 2020 7:11 pm Reply
  • I have a question for you. If I only have resistors on the grounds can I light up all the LEDs at once or will it have to be scanned instead? do i choose the resistor based on 8 Leds in parallel or do i base the resistor on 1 led? For example if the grounds are on the columns and i try to light the whole column vs one led in that column. to light the whole column will i have to scan or can i just send power to all rows ? 8 leds would be on going thru one resistor..

    Daryl Seepersad February 12, 2020 7:11 pm Reply
  • Good mourning, please can I use this code in pic 16f877a

    idris ishola February 12, 2020 7:11 pm Reply
  • More tutorials my boss

    idris ishola February 12, 2020 7:11 pm Reply
  • Good tutor. More power to your elbow

    idris ishola February 12, 2020 7:11 pm Reply
  • excellent video, you make it easy to understand ! Your efforts are greatly appreciated – thank you!

    Fantastic Phone February 12, 2020 7:11 pm Reply
  • Your video was the only one that helped me understand this! Thank you for making this video.

    3DSage February 12, 2020 7:11 pm Reply
  • very good explanation! i understand now. but now i donthave idea how that led matrix can show running text. pls make video how to do running text use led matrix. i appreciate it. Thank you!

    Zulfan Priangga Fahmi February 12, 2020 7:11 pm Reply
  • is there a schematic available somewhre where to read how you connected the 595 with the row and col of the matrix?

    max things February 12, 2020 7:11 pm Reply
  • Thank you

    Somnath Bera February 12, 2020 7:11 pm Reply
  • wery good explanation thank you

    Владд Брат February 12, 2020 7:11 pm Reply
  • Nice video! There's one thing that I want to ask: can I control one single LED and let it blink, which is a pwm signal output by the register.

    Ham February 12, 2020 7:11 pm Reply

Leave a Reply

Your email address will not be published. Required fields are marked *