Hmmm, sounds Like there may be something amiss. Do you have a photo of the wiring?Mischief wrote: ↑Fri Apr 14, 2017 3:05 amReceived my screen and been having a play (http://r.ebay.com/l2Fp3J) not sure what I did wrong but I don't get any splash screen and the backlight is very dim, just wondered if the screen may be defective or I actually did something wrong.
Cheers
[Guide] ili9341 SPI TFT Screen on Retropie
- moosepr
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Re: [Guide] ili9341 SPI TFT Screen on Retropie
Get a small cheep LCD in your project https://www.sudomod.com/forum/viewtopic.php?f=22&t=2312
Wrap it all round a battery https://www.sudomod.com/forum/viewtopic.php?f=13&t=2292
Or use a custom PCB to make it really small https://www.sudomod.com/forum/viewtopic.php?f=13&t=2512
or make it really really really really tiny!! https://www.sudomod.com/forum/viewtopic.php?f=13&t=2919
Wrap it all round a battery https://www.sudomod.com/forum/viewtopic.php?f=13&t=2292
Or use a custom PCB to make it really small https://www.sudomod.com/forum/viewtopic.php?f=13&t=2512
or make it really really really really tiny!! https://www.sudomod.com/forum/viewtopic.php?f=13&t=2919
- Mischief
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Re: [Guide] ili9341 SPI TFT Screen on Retropie
Not at the moment I de soldered it so I could try again just in case I did it wrong, I made the wires short (under 2 inches) in case of interference, I will be trying again later.moosepr wrote: ↑Fri Apr 14, 2017 9:37 amHmmm, sounds Like there may be something amiss. Do you have a photo of the wiring?Mischief wrote: ↑Fri Apr 14, 2017 3:05 amReceived my screen and been having a play (http://r.ebay.com/l2Fp3J) not sure what I did wrong but I don't get any splash screen and the backlight is very dim, just wondered if the screen may be defective or I actually did something wrong.
Cheers
Cheers
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Re: [Guide] ili9341 SPI TFT Screen on Retropie
Hey all. I tried using this screen but all I was able to get working was the backlight. It looks like the same one from the post before mine. https://www.ebay.com/itm/181925106447
Any help would be very appreciated!!!
Any help would be very appreciated!!!
- moosepr
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Re: [Guide] ili9341 SPI TFT Screen on Retropie
No worries, first off, have you got any photos of the wires? Let's see if there is anything thereusername 123 wrote: ↑Tue Apr 25, 2017 12:22 pmHey all. I tried using this screen but all I was able to get working was the backlight. It looks like the same one from the post before mine. https://www.ebay.com/itm/181925106447
Any help would be very appreciated!!!
Get a small cheep LCD in your project https://www.sudomod.com/forum/viewtopic.php?f=22&t=2312
Wrap it all round a battery https://www.sudomod.com/forum/viewtopic.php?f=13&t=2292
Or use a custom PCB to make it really small https://www.sudomod.com/forum/viewtopic.php?f=13&t=2512
or make it really really really really tiny!! https://www.sudomod.com/forum/viewtopic.php?f=13&t=2919
Wrap it all round a battery https://www.sudomod.com/forum/viewtopic.php?f=13&t=2292
Or use a custom PCB to make it really small https://www.sudomod.com/forum/viewtopic.php?f=13&t=2512
or make it really really really really tiny!! https://www.sudomod.com/forum/viewtopic.php?f=13&t=2919
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Re: [Guide] ili9341 SPI TFT Screen on Retropie
Thanks for your reply but I figured out my issue. I mixed up the gpio numbers with the physical pins. I got it working now!!!moosepr wrote: ↑Tue Apr 25, 2017 2:04 pmNo worries, first off, have you got any photos of the wires? Let's see if there is anything thereusername 123 wrote: ↑Tue Apr 25, 2017 12:22 pmHey all. I tried using this screen but all I was able to get working was the backlight. It looks like the same one from the post before mine. https://www.ebay.com/itm/181925106447
Any help would be very appreciated!!!
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Re: [Guide] ili9341 SPI TFT Screen on Retropie
One other thing, I assume we need the pi zero hooked up to the internet for this to work??
