adafruit accessories 5.0 40 pin 800x480 tft display without touchscreen free sam

That new Raspberry Pi 400 computer you just got has a row of 2x20 pin headers on the right side - those are the GPIO (general purpose input/output) pins, and for those of us who like to hack electronics, they are where the real fun lies. By programming the Pi, you can twiddle those pins high or low, send and receive I2C and SPI data, and access the 3V and 5V power rails.

Unlike the "classic" Raspberry Pi computers, you can"t really stick a HAT, bonnet, pHAT or other accessory/add-on on top...what to do? Give up!? NO! Use this cable, which will act as an extender for all 40 pins to give you a streeeeetch of about 150mm / 6 inches. Simply plug the socket side into the Raspberry Pi with the white mark next to the Pin 1 label. Then on the other side, plug the hat down onto the plug side.

HyperPixel 4.0 is the perfect way to use your Pi without a bunch of cables or a bulky display. Design your own interface to control your project, display data, or turn your Pi into a tiny media centre.

This new version of HyperPixel has a gorgeous IPS display, with wide viewing angles, custom-made cover glass (on the touch version), and the alternate I2C interface is broken out for advanced users.

Note that the images of the displays on this page have not been Photoshopped. That"s the Raspberry Pi OS desktop with our HyperPixel wallpaper on! (click here to download our HyperPixel wallpaper)

HyperPixel uses a high-speed DPI interface, allowing it to shift 5x more pixel data than the usual SPI interface that these small Pi displays use. It has a 60 FPS frame rate and a resolution of approximately 235 pixels per inch (800x480) on its 4.0" display. The display can show 18-bits of colour (262,144 colours).

The Touch version has a capacitive touch display that"s more sensitive and responsive to touch than a resistive touch display, and it"s capable of multi-touch!

Everything comes fully-assembled, and there"s no soldering required! The display is securely stuck down to the HyperPixel 4.0 PCB and connected via a neat little flush-mounting FPC cable. Just pop HyperPixel 4.0 on your Pi and run our installer to get everything set up!

Please note: when installing HyperPixel 4.0 onto your Pi make sure not to press down on the screen surface! Hold the board by its edges and wiggle it to mate with the extended header (or GPIO header). Also take care not to pull on the edges of the glass display when removing your HyperPixel.

It"ll work with any 40-pin version of the Pi, including Pi Zero and Pi Zero W. If you"re using it with a larger Pi then use the extra 40-pin header that"s included to boost it up to the required height. If you"re using a Zero or Zero W then just pop it straight onto the GPIO.

Raspberry Pi OS Bullseye includes major changes to how DPI display drivers work. If you"re using an image dated 04/04/2022 or later, it will come with Hyperpixel drivers baked in and you don"t need to run the installer. You can set up display and touch by adding a few lines to your boot/config.txt:

If you"re using Raspberry Pi OS Buster/Legacy (or an earlier version), you can use our one-line-installer to configure your Pi properly for HyperPixel 4.0 and to enable the touch screen on the touch version. Note that you"ll need another display, keyboard, and mouse to install the software, or you could do it remotely over SSH if you follow our guide on how to set your Pi up headlessly.

HyperPixel uses basically all of the GPIO pins to communicate with the Pi (including the standard I2C pins) so it"s not generally possible to use it with other HATs and devices that connect via the GPIO...

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ER-TFT050-3 is 800x480 dots 5" color tft lcd module display with ILI6122 driver IC,optional 5 points capacitive multi-touch panel with controller GSL1680 and optional 4-wire resistive touch panel screen,superior display quality,super wide view angle and easily controlled by MCU such as 8051, PIC, AVR, ARDUINO, ARM and Raspberry PI.

It can be used in any embedded systems,car,mp4,gps,industrial device,security and hand-held equipment which requires display in high quality and colorful image.It supports rgb interface. FPC with zif connector is easily to assemble or remove.

Have you gazed longingly at large TFT displays - you know what I"m talking about here, 4", 5" or 7" TFTs with up to 800x480 pixels. Then you look at your Arduino. You love your Arduino (you really do!) but there"s no way it can control a display like that, one that requires 60Hz refresh and 4 MHz pixel clocking. Heck, it doesn"t even have enough pins. I suppose you could move to ARM core processors with TTL display drivers built in but you"ve already got all these shields working and anyways you like small micros you"ve got.

