@teastain fantastic link many thanks again, do you know anything about using DMA on the ESP32-S3?

I want to try and improve the gfx performance of the Arduino_GFX library, and it looks like memory performance is quite the limiting factor (possibly due to the canvas buffers being allocated in ps_ram?).

Found that the arduinoexpressif32 framework has some psram functions builtin:

if psramFound() == true, then you can call ps_malloc(), ps_calloc(), and ps_realloc()... but apparently no ps_free(), ps_size(), or ps_avail()

So it's possible and quite easy to allocate the psram of the T-Display S3, but annoyingly not find out how much there is, or to be able to free it if you don't need it anymore.

@teastain
When you only use a single simple sketch, Arduino IDE is ok.
When you use many files, many classes, many self-maintained libraries, platformio is a better choice.

The signal value of 20 is very normal. In my case, it is about 19~23.
6fcce038-0f81-4cc7-a055-8a48945de6f3-image.png

@teastain Perfect, thank you!

@vintageslots yes it does

@teastain What a shitshow! First my Arduino IDE got really funky and wasn't able to connect to Serial. I didn't realize I had upgraded the ESP32 board module and TFT_eSPI lib to the latest, neither of which work. I backed out of the newest TFT_eSPI lib and then twice downgraded the Expressif module to 2.0.4. And lastly, I put the pinMode for SDA and SCL in the setup() function, but that somehow borked the pinouts.
I have everything running smoothly now and was able to just reassign SCL to 44 and SDA to 43 without have to cross the wires.
I'm am greatly appreciative of your help. You got me on the right tack with your code and pinmodes. THANK YOU!

It seems iPhones don't show BLE connections in the BT pairing screen but apps tailored to connect to BLE devices have no problem on the iPhone end.

I am using MPy and have similar behavior to Terry.

Using the initsetup.py logo as a test app as a baseline:
Without battery) It takes ~3 seconds for the LCD to light up and show the logo. I can reliably repeat the unplug/plug-in process and ~3 seconds is a very good estimate...

With battery) there is no indication the device is powered... I plug in the USB, hit the RST button and the log comes up after 3 seconds. Now when I unplug/ plugin the USB port the LCD is on / off instantly.

The behaviors suggest that the battery alone won't boot the system, nor will it keep the LCD lit but the board itself remains powered.

Definitely need clarity here as to what we should be expecting. Eliminating the need for an external boost power supply is a core feature I am interested.

Also wondering if it's safe to power the board via the 5v port...

Here is my new Faster MicroPython Driver for the T-Display-S3. It's a work in progress and it is slightly different than my last driver, but it is faster.

It's not specific to the T3 but more RTOS. https://www.tutorialspoint.com/esp32_for_iot/esp32_for_iot_setting_up_rtos_for_dual_core_and_multi_threaded_operation.htm

@vali I was able to test a similar theory with a pair of 438mhz ones here.
Get any simple RF 868mHz pair of modules (4pin probably), and then record the real device triggering, using the rx module connected to something like a raspberry pi to do the recording. Then play that recording back through the transmit module and see if the boiler triggers. Repeat the trigger test with off and then see if it still works for both. If so you have basic success, now either look at decoding, or just add your own thermometer and send off/on message from the esp instead of raspberry pi. Not that simple in reality but not crazy complex either. Combine a few tutorials/videos...

@moumi32 examples / factory
or examples / arduino / factory

This post has instructions with link to official repository and flashing instructions: https://community.lilygo.cc/post/295

There is also a GMT offset and DST (daylight savings) you can modify in the header file pin_config.h

Look at the timezone functions for esp32 and you'll see you can specify a timezone instead and forget about offsets, but requires changing one line.

@teastain Thank you very much. That fixed my problem.

I found the problem.

I forgot the S3 uses a different TFT_eSPI library.

Once I restored the old library things are working.