stefonalfaro wrote: ↑Sat Jun 23, 2018 6:01 pmHi, I have a project where I need to control 60LEDs, 60buttons, and 60LCD displays.
I know I am going to need at least 120 GPIO if not more for the LCD display requirements. What would be the best way to expand the current set of the Raspberry Pi 3?
When using addressable led's (WS28xx), then you just need one SPI MOSI pin.
Interesting that is good to know I can connecting multiple Raspberry Pi's to a central computer or even maybe a central Raspberry Pi.
Okay that makes sense so I would learn how to do an 8x8 input matrix for 64 buttons.Arjan wrote: ↑Sat Jun 23, 2018 8:31 pmWhen using addressable led's (WS28xx), then you just need on SPI MOSI pin.
The 60 buttons can be configured in a matrix; scanning principle. Less GPIO's needed.
Are the LCD display's controller with SPI, I2C?
At any time a I2C or SPI I/O expander can do a good job.
Yep missed it completely.Yes I posted that above, but as you missed reading that response here is the GPIO Expander link:
Gavinmc42 wrote: ↑Sun Jun 24, 2018 5:20 amYep missed it completely.Yes I posted that above, but as you missed reading that response here is the GPIO Expander link:
How big is the image that get loaded onto the Zero?
I have been using Ultibo on USB Zero's for Graphics coding.
But it is getting to be useful for other stuff.
https://ultibo.org/forum/viewtopic.php? ... vity#p7221