0

16x16 DotStar maximum SPI rate
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

Re: 16x16 DotStar maximum SPI rate

by adafruit2 on Tue Jan 08, 2019 1:44 pm

the max is not guaranteed, it depends on the chips, quantity power supply, wire length...you really just have to try it and see how fast you can drive the leds you have :)

adafruit2
Site Admin
 
Posts: 18429
Joined: Fri Mar 11, 2005 7:36 pm

Re: 16x16 DotStar maximum SPI rate

by bobgardner on Sun May 05, 2019 5:48 pm

kla_kretzsche wrote:Furthermore, can someone explain why the maximum data rate is 8MHz on Arduino and up to 32MHz on Raspberry Pi?.


Arduino clock is 16mhz, mega328 datasheet shows max spi rate is clock over 2 with double speed bit on.

bobgardner
 
Posts: 28
Joined: Fri Mar 08, 2013 8:35 pm

Please be positive and constructive with your questions and comments.