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Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival
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Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival

by mrfibreoptic on Wed May 27, 2020 3:06 am

received today, does not power up. does anyone have any troubleshooting steps?

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Re: Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival

by adafruit_support_carter on Wed May 27, 2020 7:33 pm

What main board are you attaching the TFT FeatherWing to? What program are you running to test the display?

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Re: Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival

by mrfibreoptic on Wed May 27, 2020 10:38 pm

Hi

this is the ESP32 https://www.jaycar.com.au/esp32-main-bo ... n/p/XC3800

I've followed these instructions https://www.jaycar.co.nz/medias/sys_mas ... alMain.pdf

this is the pin out https://www.jaycar.co.nz/medias/sys_mas ... etMain.pdf

I have connected in this order

ESP to TFT
3.3v to pin 28
EN to pin 27
GND to pin 26
pin 33 to pin 10 TFT-DC
pin 15 to pin 9 TFT-TCS
pin 32 to pin 6 TFT-RCS
pin 18 to pin 11 SCK
pin 23 to pin 12 MOSI
pin 19 to pin 13 MISO

SD CARD not used

cheers

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Re: Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival

by mrfibreoptic on Wed May 27, 2020 10:40 pm

Using Arduino 1.8.12

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Re: Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival

by adafruit_support_carter on Thu May 28, 2020 12:47 pm

That ESP32 board is not in the Feather form factor so can't attach directly to the TFT FeatherWing. How have you made the connections between the two? Can you post a photo of the setup.

One quick thing to check - there's a power switch on the back of the TFT FeatherWing. Make sure that is ON.

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Re: Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival

by mrfibreoptic on Sat May 30, 2020 3:13 pm

I've already said how i have connected:

ESP to TFT
3.3v to pin 28
EN to pin 27
GND to pin 26
pin 33 to pin 10 TFT-DC
pin 15 to pin 9 TFT-TCS
pin 32 to pin 6 TFT-RCS
pin 18 to pin 11 SCK
pin 23 to pin 12 MOSI
pin 19 to pin 13 MISO

SD CARD not used

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Re: Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival

by mrfibreoptic on Sat May 30, 2020 3:57 pm

IMG_5500.jpeg
IMG_5500.jpeg (583.56 KiB) Viewed 53 times
IMG_5500.jpeg
IMG_5500.jpeg (583.56 KiB) Viewed 53 times
ESP to TFT
3.3v to pin 28 - RED
EN to pin 27 - ORANGE
GND to pin 26 - BLACK
pin 33 to pin 10 TFT-DC - GREY
pin 15 to pin 9 TFT-TCS - BLUE
pin 32 to pin 6 TFT-RCS - YELLOW
pin 18 to pin 11 SCK - GREEN
pin 23 to pin 12 MOSI - GREY
pin 19 to pin 13 MISO - WHITE

SD CARD not used - BROWN
Attachments
IMG_5502.jpeg
IMG_5502.jpeg (564.21 KiB) Viewed 53 times
IMG_5501.jpeg
IMG_5501.jpeg (714.02 KiB) Viewed 53 times

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Re: Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival

by mrfibreoptic on Sat May 30, 2020 3:59 pm

more
Attachments
IMG_5505.jpeg
IMG_5505.jpeg (619.09 KiB) Viewed 53 times
IMG_5504.jpeg
IMG_5504.jpeg (566.06 KiB) Viewed 53 times
IMG_5503.jpeg
IMG_5503.jpeg (529.35 KiB) Viewed 53 times

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Posts: 10
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Re: Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival

by adafruit_support_carter on Mon Jun 01, 2020 11:38 am

A little surprised to see the backlight on. It is powered via a set of pins that are not currently connected:
https://learn.adafruit.com/adafruit-3-5 ... -2928514-3
It may be getting back powered via some other path though.

What Arduino library are you using? What Arduino sketch are you running?

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Re: Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival

by mrfibreoptic on Mon Jun 01, 2020 12:38 pm

Could you please send the screens pinout diagram! The included adafruit instruction are terrible.

I’m am trying to use the ‘adafruit hx8357 - graphictest featherwing’

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Re: Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival

by adafruit_support_carter on Mon Jun 01, 2020 1:02 pm

Pinouts for the TFT FeatherWing are covered here:
https://learn.adafruit.com/adafruit-3-5 ... ng/pinouts
Schematics and CAD files are available here:
https://learn.adafruit.com/adafruit-3-5 ... /downloads

It may also be useful to consult the standard Feather pinout which is documented here:
https://learn.adafruit.com/adafruit-fea ... cification

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Re: Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival

by mrfibreoptic on Mon Jun 01, 2020 1:06 pm

I’m sorry, but I stated that those instructions are terrible!!! There is even a mistake in them!!!!!

Please send an actual pinout! Not a copy and paste, one engineer to another engineer?

I have seen all of these links

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Re: Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival

by adafruit_support_carter on Mon Jun 01, 2020 1:12 pm

To use the TFT FeatherWing with hardware it was not designed for, I would consult the PCB CAD files and carefully work pin by pin to make sure all required connections are made, both data and power. I would then carefully go through the source code to make sure the correct pins are being assigned and used for the target platform.

Having an actual Feather to sanity check with a known working arrangement would also greatly help.

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Re: Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival

by mrfibreoptic on Mon Jun 01, 2020 1:18 pm

That’s a cop out! I’ve also purchased one of these, hopefully it gets my screen going so I can reverse engineer it https://nicegear.nz/product/adafruit-hu ... ther-board

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Re: Adafruit 3.5" 480x320 TFT FeatherWing dead on arrival

by adafruit_support_carter on Mon Jun 01, 2020 1:41 pm

That will definitely help for the sanity check. There are preprocessor defines for the pins in the example sketch:
https://github.com/adafruit/Adafruit_HX ... ng.ino#L26
so should be able to just upload as is without any changes.

Just ran the combo with the graphicstest_featherwing example to verify and works as expected:
tft_test1.jpg
tft_test1.jpg (166.08 KiB) Viewed 40 times

tft_test2.jpg
tft_test2.jpg (207.57 KiB) Viewed 40 times

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Please be positive and constructive with your questions and comments.