What if I told you there was a driver chip that could fulfill those longings? A chip that can control up 800x480 displays, and heck, a resistive touchscreen as well. All you need to give up is 5 or so SPI pins. Would you even believe me? Well, sit down because this product may shock you.

The RA8875 is a powerful TFT driver chip. It is a perfect match for any chip that wants to draw on a big TFT screen but doesn"t quite have the oomph (whether it be hardware or speed). Inside is 768KB of RAM, so it can buffer the display (and depending on the screen size also have double overlaying). The interface is SPI with a very basic register read/write method of communication (no strange and convoluted packets). The chip has a range of hardware-accelerated shapes such as lines, rectangles, triangles, ellipses, built in and round-rects. There is also a built in English/European font set (see the datasheet section 7-4-1 for the font table) This makes it possible to draw fast even over SPI.

The RA8875 can also handle standard 4-wire resistive touchscreens over the same SPI interface to save you pins. There"s an IRQ pin that you can use to help manage touch interrupts.

On the PCB we have the main chip, level shifting so you can use safely with 3-5V logic. There is also a 3V regulator to provide clean power to the chip and the display. For the backlight, we put a constant-current booster that can provide 25mA or 50mA at up to 24V. The connector to the screen is a classic "40 pin" connector. All the 40-pin TFT"s in the Adafruit shop are known to work well. There are other 40-pin displays that have different pinouts or backlight management and these may not work - they may even damage the driver or TFT if the boost converter pushes 24V into the display logic pins! For that reason, we only recommend the displays we"ve tested and sell here.

Each order comes with an assembled, tested RA8875 breakout and a stick of header. You"ll also need to purchase a 40-pin TFT screen. We currently have 4.3" and 5.0" screens available.

To get you started we"ve written a graphics library that handles the basic interfacing, drawing and reading functions.Download the Adafruit RA8875 library from githubandinstall as described in our tutorial.Connect a 40 pin TFT to the FPC port and wire up the SPI interface to an Arduino as described in the example code. Once started you"ll be able to see the graphic/text demo and then touch the screen to "paint". For more advanced details on what the RA8875 can do (and it can do a lot) check the datasheet.

that 7 inch display uses the RA8875, you can see that on the specification of the display. The 320x240 uses the ili9341 (that is why the name of the library is ili9341).

I found two libraries, I don"t think they will be optimized for the Teensy. Test this one https://github.com/sumotoy/RA8875 and this one https://github.com/adafruit/Adafruit_RA8875

In summary.. the display will work, and is most likely that the capacitive IC will also work read this (https://github.com/sumotoy/RA8875/wiki) so you are aware of the library limitations.....

The SD holder mounted on buydisplay will not work, you can get working at incredible low SPI speed but sincerily I never get really working, they mounted capacitors, series resistors and prolly pullups.

The best way I found it"s send an entire line, better than one pixel a time but still not efficent, I"m actually cannot find another way in datasheet, so don"t expect to read large images in less a second on a 800x480 display, it will take not less than 3 secs using the max SPI speed and a SDholder very near to Teensy with a high speed SD card.

The library can use any permitted Teensy 3.0,3.1 and LC configuration, it"s compatible with the PJRC Audio Card and it"s SPI Transaction compatible, it works well with the new SD optimized for Teensy library by Paul. Datasheet on hand the RA8875 has a SPI limit of 12Mhz but (after weeks of testing) actually I"m driving it at 22Mhz without problems by modulating SPI speed on some register so when you work with that SPI speed you always have to use short cables and good decoupling, it can work with a good quality breadboard but use always short cables and be sure contact it"s good.

The RA8875 library already support it internally, don"t need an external FT5206 library, just go to RA8875UserSettings.h file and uncomment #define USE_FT5206_TOUCH.

It"s correct, but you missed the TC_INT pin for the Touch screen (try pin 2) and you MUST use 2 pullup resistors on SDA and SCL (2 x 2k2 resistors between each I2C line and 3V3).

Note that ER-TFTM070-5 uses a lot of current for backlight, you will need a separate supply! In that case you need to wire the RST pin as well (any free Teensy pin should work).

