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What's the best LCD Touch Screen display that will go with t
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What's the best LCD Touch Screen display that will go with t

by pustudent on Tue Feb 09, 2021 10:44 am

Our project requires bluetooth and needs a decent sized touch screen to go with the Adafruit Feather M0 Bluefruit LE microcontroller. We were looking at the 7.0" 40-pin TFT Display - 800x480 with Touchscreen, but it appears that it needs the RA8875 driver. Is there a more compatible option for our microcontroller? If not, how do I incorporate the driver with our microcontroller?

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Re: What's the best LCD Touch Screen display that will go wi

by mikeysklar on Wed Feb 10, 2021 5:44 pm

@pustudent,

The RA8875 board is compatible with our M0 line of controllers so you should be good to go following this guide. The issue for you will probably be memory constraint more than anything else so you might want to consider a BLE enabled M4 board.

https://circuitpython.org/downloads?q=ble

https://learn.adafruit.com/ra8875-touch ... rd/arduino

Code: Select all | TOGGLE FULL SIZE
 Start by connecting the power pins

3-5V Vin connects to the Arduino 5V pin
GND connects to Arduino ground
SCK connects to SPI clock. On Arduino Uno/Duemilanove/328-based, thats Digital 13. On Mega's, its Digital 52 and on Leonardo/Due/Metro M0/M4 it's ICSP-3 (See SPI Connections for more details)
MISO connects to SPI MISO. On Arduino Uno/Duemilanove/328-based, thats Digital 12. On Mega's, its Digital 50 and on Leonardo/Due/Metro M0/M4 it's ICSP-1 (See SPI Connections for more details)
MOSI connects to SPI MOSI. On Arduino Uno/Duemilanove/328-based, thats Digital 11. On Mega's, its Digital 51 and on Leonardo/Due/Metro M0/M4 it's ICSP-4 (See SPI Connections for more details)
CS connects to our SPI Chip Select pin. We'll be using Digital 10 but you can later change this to any pin
RST connects to our Reset pin. We'll be using Digital 9 but you can later change this pin as well.
INT connects to our Interrupt pin. We'll be using Digital 3 but you can later change this pin too.
That's it! You don't need to connect any of the other pins.


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