Arduino Projects

Added: June 19, 2024 Stack animation using the 74HC595 Shift Register (Rev 1)


Arduino sketch for microcontroller const int dataPin = 0; // Pin 14 74HC595 (SER) const int latchPin = 1; // Pin 12 74HC595 (RCLK) const int clockPin = 2; // Pin 11 74HC595 (SRCLK) byte Mask1 = 128, Mask2 = 0, Combined, idx1 = 8, idx2 = 8; void setup() { pinMode(dataPin, OUTPUT); pinMode(clockPin, OUTPUT); pinMode(latchPin, OUTPUT); } void loop() { // Stack animation Combined = (Mask1 \| Mask2); digitalWrite(latchPin, LOW); shiftOut(dataPin, clockPin, MSBFIRST, Combined); digitalWrite(latchPin, HIGH); Mask1 = (Mask1 >> 1); if (!--idx2) { Mask2 = Combined; if (!--idx1) { idx1 = 8; idx2 = idx1; Mask2 = 0; } else idx2 = idx1; Mask1 = 128; } delay(100); }		Schematic (click to enlarge)

Sample animation

Added: June 20, 2024 Stack animation using the 74HC595 Shift Register with PWM (Rev 2)


Arduino sketch for microcontroller const int dataPin = 0; // Pin 14 74HC595 (SER) const int latchPin = 1; // Pin 12 74HC595 (RCLK) const int clockPin = 2; // Pin 11 74HC595 (SRCLK) const int outputEnablePin = 4; // Pin 13 74HC595 (OE) const byte brightnessGradient[] = {224,192,160,128,96,80,64,48,40,32,24,16,8,7,6,5,4,3,2,1,0}; byte Mask1 = 128, Mask2 = 0, Combined, idx1 = 8, idx2 = 8; void setup() { pinMode(dataPin, OUTPUT); pinMode(clockPin, OUTPUT); pinMode(latchPin, OUTPUT); pinMode(outputEnablePin, OUTPUT); setBrightness(255); } void loop() { // Stack animation Combined = (Mask1 \| Mask2); updateShiftRegister(); Mask1 = (Mask1 >> 1); if (!--idx2) { Mask2 = Combined; if (!--idx1) { idx1 = 8; idx2 = idx1; Mask2 = 0; delay(500); for (int i = 0; i < sizeof(brightnessGradient); i++) { setBrightness(brightnessGradient[i]); delay(100); } Combined = 0; updateShiftRegister(); setBrightness(255); delay(1000); } else idx2 = idx1; Mask1 = 128; } delay(100); } void updateShiftRegister() { digitalWrite(latchPin, LOW); shiftOut(dataPin, clockPin, MSBFIRST, Combined); digitalWrite(latchPin, HIGH); } void setBrightness(byte brightness) { analogWrite(outputEnablePin, 255-brightness); }		Schematic (click to enlarge)

Sample animation