PicoDVI Eyes
There's so many great projects that use DVI output on the RP2 boards and now you can add Monster Eyes to that list! The ubiquity of PicoDVI also means there's a lot of hardware options.
PiCowbell
There are the PiCowbell breakouts. Make sure you get the one that matches your Pico! This version is for the Pico RP2040:
Whereas this one is for the Pico RP2350:
HSTX to DVI
And if you have a Feather or Metro RP2350, you can use the HSTX to DVI adapter breakout:
Pin Defines
The PicoDVI library has predefined pin definitions for these hardware combinations. You can use these pin definitions at the top of your code, just like you would with other sketches that use the PicoDVI library.
#if defined(ARDUINO_ADAFRUIT_FEATHER_RP2040_DVI)
#define DVI_PIN_CONFIG adafruit_feather_dvi_cfg
#else
#define DVI_PIN_CONFIG adafruit_dvibell_cfg // PiCowbell DVI;
// pico_sock_cfg // Pico DVI Sock
// pimoroni_demo_hdmi_cfg // Pimoroni Pico DV
#endif
DVIGFX16 dvi(DVI_RES_320x240p60, DVI_PIN_CONFIG);
Example Code
After installing the Monster Eyes library, you can use the example below for DVI output.
// Adafruit Monster Eyes -- one eye over PicoDVI
//
// Eye appearance comes from config.eye and BMP files on the CIRCUITPY drive.
#include <Adafruit_Monster_Eyes.h>
#include <PicoDVI.h>
#if defined(ARDUINO_ADAFRUIT_FEATHER_RP2040_DVI)
#define DVI_PIN_CONFIG adafruit_feather_dvi_cfg
#else
#define DVI_PIN_CONFIG adafruit_dvibell_cfg // PiCowbell DVI;
// pico_sock_cfg // Pico DVI Sock
// pimoroni_demo_hdmi_cfg // Pimoroni Pico DV
#endif
DVIGFX16 dvi(DVI_RES_320x240p60, DVI_PIN_CONFIG);
Adafruit_Monster_Eyes eyes(&dvi, 1);
void setup() {
Serial.begin(115200);
// eyes.setVerbose(Serial); // debug
if (eyes.driveModeRequested()) {
eyes.runDriveMode();
}
eyes.setDriveModeEnabled(false);
if (!eyes.begin()) {
Serial.print("Monster Eyes failed: ");
Serial.println(eyes.errorString());
while (1)
delay(1000);
}
}
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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