@teastain Thank you! this is insightful. Really appreciated. i'd have to look into it when i have the time... perhaps the type of battery? i don't know. but at this point.. USB-C it is.. hahahah

@papbo What is your current ESP32 version? Try upgrading?

@teastain It should be part of the sample sketch "factory" " from https://github.com/Xinyuan-LilyGO/T-Display-S3 ".
I just can't use it.

@fdaher 👍

@roblatour Great news!
I will add it to my GitHub repo and credit you!
https://github.com/teastainGit/LilyGO-T-display-S3-setup-and-examples
-Terry

See https://community.lilygo.cc/topic/30/can-t-download-firmware-on-sim7600g-most-of-the-time for detail.

@yakuzja There are two ways to get started quickly

Use the Arduino IDE and install the ESP32 support package. Use the VSCODE PIO plug-in, this plug-in can automatically configure the environment for you, the compilation speed is relatively fast, and it also supports Arduino functions and libraries

@metawops I have no idea what the factory sketch is supposed to do!
Thats why I made my HotHead example, to debug and get it running.
I studied the code and made the Hothead tempsensor and a FPS version (not included in the repository that I posted) to determine Frames Per Second.
I also added the LCD backlight ON command to HotHead, after both displays "went dead". This revived them.
The factory tft.ino included in the factory download just shows you how to learn the tft.drawsprite and sprite.drawString functions, with examples.
If the LilyGO is really stuck you can try the black reset button on the back and/or the "left" (when holding it vertical with the USB down) button marked "BOT" (boot) in various combinations to clear it
-Terry

I found the solution from LILYGO Support itself.
For anyone wondering how to solve this, you need to hold the RST pin of LoRa high before ESP32 goes to sleep so that LoRa will be active.

Add this line before going to sleep

gpio_hold_en(GPIO_NUM_14);

The full sleep function will look like this.

void sleep_controller(long seconds) { //Deep Sleep ESP32 Serial.println("Sleeping for " + String(seconds) + " secs"); esp_sleep_enable_timer_wakeup(1000000LL * seconds); // Hold the RST pin of LoRa before going to sleep gpio_hold_en(GPIO_NUM_14); esp_sleep_enable_ext0_wakeup(LORA_DIO0_INT, 1); esp_deep_sleep_start(); }

@teastain [EDIT]
My repo contains a link to the Official LilyGO T-Display S3 repo, so it is always current.

Yes, crystal burrs cause the problem.It has now been fixed in the latest version

@errolt
https://github.com/LilyGO/TTGO-ESP8266-0.91-SSD1306/blob/master/t12_8266_v1.3.pdf
The schematic is here

@andyclap When the battery is depleted, the noise source is from the DCDC boost inductor on the board, thanks for your feedback, I will discuss the solution with my team.
Recommendations on power consumption:

When starting T-Higrow, it is recommended to reduce the main frequency of ESP32 to 160, or lower, if not using WiFi, it is recommended to lower to 80, 40MHz If WiFi transmission is used, it is recommended to reduce the number of transmissions, and then package and send the data uniformly. The number of acquisitions can remain unchanged.

Thanks for your feedback.

@scheeri It can be connected to 5v, but after connecting to 5v, you cannot plug in USB at the same time.

@caz that's great , if you have any other questions in use, please feel free to contact us.

HTB19DIoaovrK1RjSszfq6xJNVXaq.jpg
D1 and D2 pins are I2C

@gfaman said in T5 4.7 e-paper missing library::

hal/rmt_ll.h:

hey, I just had the same problem. just comment this header, and everything will compile correctly.
arduino already have these headers.

TTGO LoRa32 V2.1-1.6 is the same as TTGO LoRa32 V2.1-1.6.1, we just changed the silk screen on the board. The OLED on the board uses (SDA)21 , (SCL)22 There are schematic diagrams and reference codes in our warehouse, please see here Link

@ajlenze Only ESP32 can be found in the Arduino Boards Manager. You need to install ESP32. And C3 is a derivative of ESP32. After installing ESP32, you can select the C3 subclass chip in the board

Case looks nice. Does it give you access to the 3 buttons on the S3?