Adafruit 1.8" Color TFT Shield backlight does not work
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Please be positive and constructive with your questions and comments.
- Euripides1
- Posts: 4
- Joined: Mon Sep 19, 2022 11:29 am
Adafruit 1.8" Color TFT Shield backlight does not work
So i just soldered my shield plugged it in and run the graphics test from the Adafruit_ST7735_and_ST7789_Library. It barely shows on the screen. But, if i hold the reset button on the shield it lights up.
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- adafruit_support_carter
- Posts: 29189
- Joined: Tue Nov 29, 2016 2:45 pm
Re: Adafruit 1.8" Color TFT Shield backlight does not work
What if you press down on just the TFT it self?
- Euripides1
- Posts: 4
- Joined: Mon Sep 19, 2022 11:29 am
Re: Adafruit 1.8" Color TFT Shield backlight does not work
I tried pressing on the tft and still nothing, it didn't make a difference
- adafruit_support_carter
- Posts: 29189
- Joined: Tue Nov 29, 2016 2:45 pm
Re: Adafruit 1.8" Color TFT Shield backlight does not work
Holding the reset button should prevent the code from running. So seems weird that it would turn on the backlight. Seems more like some kind of connection issue. Is that behavior very repeatable? Can press/hold reset button and backlight reliably comes on? Release and it goes off? Press again, back on? etc?
- Euripides1
- Posts: 4
- Joined: Mon Sep 19, 2022 11:29 am
Re: Adafruit 1.8" Color TFT Shield backlight does not work
Yes that's exactly what the reset button currently does. I don't think there is a connection issue, as you can see from the pictures
- Euripides1
- Posts: 4
- Joined: Mon Sep 19, 2022 11:29 am
Re: Adafruit 1.8" Color TFT Shield backlight does not work
So could you tell me what we can do about this?
- adafruit_support_carter
- Posts: 29189
- Joined: Tue Nov 29, 2016 2:45 pm
Re: Adafruit 1.8" Color TFT Shield backlight does not work
This behavior is very odd, but seems most likely a connection issue. Please go over all soldering connections and make sure they are good. General ref here:
https://learn.adafruit.com/adafruit-gui ... n-problems
Reflow any pins that appear to be under solder or cold solder and not wetted out enough on the pads:
https://learn.adafruit.com/adafruit-gui ... n-problems
Reflow any pins that appear to be under solder or cold solder and not wetted out enough on the pads:
Please be positive and constructive with your questions and comments.