Adafruit 3.5" TFT HX8357D noise problems?

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clfaye

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Hi,
I have this running (erratically) with SPI using the ILI9341_t3 library. It was starting the graphic test examples and then white screening after a couple of seconds. I added 100 ohm resistors on the clock, MISO, MOSI, CS, and D/C pins. Once I added those resistors, it's white screen all the time. But - the serial monitor behaves as if everything is fine. It reports out the time to complete all of the graphic tests. Are there lines that I should not be using resistors with? The power to the screen is from USB via the Teensy Vin.
Thanks for any help!
 
Try connecting the seventh pin RST (Reset) on TFT to teensy pin8.

On teensy 3.x try this:
Code:
#define TFT_CS 10
#define TFT_DC  9
#define RST 8 // reset pin

#include <SPI.h>
#include <Wire.h> // this is needed even tho we aren't using it
#include <ILI9341_t3.h>

ILI9341_t3 tft = ILI9341_t3(TFT_CS, TFT_DC, RST);
 
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