MicroPython Forum (Archive)

The IRQ-output of the XPT2046 does not need a clock signal. Can you check with an oscilloscope, whether there is any acticity on the IRQ pin when you push the screen. It is more or less an analog output, so transition may be too slow.

If you talk about Pin0, ist that the Pin labeled on the LoLin board with 0? If yes, that one, GPIO0, is also used for switching the device mode between run and bootload. Try to use another Pin of the LoLin.

So at least I can see, that is is "normal" level, and the ESP8266 should be able to receive it. But you still do not know, whether any data is actually exchanged.

Do you have any tools like oscilloscope or logic analyzer to visualize the signal on the data line? Or at least an DMM to tell the static signal level on the data line.

The uart.read() may timeout fast. In the reading loop, you should first wait by calling uart.any(), until you receive some characters, and then call uart.read(). About the connection: I assume that you connect the orange wire to 3.3V Vcc, and that the idle state of the UART line is at a high level. ...

Rotations is a simple linear transformation, which you can do in your code, like: x_new = a + b * x, where the a and b values have to be determines experimentally. Rotating by 90° or 270° would then only require to swap x and y. I cannot help you much with the calibration values, since that would re...

Even when you pre-allocate a big file, you still would have two writes. One at the portion of the file where you write the data, and one to the directory, keeping track of the file modification time. So in general that would not be much better than just appending to the file. Appending would in addi...

Look at this thread: viewtopic.php?f=15&t=6179&p=35250&hilit=reload#p35250
But what always works is soft reset with Ctrl-D and then a new import. That is more clean and does not take a lot of time.

You may also buy the Wemos D1 mini SD card shield and use an SD card.

I found buydisplay.com a good source for displays. Good quality, many sizes.