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Xinyuan-LilyGO / T-Display-S3

MIT License
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TFT only working when connected via USB to Power Source or PC #155

Closed Noengineer closed 1 year ago

Noengineer commented 1 year ago

Solved! Thank you Terry / teastainGit Hi guys,

I am having this issue where I can´t use the display while I am powering the device via battery connector. First I thought it was my code but I tried Volos' Snake game and it also just lights up the display when connected via USB. (https://github.com/VolosR/SnakeT-DisplayS3). Then I thought that maybe the 700mah battery was not putting out sufficient current, so I powered the device with two 2200 mah cells in parallel and the screen still would not turn on. Then I thought maybe it was because I didn´t install all necessary li My code makes the TTGO T-Display S3 act as a simple remote control for another esp32, so the display is not necessary for the code to function, but it would be nice to have as an indicator for when the device is in sleep mode and when it is active. (and it´s pretty).

Greetings

teastainGit commented 1 year ago

Please see my LilyGO T-Display S3 setup and examples: https://github.com/teastainGit/LilyGO-T-display-S3-setup-and-examples This sounds like a case: C) Can run on USB power but not battery connector: In declarations add

define PIN_POWER_ON 15 // just before the setup and then in setup add:

pinMode(PIN_POWER_ON, OUTPUT);  //"triggers the LCD backlight, and enables battery power
digitalWrite(PIN_POWER_ON, HIGH);)  //on startup"
LilyGO variously refers to them as "LCD power on" OR "PIN_POWER_ON")

Hope this helps! -Terry

Noengineer commented 1 year ago

Works like a charm

Noengineer commented 1 year ago

Please see my LilyGO T-Display S3 setup and examples: https://github.com/teastainGit/LilyGO-T-display-S3-setup-and-examples This sounds like a case: C) Can run on USB power but not battery connector: In declarations add #define PIN_POWER_ON 15 // just before the setup and then in setup add: pinMode(PIN_POWER_ON, OUTPUT); //"triggers the LCD backlight, and enables battery power digitalWrite(PIN_POWER_ON, HIGH);) //on startup" LilyGO variously refers to them as "LCD power on" OR "PIN_POWER_ON") Hope this helps! -Terry

Resolved