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Fade 1 image to show another.
Posted: Wed Apr 14, 2021 5:32 am
by AJB2K3
Hi, I planning a project that has two grayscale images placed one over the other.
Is there a way in micropython to have the top image fade from full visibility to 0 visibility making the bottom visable?
Or even only fade the pixels that are different colours?
Re: Fade 1 image to show another.
Posted: Wed Apr 14, 2021 9:25 am
by pythoncoder
You might be more likely to get a response if you told us what hardware you plan to use: display type and host device.
Re: Fade 1 image to show another.
Posted: Wed Apr 14, 2021 3:40 pm
by AJB2K3
sorry, I was planning to use a GC9A01 round screen with esp32 D0DQ6 esp32 pico d4 and RP2040.
GC9A01 display driver
Posted: Thu Apr 15, 2021 7:46 am
by pythoncoder
OK, so the question is whether anyone has written a MicroPython driver for the GC9A01 display. I'm not aware of one, and a forum search draws a blank. You may have to DIY. This usually involves porting Arduino C code to MicroPython, a task that requires familiarity with low level coding in both languages and being comfortable reading device datasheets.
Re: GC9A01 display driver
Posted: Thu Apr 15, 2021 3:39 pm
by AJB2K3
pythoncoder wrote: ↑Thu Apr 15, 2021 7:46 am
OK, so the question is whether anyone has written a MicroPython driver for the GC9A01 display. I'm not aware of one, and a forum search draws a blank. You may have to DIY. This usually involves porting Arduino C code to MicroPython, a task that requires familiarity with low level coding in both languages and being comfortable reading device datasheets.
That is going to be the hard part but I was wondering if there was a generic graphical routine for the fade effect.
I have an idea on how to do it but it will be slow and memory intensive.
Re: GC9A01 display driver
Posted: Thu Apr 15, 2021 3:46 pm
by scruss
pythoncoder wrote: ↑Thu Apr 15, 2021 7:46 am
OK, so the question is whether anyone has written a MicroPython driver for the GC9A01 display.
There isn't one, but there is for CircuitPython. Tod Kurt (@todbot) suggested it's very similar to other displays, except it has a custom init code:
https://github.com/tylercrumpton/Circui ... /gc9a01.py
Re: GC9A01 display driver
Posted: Thu Apr 15, 2021 5:36 pm
by AJB2K3
scruss wrote: ↑Thu Apr 15, 2021 3:46 pm
pythoncoder wrote: ↑Thu Apr 15, 2021 7:46 am
OK, so the question is whether anyone has written a MicroPython driver for the GC9A01 display.
There isn't one, but there is for CircuitPython. Tod Kurt (@todbot) suggested it's very similar to other displays, except it has a custom init code:
https://github.com/tylercrumpton/Circui ... /gc9a01.py
Todbot?
And here I thought he was an actual bot!
Thanks for the link!
Re: Fade 1 image to show another.
Posted: Thu Apr 22, 2021 8:21 pm
by russ_h
I'm working on a driver for the GC9A01 display. The driver is working
with this display on a Raspberry Pi PICO. After a little more testing I'll try it with the ESP32. I should have something up on GitHub this weekend.
- IMG_4225.jpg (32.07 KiB) Viewed 6924 times
Re: Fade 1 image to show another.
Posted: Fri Apr 23, 2021 5:55 am
by pythoncoder
I love that watch display with all its detail - even shadows under the hands. I know just how much work it takes to produce a display as pretty as that.
Re: Fade 1 image to show another.
Posted: Fri Apr 23, 2021 2:57 pm
by russ_h
Pictures don’t do it justice, it looks even better in person.
- 9CC2A3EF-A5F3-420C-AEC2-371883B9A78C.jpeg (81.54 KiB) Viewed 6892 times