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3.5" TFT 320x480 Breakout Board - HXD8357D won't dim
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3.5" TFT 320x480 Breakout Board - HXD8357D won't dim

by kirkreiten on Sat Dec 02, 2017 10:59 pm

Hi, i bought a 3.5" TFT 320x480 + Touchscreen Breakout Board w/MicroSD Socket - HXD8357D. Hooked it up to a teensy. The test programs work, except when I use a PWM signal on its "Lite" pin.

pinMode(6,OUTPUT);
analogWrite(6,250); // goes blank and white
analogWrite(6,50); // goes blank and dimmer
analogWrite(6,0); // goes blank and black

It uses SPI, 11, 12, and 13.
Reset is 8
CS is 10
D/C is 9

The display turns grey and seems to hang. The PWM part seems to work fine but the display dies. Need to reset all..
+5v is good. Soldering is good. SPI lines are 2ish inches.

Thoughts.

Thx

Kirk

kirkreiten
 
Posts: 1
Joined: Thu Jun 15, 2017 10:34 pm

Please be positive and constructive with your questions and comments.