Some user configured ER-TFTM070-5 at 5V and they are able to drive it by 5v from Teensy but you can easily get garbage on screen because the voltage should be at list 4.8V and stable, not less.

The RA8875 it"s a great controller, actually it"s the only one that uses very tiny microcontroller resources (you can use a 800x480 16bit color display with 5 concurrent touches, actually impossible with any other display).

To get faster speed you need to go to SSD series chip, they work with 16bit data so use a lot of pins but they can work as frame buffer so sending pixel data it"s a fast business.

C:\Program Files (x86)\Arduino\libraries\RA8875-0.70\RA8875.cpp: In member function "void RA8875::_charWriteR(char, uint8_t, uint8_t, uint8_t, uint16_t, uint16_t)":

C:\Program Files (x86)\Arduino\libraries\RA8875-0.70\RA8875.cpp: In member function "void RA8875::_drawChar_unc(int16_t, int16_t, int16_t, const uint8_t*, uint16_t, uint16_t)":

About the powerup sequence... It"s normal that you power up the LCD first! The Teensy has to be able to initialize the display when it power ups but LCD it"s not on, Teensy will start to initialize...nothing.

I strongly suggest (in that case) to use always the RST pin, the RA8875 get ready sooner that Teensy and Teensy it"s still able to reset it and initialize correctly.

About 7" supply (and why it needs a separate supply), the 7" model has a backlight that suck a lot of current, too much for any USB. I have a PC that is able to give more than 500mA on USB but I have noticed some garbage on screen from time to time, this was caused by the supply voltage that was not stable and modulate from 4.90V to 4.45V, setting brightness to 150 stabilized to 4.80V.

On Eastrising boards (and Adafruit) the backlight it"s handled internally by RA8875 using an internal PWM generator and this is why (if RA8875 it"s not correctly inited) it appears completely black with no apparent life, in contrast with other displays where you get the backlight on (at list) but thanks to this you can setup your display to consume less power by adding brightness(nnn) after initialization, I was able to supply this large 7" beast with a battery by using 150, 120 value.

This tells library to include the FT5206 routines that handles capacitive touch screen. The 7" screen uses an external FT5206 chip as capacitive touch but RA8875 handles only resistive touch internally so this command enables the correct routines.

The RA8875UserSettings.h contains a lot user defines, this is necessary for tune the library in relations your needs. You will notice that once enabled #define USE_FT5206_TOUCH many examples will give you an error caused by the FT5206 routines that needs the wire.h to be included.

I" own Eastrising 7" capacitive as well and of course a Teensy 3.1, tried with adafruit library until I come across you library last week and I"m so impressed! It"s fast, much faster and impressive amount of features.

Try to check if the TC INT pin goes low when you touch screen! If yes, maybe add a 10K resistor between TC INT and 3V3 as pullup may help but in my tests was not necessary.

I"m pretty sure that you don"t have any capacitive touch actually present, maybe it"s a resistive one but can be a 7" display without any touch capabilities!

I wroted already a note to Eastrising (about this and the nonsense capacitors in the SPI lines) but never respond, Buydisplay are more gentle but actually the just sell and not produce the board.

Have to tell that using SD with such a large screen in serial SPI it"s a slow business and there"s no way to accellerate until you use 16bit parallels will use almost all your microcontroller pins.

What about try to mount a DIP to SMD adaptor on the display? If you mount your Flash chip on a DIP adapter you will able to program externally then mount on display by just plug it. I"m not a great SMD solder but I"m sure there"s a way to do that.

Using I2C flash for images? I2C it"s really slow! the display works at 22Mhz and you are plan to use max 400Khz from I2C device, I don"t think it"s a good idea.

The RA8875 based displays are just regular LCD with a controller a bit more sofisticated than usual, the RA chip has hardware accellerated graphic primitives, some internal font stored inside, a RAM buffer for the entire screen (plus some more bytes for extra fonts and patterns) and a dedicated SPI for external ROM font and a Flash Chip, quite a lot but not so powerful as the 4D system that can really store images, maybe consider one of those (expensive) displays for your application?

You want to store images in the display.... Where? The display has a buffer RAM and at 800x480 it"s limited at 8bit and the Flash memory on the LCD it"s read only since it stays in another SPI dedicated bus, you cannot send images to flash trough RA.

