Search found 524 matches

by moosepr
Thu Feb 02, 2017 2:36 am
Forum: Guides
Topic: [Guide] ili9341 SPI TFT Screen on Retropie
Replies: 265
Views: 440604

Re: [Guide] ili9341 SPI TFT Screen on Retropie

I 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!) http://i.imgur.com/jLqfLqH.jpg so i had a bit more of a pl...
by moosepr
Wed Feb 01, 2017 12:07 pm
Forum: Guides
Topic: [Guide] ili9341 SPI TFT Screen on Retropie
Replies: 265
Views: 440604

Re: [Guide] ili9341 SPI TFT Screen on Retropie

but I just think if I CAN do direct drive RGB 565, why shouldn't I ;) That's as good a reason as any! ;) I think some SPI screens suffer at higher resolutions. a 320x480 screens have many more pixels than a 240x320 screen, and so of course will be slower. I will have to get some video recorded on m...
by moosepr
Wed Feb 01, 2017 9:34 am
Forum: Guides
Topic: [Guide] ili9341 SPI TFT Screen on Retropie
Replies: 265
Views: 440604

Re: [Guide] ili9341 SPI TFT Screen on Retropie

if you specifically don't want to mess with the PWM from the Pi for backlight, you *COULD* use a 555 timer circuit to control the backlight as an external PWM. bonus is you can use a pot to adjust the resistance which controls the mark/space ratio (the thing that would actually make it brighter or ...
by moosepr
Wed Feb 01, 2017 6:15 am
Forum: Guides
Topic: [Guide] ili9341 SPI TFT Screen on Retropie
Replies: 265
Views: 440604

Re: [Guide] ili9341 SPI TFT Screen on Retropie

I just wasn't sure as I only follow the guides, from the pinout images I have seen (many of them) there are 2 PWM1 pins (GPIO 13 and 19 physical pins 33 and 35) and only 1 PWM0 (GPIO 18 physical pin 12) as this screen method will save space it's a shame to take up the gained space by using a USB DA...
by moosepr
Wed Feb 01, 2017 4:12 am
Forum: Guides
Topic: [Guide] ili9341 SPI TFT Screen on Retropie
Replies: 265
Views: 440604

Re: [Guide] ili9341 SPI TFT Screen on Retropie

Can PWM audio still be used with these screens? I do like the screen/Pi Zero combo PCB so much space saved :D PWM Audio can be used out of the other pwm pin as combined Stereo on 1 pin. Also aren't there 2 PWM1 or PWM0 pins? So theoretically 3 PWM pins? You can use the ALT5 pin confiuration to get ...
by moosepr
Wed Feb 01, 2017 2:34 am
Forum: Guides
Topic: [Guide] ili9341 SPI TFT Screen on Retropie
Replies: 265
Views: 440604

Re: [Guide] ili9341 SPI TFT Screen on Retropie

Can PWM audio still be used with these screens? I do like the screen/Pi Zero combo PCB so much space saved :D by default my guide uses GPIO18 for the backlight. this is mainly because it can do pwm and let you adjust the backlight brightness. This would interfere with the PWM audio, but in the comm...
by moosepr
Wed Feb 01, 2017 2:11 am
Forum: Guides
Topic: [Guide] ili9341 SPI TFT Screen on Retropie
Replies: 265
Views: 440604

Re: [Guide] ili9341 SPI TFT Screen on Retropie

That is my whole reason to be looking into these screens to be honest and I'm well aware of those files but thanks for the links. I plan to make some changes to his choices of components for power and charging but I wanted to look into screen possibilities that are not 3.5 inch but more like 3.2inc...
by moosepr
Tue Jan 31, 2017 3:56 pm
Forum: Guides
Topic: [Guide] ili9341 SPI TFT Screen on Retropie
Replies: 265
Views: 440604

Re: [Guide] ili9341 SPI TFT Screen on Retropie

Do you have any recommendations? also do you need anything else to make these screens work? I'm trying to find schematics of those boards that come with the screens but there seem to be many variants of the same thing. Do you use a voltage regulator for the screen and backlight? These are the only ...
by moosepr
Tue Jan 31, 2017 3:01 pm
Forum: Guides
Topic: [Guide] ili9341 SPI TFT Screen on Retropie
Replies: 265
Views: 440604

Re: [Guide] ili9341 SPI TFT Screen on Retropie

Nice! I was looking into testing some of these screens, so in the initial start of the guide you have the Pi connected to an HDMI monitor? Yeah I started with an Motorola atrix lapdock (screen and keyboard in a laptop form factor with USB and HDMI) you can in theory use it as a second screen displa...
by moosepr
Tue Jan 31, 2017 2:34 pm
Forum: Guides
Topic: [Guide] ili9341 SPI TFT Screen on Retropie
Replies: 265
Views: 440604

Re: [Guide] ili9341 SPI TFT Screen on Retropie

Thanks for the info! :D Looking to put one of these(the 2.8" version) to use in a GBA build. Do you know where exactly I can chop the PCB to cut down the size of it? Maybe a picture with some black lines to get an idea? Thank you! Basically you can prise up the screen, they are stuck down with doub...