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Forum Index : Microcontroller and PC projects : Best display yet?
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| matherp Guru  Joined: 11/12/2012 Location: United KingdomPosts: 10158 |
 This display is available from buydisplay.com It is a bright 4" IPS 320x320 display with 80 degree viewing angles. It uses the ST7796S controller and I will include support for this display in the 6.00.02 release OPTION LCDPANEL ST7796SP, orientation, CDpin, RESETpin, CSpin,,INVERT. As shown the display is in portrait mode which benefits from H/W scrolling. Connection is a bit trickier than the standard "packaged" displays as it needs a FFC breakout (40-pin, 0.5mm pitch) and a boost converter to generate 15V for the backlight but it is ideal for building into any sort of device. Wiring is: pins 1,3,6,12,18: GND pin 2: +15V pins 4,5,13,14,15: 3V3 pin 10: SPI-CLK pin 17: SPI-MOSI pin 16: SPI-MISO pin 9: CD pin 7: RESET pin 8: CS Edited 2025-06-08 22:26 by matherp |
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| dddns Guru Joined: 20/09/2024 Location: GermanyPosts: 450 |
For many applications well suited but not for editing text as with every 320 display. IPS is nice. I think this is a start of new generation displays. Seen this? |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10158 |
Editing is now pretty OK with continuation lines. The display is as wide as a typical phone and bright and clear. Font 7 gives 53 characters across the screen. |
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| mozzie Senior Member  Joined: 15/06/2020 Location: AustraliaPosts: 131 |
G'day, That is a nice looking diaplay, and the specs suggest it would be close to daylight readable  Would you be able to read font 7 in the editor with less than perfect (think 50 year old / needs reading glasses / has done a fair amount of welding over the years) eyesight, whilst editing a program? Might have to get one to try out.  Regards, Lyle. |
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| PhenixRising Guru Joined: 07/11/2023 Location: United KingdomPosts: 1278 |
Responding to the title: Nope  The best display is a 10" Android device for £60. Doesn't require a bezel Has lots of memory WiFi Bluetooth GPU Sound Cameras Speed Processing power Capacitive touchscreen (the most resilient) And can be programmed with a BASIC interpreter just as easily as MMBASIC. Sorry, couldn't resist. Your display dies and now what? With an android device, simply run the app on your phone, etc. |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10158 |
My 71 year old / needs reading glasses / has done a fair amount of welding over the years) eyesight, work fine with this display while editing a program |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7735 |
GPIO pins = 0 - try handling interrupts over anything wireless. HDMI display = 0 - screen size is smaller than most old VGA monitors. Ability to run console and graphic screens simultaneously - no. I rest my case, m'lud. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| PhenixRising Guru Joined: 07/11/2023 Location: United KingdomPosts: 1278 |
Comm's support interrupts You can have whatever screen size you want Graphics and console? RFO Basic has _ALWAYS_ supported both simultaneously. PRINT goes to console display, graphic text goes to graphics display. Your case is far from rested. But neither of you responded to the most important question: Tonight your HMI dies. How long before you are back in action? Android devices are ubiquitous. THE MOST POWERFUL AND UBIQUITOUS HMI EVER CREATED....IS IN YOUR POCKET. I rest my case |
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| PhenixRising Guru Joined: 07/11/2023 Location: United KingdomPosts: 1278 |
I recently showed my tablet on a factory floor, ten years and it's caked in oil and metal chips. Looks and performs like new. The next machine over has a £5,000 Siemens panel, only one year older. The buttons are flaky and their mouse emulator is dead. So this "industrial" control panel now has a desktop keyboard and mouse plugged in the back so they can actually use it. I just LMAO |
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| PhenixRising Guru Joined: 07/11/2023 Location: United KingdomPosts: 1278 |
 This what I get: "Industrial Control by Beckhoff" Except the HMI is dead and now needs a PC monitor and keyboard. This is everywhere and the "yes men": "Oh but it's worth the £5,000 because it's industrial" Total BS. Machines need to be making parts. Downtime is not an option. |
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| PhenixRising Guru Joined: 07/11/2023 Location: United KingdomPosts: 1278 |
And BTW:The Siemens system? They want it ripped out because nobody supports it. Machine builder: "Yeah it's fooked. You need to buy a new one for $500K" Me: "It'll be better than new for $40K and open source" |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7735 |
Not that easy, finding a 32" tablet running RFO BASIC... They get a bit bulky and not at all briefcase size. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| PhenixRising Guru Joined: 07/11/2023 Location: United KingdomPosts: 1278 |
How big is Pete's display again? No. In this day and age, it makes no sense to have a garbage low res display. Society is accustomed to phone resolution, who the hell wants blocky graphics. We need things that work and the HMI is the biggest reason for failure. If you were a plant manager, you would understand...it's my every day. |
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| dddns Guru Joined: 20/09/2024 Location: GermanyPosts: 450 |
I agree and that's why I think acceptance can only be achieved with a higher density. I would use a 4 or 5 inch and 800x480 IPS display. |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10158 |
Those displays are already supported but for many uses there is simply too much data needs chucking around to be usefully usable (games) |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7735 |
HMI displays and gaming displays are totally different. They have different requirements. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| mozzie Senior Member Joined: 15/06/2020 Location: AustraliaPosts: 131 |
G'day all, I guess the real problem here is the number of different use cases for the Picomite: Phenix's use case is industrial HMI, the customer is happy to pay for an Android tablet which is still going to be far cheaper than a replacement HMI. The Gaming fraternity seem to want fast and colorful. Others are happy with the HDMI (or VGA) on a TV or monitor. Some more with a tiny LCD or OLED for portable use / battery operation. I just like to tinker, however I would like to mount something in a vehicle so need daylight readable / wide viewing angles and around 5/7/10" so can be read from arms length. (And as much I/O as possible) Its a pretty big ask from a $7 micro controller  Regards, Lyle. |
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