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Forum Index : Microcontroller and PC projects : Help please - Picomite with SPI LCD
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matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 8567 |
AFAIK there are no 3.2" ili9341 - try ILI9488. |
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cosmic frog Senior Member Joined: 09/02/2012 Location: United KingdomPosts: 278 |
Could this just be a case of a weak power supply/USB cable? Dave. |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 5705 |
I've seen the 3.2" ILI9341 advertised for a long time. It's still 320x240 though, you don't get any extra pixels. I must admit that I've never actually seen one in real life though - it may be just markings and measurements! If the display is fed from the 5V line it should be ok. I've often run PicoMite / LCD combinations from all sorts of USB ports & cables. They are pretty forgiving. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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phil99 Guru Joined: 11/02/2018 Location: AustraliaPosts: 1773 |
3.2" ILI9341 320x240 do exist, there is one in front of me now. I have a 33 ohm resistor to +5V for the backlight LED, haven't tried PWM on it yet. If using PWM start with 50% and something should be visible. In the photo the LED is a grey wire but does not go to the breadboard. What is it connected to? Edited 2022-02-02 22:00 by phil99 |
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Glen0 Regular Member Joined: 12/10/2014 Location: New ZealandPosts: 77 |
WORKING AT LAST Big thanks for all your contributions. In the end it was as Peter said, ILI9488 I will be writing this in bold permanent ink on the back of each display. I suppose it's easy for the seller to make the mistake of typing the wrong controller number in the description. I am once again reminded to keep an open mind when faced with such issues. Luckily the display and Pico can tolerate/survive having 5V shoved down their throats. It appears to work with or without the MISO pin connected. (Grey wire in the photo) I have the LED pin connected directly to "VSYS". (3.3V or 100% duty cycle) Now to get Touch and SD working.. Edited 2022-02-03 06:30 by Glen0 |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 5705 |
Excellent news! :) Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 8567 |
To get touch and SD working you must disconnect MISO or connect it via a 680 ohm resistor |
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Glen0 Regular Member Joined: 12/10/2014 Location: New ZealandPosts: 77 |
Will do thanks |
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