No, I have several CYD with 2 USB ports.

There is no code in this sketch to enable the backlight.

They forgot to enable the backlight! Schoolboy error.

Add this to your header section (at the top):

#define BACKLIGHT_PIN 21 // Screen backlight LED

Note – change the number if your board uses a different pin, but this is most common for all CYD

Next add this to the Setup section:

// Set up hardware pins
pinMode(BACKLIGHT_PIN, OUTPUT);
digitalWrite(BACKLIGHT_PIN, HIGH);

Sorted!

Thanks for sharing, your post helped me with solving the same issue mentioned by @John Gerrard.

It sounds like you don’t have the LVGL libraries installed to include all the font sizes needed for this program. I would go through the complete installation process outlined in https://randomnerdtutorials.com/lvgl-cheap-yellow-display-esp32-2432s028r/. Check especially that you have the correct lv_conf.h file in the C:\Arduino\libraries folder and that you have the lv_font_montserrat .c files in C:\Arduino\libraries\lvgl\src\font folder. Replace the c:\Arduino for the path on your computer of course.

For the second issue, I think you need to change your Partition Scheme in the Tools menu to Huge APP.

That’s great.
Thanks for sharing this.

Regards,
Sara

int analogValue = analogRead(LDR_PIN); // Read analog value from GPIO 34
//Serial.print(“LDR Analog Value: “);
//Serial.println(analogValue);
if(analogValue > 10 ) {
analogWrite(BACKLIGHT_PIN, 16);
} else
{
analogWrite(BACKLIGHT_PIN, 256);
}

#include <Arduino.h>
#include <WiFi.h>
#include “AudioFileSourceSD.h”
#include “AudioFileSourceID3.h”
#include “AudioGeneratorMP3.h”
#include “AudioOutputI2S.h”

AudioFileSourceSD *file;
AudioGeneratorMP3 *mp3;
AudioFileSourceSD *source;
AudioOutputI2S *out;
AudioFileSourceID3 *id3;
SPIClass SDSPI(VSPI);

void setup() {
Serial.begin(115200);

Serial.print(“setup”);
Serial.println();

Serial.println();
WiFi.mode(WIFI_OFF);
delay(500);

pinMode(5, OUTPUT);
digitalWrite(5, HIGH);
SDSPI.begin(18, 19, 23); // SDSPI.begin(SCLK, MISO, MOSI);
SDSPI.setFrequency(1000000);
SD.begin(5, SDSPI);

Serial.print(“end setup”);
Serial.println();

}

void playMP3(char *filename) {
file = new AudioFileSourceSD(filename);
id3 = new AudioFileSourceID3(file);
out = new AudioOutputI2S(0,AudioOutputI2S::INTERNAL_DAC);
out->SetOutputModeMono(true);
out->SetGain(0.019);
out->SetRate(44100);
mp3 = new AudioGeneratorMP3();
mp3->begin(id3, out);
while (mp3->isRunning()) {
if (!mp3->loop()) mp3->stop();
}
}

void loop() {
playMP3(“/01.mp3”);
}

Hi.
That’s probably because the SPI communication for the SD card is interfering with the SPI for the touchscreen.
At the moment, we don’t have a tutorial showing how to use both.
We intend to do that in a near future.

Regards,
Sara

I’ve added to the program to make it a bedside clock that uses the LDR to automatically dim the display in a darkened room. I’ve also added the ability to play an MP3, in my case ocean sounds pink noise to mask ambient noise for better sleep.

Unfortunately I’ve had to resort to using an external Serial MP3 Player that interfaces with the CYD using P1.

Although I have a separate program that successfully plays MP3 files using the CYD SD card reader and Speaker output, it conflicts with the XPT2046_Touchscreen library and throws “AudioFileSourceSD.h: E (545) ADC: CONFLICT! driver_ng is not allowed to be used with the legacy driver”. It would be awesome if we could resolve this with updated libraries because we could not only make something useful, but demonstrate how every feature of the CYD can be used.

BTW, I’m happy to share the sketch for you to use however you like.

Hi.
Make sure that you entered valid information on the following variables:
// Replace with the latitude and longitude to where you want to get the weather
String latitude = “41.14961”;
String longitude = “-8.61099”;
// Enter your location
String location = “Porto”;
// Type the timezone you want to get the time for
String timezone = “Europe/Lisbon”;

Regards,
Sara