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Project guide
Qualia RGB-666 Eyes
You can use the monster-sized TTL RGB-666 Displays with the Qualia S3 for Monster Eyes. These displays are huge compared to the usual SPI TFT displays and the best part is there are a few round options, which are perfect for eyeballs.
There's a few things everyone loves: ice cream, kittens, and honkin' large TFT screens. We're no strangers to...
$19.95 each
In Stock
Display Options
Currently support for the round TTL RGB-666 displays have been added to Monster Eyes:
This is a screen for advanced hackers who like the look of a nice, round TFT screen with tons of pixels. The 2.1"...
$24.95 each
In Stock
This is a screen for advanced hackers who like the look of a nice, round TFT screen with tons of pixels. The 2.1"...
$39.95 each
In Stock
This is a screen for advanced hackers who like the look of a nice, round TFT screen with tons of pixels. This...
$54.95 each
In Stock
If you need some extra distance between the display and board, you can use a 40-pin FPC extension board and ribbon cable.
Give your 40 pin, 0.5mm pitch, devices a strrrreeeetch with this extension board. This 40pin FPC extension board has...
$4.50 each
In Stock
Display Init
Each display has its own initialization sequence that needs to be passed to start up the display. The example has these inits commented out with the 4" display uncommented as the default. If you've ever run Arduino code for the Qualia S3 before, these will look familiar to you.
Arduino_ESP32RGBPanel rgbpanel(
TFT_DE, TFT_VSYNC, TFT_HSYNC, TFT_PCLK, TFT_R1, TFT_R2, TFT_R3, TFT_R4,
TFT_R5, TFT_G0, TFT_G1, TFT_G2, TFT_G3, TFT_G4, TFT_G5, TFT_B1, TFT_B2,
TFT_B3, TFT_B4, TFT_B5,
// 1 /* HSYNC polarity */, 50 /* front porch */, 2 /* pulse width */,
// 44 /* back porch */,
// 1 /* VSYNC polarity */, 16 /* front porch */, 2 /* pulse width */,
// 18 /* back porch */);
// 4.0" 720x720 round display
1 /* hync_polarity */, 46 /* hsync_front_porch */, 2 /* hsync_pulse_width */, 44 /* hsync_back_porch */,
1 /* vsync_polarity */, 50 /* vsync_front_porch */, 16 /* vsync_pulse_width */, 16 /* vsync_back_porch */);
Arduino_RGB_Display gfx(
// 2.1" 480x480 round display
// RGB_W, RGB_H, &rgbpanel, 0 /* rotation */, true /* auto_flush */,
// &expander, GFX_NOT_DEFINED /* RST */, TL021WVC02_init_operations, sizeof(TL021WVC02_init_operations));
// 2.8" 480x480 round display
// 480 /* width */, 480 /* height */, &rgbpanel, 0 /* rotation */, true /* auto_flush */,
// &expander, GFX_NOT_DEFINED /* RST */, TL028WVC01_init_operations, sizeof(TL028WVC01_init_operations));
// 4.0" 720x720 round display
720 /* width */, 720 /* height */, &rgbpanel, 0 /* rotation */, true /* auto_flush */,
&expander, GFX_NOT_DEFINED /* RST */, hd40015c40_init_operations, sizeof(hd40015c40_init_operations));
// needs also the rgbpanel to have these pulse/sync values:
// 1 /* hync_polarity */, 46 /* hsync_front_porch */, 2 /* hsync_pulse_width */, 44 /* hsync_back_porch */,
// 1 /* vsync_polarity */, 50 /* vsync_front_porch */, 16 /* vsync_pulse_width */, 16 /* vsync_back_porch */
Example Code
After installing the Monster Eyes library, you can use the example below for the Qualia S3.
// Adafruit Monster Eyes -- one eye on an Adafruit Qualia ESP32-S3.
//
// Eye appearance comes from config.eye and BMP files on the CIRCUITPY drive.
#include <Adafruit_Monster_Eyes.h>
#include <Arduino_GFX_Library.h>
#define RGB_W 480
#define RGB_H 480
#define EYE_SCALE 2
// 2.1" round display
Arduino_XCA9554SWSPI expander(PCA_TFT_RESET, PCA_TFT_CS, PCA_TFT_SCK,
PCA_TFT_MOSI, &Wire, 0x3F);
Arduino_ESP32RGBPanel rgbpanel(
TFT_DE, TFT_VSYNC, TFT_HSYNC, TFT_PCLK, TFT_R1, TFT_R2, TFT_R3, TFT_R4,
TFT_R5, TFT_G0, TFT_G1, TFT_G2, TFT_G3, TFT_G4, TFT_G5, TFT_B1, TFT_B2,
TFT_B3, TFT_B4, TFT_B5,
// 1 /* HSYNC polarity */, 50 /* front porch */, 2 /* pulse width */,
// 44 /* back porch */,
// 1 /* VSYNC polarity */, 16 /* front porch */, 2 /* pulse width */,
// 18 /* back porch */);
// 4.0" 720x720 round display
1 /* hync_polarity */, 46 /* hsync_front_porch */, 2 /* hsync_pulse_width */, 44 /* hsync_back_porch */,
1 /* vsync_polarity */, 50 /* vsync_front_porch */, 16 /* vsync_pulse_width */, 16 /* vsync_back_porch */);
Arduino_RGB_Display gfx(
// 2.1" 480x480 round display
// RGB_W, RGB_H, &rgbpanel, 0 /* rotation */, true /* auto_flush */,
// &expander, GFX_NOT_DEFINED /* RST */, TL021WVC02_init_operations, sizeof(TL021WVC02_init_operations));
// 2.8" 480x480 round display
// 480 /* width */, 480 /* height */, &rgbpanel, 0 /* rotation */, true /* auto_flush */,
// &expander, GFX_NOT_DEFINED /* RST */, TL028WVC01_init_operations, sizeof(TL028WVC01_init_operations));
// 4.0" 720x720 round display
720 /* width */, 720 /* height */, &rgbpanel, 0 /* rotation */, true /* auto_flush */,
&expander, GFX_NOT_DEFINED /* RST */, hd40015c40_init_operations, sizeof(hd40015c40_init_operations));
// needs also the rgbpanel to have these pulse/sync values:
// 1 /* hync_polarity */, 46 /* hsync_front_porch */, 2 /* hsync_pulse_width */, 44 /* hsync_back_porch */,
// 1 /* vsync_polarity */, 50 /* vsync_front_porch */, 16 /* vsync_pulse_width */, 16 /* vsync_back_porch */
Adafruit_Monster_Eyes eyes(&gfx, EYE_SCALE);
void setup() {
Serial.begin(115200);
eyes.setVerbose(Serial);
Wire.setClock(1000000);
if (!eyes.begin()) {
Serial.print("Monster Eyes failed: ");
Serial.println(eyes.errorString());
while (1)
delay(1000);
}
expander.pinMode(PCA_TFT_BACKLIGHT, OUTPUT);
expander.digitalWrite(PCA_TFT_BACKLIGHT, HIGH);
}
void loop() {
eyes.animate();
static uint32_t last = 0;
if (millis() - last >= 1000) {
last = millis();
Serial.printf("%.0f fps\n", eyes.frameRate());
}
}
Page last edited September 23, 2026
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