I have found that older thread. It is matching what I am trying to do... I have ordered the same display and want to used it with Teensy 3.2 and Audio. So, my problem is, that the PINs that are used for that TFT are allready used for Audio... What can I do?

I have found that older thread. It is matching what I am trying to do... I have ordered the same display and want to used it with Teensy 3.2 and Audio. So, my problem is, that the PINs that are used for that TFT are allready used for Audio... What can I do?

The Audio shield also uses the SPI bus, but you have to use two alternate pins (you have to use pin 7 instead of pin 11, and pin 14/A0 instead of 13). In addition, you need to change the CS pin (chip select) to be a pin that isn"t used by anything else. Some devices need to use the special hardware chip select pins, and you would need to use 20/A6 or 21/A7 if the display has the special optimizations.

ah, OK.... yes, I understand... so, I2C is able to drive some more devices on the same Bus... so I can use the same PINs... But that is not possible for SPI... so thats why I need to use different SPI- PINs 1 and 14 and CS PIN 20...

The audio board uses pin 14 as SCLK (instead of 13), pin 7 for DOUT/MOSI (instead of pin 11), pin 12 for DIN/MISO as SPI pins. You can share SPI devices, using SCLK, DOUT/MOSI, and DIN/MISO for all devices, providing each device has a separate chip select (CS) pin. If you are not using the standard pins, you have to tell SPI about the alternate pin usage.

In addition, most of the displays have a second pin (D/C) that flips between data/command, and this pin also must be a special CS pin. In the displays I"ve looked at (ST7753, SSD1351), there is a reset pin, but that pin does not have to be one of the special pins.

This means of the special pins, you have only pins 20/A6 and 21/A7 (pins 9, 11, 13, 22, and 23 are used for i2s; pin 15/A1 has resistors/etc. for soldering a volume switch to the board).

The only problem I"ve found with the 7" display is the pixels are not square, so when you draw a circle it is not completely round. Makes displaying gauges not look right.

its me again... So display is working very nice.... :-) But when I am trying to add some code (what is in /* */ in setup() ) for Audio-shield the display stopps working... So what is going wrong?

In the meanwhile I have tryed some things... and found out, that TFT- problems starts when SD- Card is in the Audio-shield-slot... w/o any changes in code...

And so I read some postings to that issue and found that there might be a problem with RA8875- SPI and other devices on the same line. So TFT is ussing PIN7 on teensy for MOSI, PIN8 for MISO and PIN14 for CLK.

Audio Board uses (?) PIN7 for MOSI too and PIN12 for MISO... PIN11 could also be used as MOSI, but is allready used from Audio-Board... so what can I do? Would it be better to use PIN11 for TFT? But what should I do with that connection to Audio-Board?

If you are going to use the Audio board, you need to use the same SPI pins for SCLK (i.e. pin 14/A0 instead of 13), MOSI (i.e. pin 7 instead of pin 11), and MISO (pin 12) for your device. You can"t use either pins 6 or 10 for the CS since those are used by the Audio board. See this https://www.pjrc.com/teensy/td_libs_SPI.html and scroll down to the section on Alternate Pins.

For these LCD"s the XG4200 uses a CPLD based LCD Hardware Accelerator. This hardware accelerator is based on the XG5000 CPLD technology and includes 256k or 1MByte dedicated LCD memory (depends on LCD type). The Rabbit 4000 can access the LCD memory via its I/O interface without extra waitstates. The Hardware Acceleration is used for drawing graphic primitives (X-Graph DynamicC library) and supports 64k colors on all LCD"s.

For the 5.6" LCD (contact us for availability) uses the Rabbit 4000 innovative build-in DMA controller. Combined with a fast SRAM chip and X-Graph knowledge this allows the LCD refresh logic and Rabbit memory access to coexist without the need for a wait line or waitstates. This results in fast graphical LCD performance for graphic LCD"s with a size up to QVGA in max. 8 bit/pixel mode.

By using a set of optimized assembly graphic functions, graphic primitives can be drawn directly in the video memory map. This without a noticable build-up delay. The processor has full read/write access to any memory location in the video memory without the need for waistates.