[sdiy] Fast lcd display like digitakt

Benjamin Tremblay btremblay at me.com
Sun Jun 16 04:36:11 CEST 2024


Nope, I made an error. Wasn’t really using spi. Now it runs better. 
I do think I want to find a larger monochrome display.
Benjamin Tremblay

> On Jun 15, 2024, at 8:54 PM, Benjamin Tremblay <btremblay at me.com> wrote:
> 
> I’ve been working on some virtual synth code, and also learning how to send nrpn midi messages. It’s all going well but for midi controller and synth projects I envision a paged Oled display with virtual knob animation and maybe a touchscreen.
> What kind of hardware do I need for this? I purchased 2” and 3” displays from Amazon and tried out sample code on an arduino mega and then ran it on a Teensy LC.  I have a teensy 4 and a pico and some Stm32F401 boards.
> I am using the Adafruit gfx library and so far using an offscreen canvas is too slow.
> Should I use a 1-bit display? Repainting the screens is sluggish; maybe 2fps max. Should I use a faster SPI implementation? I know teensy LC is slow. Should I use another graphics library?
> I’m going to assume displays are nice for things like waveform editing and such. I have seen some fast oscilloscope demos on Oled displays.
> Hm.
> 
> Benjamin Tremblay
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