Make LED matrix array using a single microcontroller
Make LED matrix array using a single microcontroller
Circuit diagram for a moving LED matrix display.
Re: Make LED matrix array using a single microcontroller
Can I use this for a large matrix display (like 16*64) ?Shane wrote:Circuit diagram for a moving LED matrix display.
Will it show good outputs?
Re: Make LED matrix array using a single microcontroller
Think about it as this. You TV refreshes the display 25 times per second. With two fields, it is like 50 fields per second.
With a microcontroller, How fast you think you can refresh these LED displays ? That's how this scanning method work. Though it can be logically thought as drawing to one display at a time, due its speed, no one will notice that. This is the common method used. Good luck and keep us updated.
With a microcontroller, How fast you think you can refresh these LED displays ? That's how this scanning method work. Though it can be logically thought as drawing to one display at a time, due its speed, no one will notice that. This is the common method used. Good luck and keep us updated.
Re: Make LED matrix array using a single microcontroller
Thank you, I'll try to see it practically.Shane wrote:Think about it as this. You TV refreshes the display 25 times per second. With two fields, it is like 50 fields per second.
With a microcontroller, How fast you think you can refresh these LED displays ? That's how this scanning method work. Though it can be logically thought as drawing to one display at a time, due its speed, no one will notice that. This is the common method used. Good luck and keep us updated.
Re: Make LED matrix array using a single microcontroller
Writing firmware for this.....
If you can understand the basic operation of a latch and shift register, it is easy to write the firmware by yourself. 74HC259 is a latch and 74HC595 is a shift register. If you want to become a good electronic engineer, it is a must to learn how to read a datasheet carefully and understand.
Here are the datasheets.
http://www.nxp.com/documents/data_sheet/74HC_HCT259.pdf
http://www.nxp.com/documents/data_sheet/74HC_HCT595.pdf
If you can understand the basic operation of a latch and shift register, it is easy to write the firmware by yourself. 74HC259 is a latch and 74HC595 is a shift register. If you want to become a good electronic engineer, it is a must to learn how to read a datasheet carefully and understand.
Here are the datasheets.
http://www.nxp.com/documents/data_sheet/74HC_HCT259.pdf
http://www.nxp.com/documents/data_sheet/74HC_HCT595.pdf
- chanakalin
- Posts: 2
- Joined: Mon Jan 04, 2010 8:45 am
- Location: Kegalle
Re: Make LED matrix array using a single microcontroller
74HC595 datasheet is not clear to beginners. arduino.cc/en/Tutorial/ShiftOut helps me to understand it.
It says "Your account does not have permission to post links or domain/page references." while adding the link
It says "Your account does not have permission to post links or domain/page references." while adding the link