HDMI output example

[adafruit]

HDMI output example

[yratof]

Investigating further, there's a limit to the screen size that this script will output — if we force the Framebuffer to be a 4th of the resolution, it can be forced to display

[jackjt8]

@yratof I'm getting the same issue when trying to run the script on a 320x240 composite display (framebuffer to match). What framebuffer size did you use?

[isabellachow]

@yratof @jackjt8 i'm trying to force hdmi monitor display for art installation! if y'all have any advice, would be greatly appreciated.

[yratof]

@jackjt8 I've been using a square resolution, just so it doesn't stretch and it outputs fine.

@isabellachow What solved the HDMI out issue for me was simply removing this line:

os.putenv('SDL_FBDEV', '/dev/fb1')

Without it, it defaults to whatever screen is available is seems

[isabellachow]

thankyou! worked a treat.

is there a way to make it stretch across display, even if it distorts?

[yratof]

@isabellachow I think you could play around with this part:

  displayPixelWidth = width / 30
  displayPixelHeight = height / 30

[jackjt8]

@yratof What framebuffer are you referring to? I haven't modified any of the code with the exception of commenting out the os.env line. The framebuffer in question would be the one you have set in /boot/config.txt or it might be tied to the monitor resolution. From what I was able to gather, it seems Pygame doesn't support framebuffers below 640x480 and base upon your first two comments it does seem that Pygame has an upper limit; I can't test it right now, but... if you can provide at least that resolution it'll be a big help.

@yratof @isabellachow That would only alter the displayPixels. I would recommend that you change the width and height first as that'll affect both the displayPixelss and pygame.display.set_mode(). When the lcd.fill() occurs, ie the solid colour after starting the script, you should be able to see the area that pygame.display.set_mode can draw to. Removing the / 30 will then let to get a 1:1 between the displayPixels and the screens width/height, ie as much screen fill as lcd.fill() shows. If you using a width/height of 1280x720 (or equivalent 16 by 9) and you want a square draw, you can use displayPixelWidth = width / (16/9).

Pygame won't have an issue with doing this, can't say the same about Adafruit's examples.

[yratof]

I'm running at 320x240 on my handheld Thermal cam now – @jackjt8 I would try to run this easy installer if you've got a similar screen: https://learn.adafruit.com/adafruit-2-2-pitft-hat-320-240-primary-display-for-raspberry-pi/easy-install

[jackjt8]

As I said In my original post, I'm running a 320x240 composite display (with a 640x480 config.txt framebuffer per my previous reply).

[isabellachow]

hmm i gave it a go - if i simply change width/height, it gave me 'segmentation error'. if i also changed displaypixels, then i got 'no video mode large enough'

[ladyada]

hiya we're archiving this repo because we've moved to only using the circuitpython version of this library. it works great on raspi & the example code has been adapted as well!
https://github.com/adafruit/Adafruit_CircuitPython_AMG88xx

to keep this repo from getting used now that its deprecated, we'll be closing all issues and archiving. please feel free to open a new issue at https://github.com/adafruit/Adafruit_CircuitPython_AMG88xx - any pull req's will also be welcome there

thanks!!