Building a (also known as an Oscilloscope Clock ) is a complex but rewarding project that repurposes vintage Cathode Ray Tubes to display time. Unlike standard digital clocks, these use vector graphics to "draw" clock faces directly on a phosphor screen. Core Circuit Modules
Vector Graphic Display: Unlike modern pixel-based screens, a CRT clock draws images by steering a beam in "XY mode." Schematics often use two DAC (Digital-to-Analog Converter) channels from a microcontroller to provide X and Y coordinates. Crt Clock Schematic
Keep in mind that this is a highly simplified schematic, and actual CRT clock circuits may be more complex, with additional components and adjustments. Building a (also known as an Oscilloscope Clock
void drawVector(int x, int y, bool draw) digitalWrite(Z_AXIS, draw); // Turn beam on/off delayMicroseconds(2); // Settling time analogWrite(X_DAC, x); analogWrite(Y_DAC, y); delayMicroseconds(20); // Deflection speed Keep in mind that this is a highly