MAX7219 display driver

[pasicr]

Hi,
If somebody use this display driver, please tell me,
how do you implementing maximum intensity for display (LED diode for example),
regards

 

[Pld4me]

There are two ways to control intensity with this driver.

If you look at the datasheet, it mentions the external resistor for intensity control (analog) or you can load a hex value into the intensity register (digital) to vary the brightness.

Hope this helps,

Pld4me

 

[wizpic]

I've used it in PICbasic and it's controlled by the software, I used the eight and done a volt/amp meter using the max7219

but look at the data sheet you will find everything there you need to know about the litlle chappy

wizpic

 

[electronicus]

go here: http://www.woe.onlinehome.de/proj_gif/ledmodul.gif

 

[pasicr]

Hi electronicus,
on this schematic R1 is 22K, can you tell me why this exactly value,
if I decrese this value on 10K for example, will I get the biger intensity of LED light.
regards

 

[electronicus]

Hi electronicus,
on this schematic R1 is 22K, can you tell me why this exactly value,
if I decrese this value on 10K for example, will I get the biger intensity of LED light.
regards

Here are the MAX7219, Data Sheet. Go too pag. 11