- moosepr
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Re: [Guide] ili9341 SPI TFT Screen on Retropie
You need to internet to download the fbcp files which let you 'clone' your display onto the TFT.username 123 wrote: ↑Tue Apr 25, 2017 4:11 pmOne other thing, I assume we need the pi zero hooked up to the internet for this to work??
Get a small cheep LCD in your project https://www.sudomod.com/forum/viewtopic.php?f=22&t=2312
Wrap it all round a battery https://www.sudomod.com/forum/viewtopic.php?f=13&t=2292
Or use a custom PCB to make it really small https://www.sudomod.com/forum/viewtopic.php?f=13&t=2512
or make it really really really really tiny!! https://www.sudomod.com/forum/viewtopic.php?f=13&t=2919
Wrap it all round a battery https://www.sudomod.com/forum/viewtopic.php?f=13&t=2292
Or use a custom PCB to make it really small https://www.sudomod.com/forum/viewtopic.php?f=13&t=2512
or make it really really really really tiny!! https://www.sudomod.com/forum/viewtopic.php?f=13&t=2919
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Re: [Guide] ili9341 SPI TFT Screen on Retropie
Ok. I just got that to work as well. Thanks.
As far as making the screen faster. Do I just change the "speed=16000000" value? I put it up to 90000000 but don't change all that much.
As far as making the screen faster. Do I just change the "speed=16000000" value? I put it up to 90000000 but don't change all that much.
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Re: [Guide] ili9341 SPI TFT Screen on Retropie
Isn't that fps just reflecting what's coming out of the hdmi? Since the ili9341 is only displaying a copy of the hdmi.moosepr wrote: ↑Thu Feb 02, 2017 2:36 amI was having a bit of a play with speeds last night, managed to get it all the way up to 90000000 (7 zeros) and a stable screen. Turning on the FPS indicator in the emulationstation UI settings gave me a nice surprise (if you can read that!)
so i had a bit more of a play, up to 100000000 (8 zeros) and that was a bit too fast!!
Isn't that fps just reflecting what's coming out of the hdmi? Since the ili9341 is only displaying a copy of the hdmi.
although the actual screen does flicker up, so maybe with shorter cables, it might work
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Re: [Guide] ili9341 SPI TFT Screen on Retropie
Well i think it is linked to how fast the pi can draw the screen. I tried it on another pi connected to just a 720p screen, and it was flicking round 45fps!! there is a debug mode on the fbtft system which can give you true readings, but i have not really played with that. it is fast enough for me https://www.youtube.com/watch?v=nE0DtXGXHAw
the speed in the conf file will tell the pi how fast to send the commands to the tft, so the higher that can go, the faster we can refresh the screen, but then there is a limit as i mentioned. anything below 100000000 (8 zeros) seems to be ok, but your experiences may vary.
there is also the fps option in the conf file which is purely for the fbtft system to decide how long to wait before trying to update the screen. I normally set that to 60, but if it actually hits 60fps is just a guess really. Still looks ok to me!!
the speed in the conf file will tell the pi how fast to send the commands to the tft, so the higher that can go, the faster we can refresh the screen, but then there is a limit as i mentioned. anything below 100000000 (8 zeros) seems to be ok, but your experiences may vary.
there is also the fps option in the conf file which is purely for the fbtft system to decide how long to wait before trying to update the screen. I normally set that to 60, but if it actually hits 60fps is just a guess really. Still looks ok to me!!
Get a small cheep LCD in your project https://www.sudomod.com/forum/viewtopic.php?f=22&t=2312
Wrap it all round a battery https://www.sudomod.com/forum/viewtopic.php?f=13&t=2292
Or use a custom PCB to make it really small https://www.sudomod.com/forum/viewtopic.php?f=13&t=2512
or make it really really really really tiny!! https://www.sudomod.com/forum/viewtopic.php?f=13&t=2919
Wrap it all round a battery https://www.sudomod.com/forum/viewtopic.php?f=13&t=2292
Or use a custom PCB to make it really small https://www.sudomod.com/forum/viewtopic.php?f=13&t=2512
or make it really really really really tiny!! https://www.sudomod.com/forum/viewtopic.php?f=13&t=2919
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