
Arduino Blink LED Tutorial
by Lewis Loflin
The Arduino test program 'blink' uses 580 bytes. The video discusses alternative programming methods to make better use of resources.
- Arduino Nano Test Template
- Arduino Solid State Relay Motor Enable Control
- Arduino Blink LED Tutorial
- Arduino SSR Power Enable Program
- SSR Based High Voltage H-Bridge
- Arduino H-Bridge Motor Control Program with LCD Display
- Arduino XOR Blinks LED
- Arduino IF Statement Code Examples
- Arduino Motor Control Program Using IF
- Related:
- Arduino Port Registers Revisited
- LM317 High Power Constant Current Source Circuit
- LM317 Adjustable Voltage Source Current Boost
- Build a Transistor H-Bridge Motor Control
- H-Bridge Motor Control with Power MOSFETS

/* DDR - data direction register 0 = INPUT; 1 = OUTPUT PORTB - port B data register 0 = 0V; 1 = 5V 0b00000000 PB7 to PB0 PB0 = DP8 PB1 = DP9 PB2 = DP10 PB3 = DP11 PB4 = DP12 PB5 = DP13 PB6 & PB7 = crystal */
#define L1 9 // DP9 or PB1 // empty setup and loop 450 bytes void setup() { // DDRB = DDRB | 0b00000010; // 2 bytes // DDRB = 0b00000010; // 4 bytes // DDRB = 2; // same as above 4 bytes // pinMode(L1, OUTPUT); // 180 bytes // OUTPUT = 1, INPUT = 0 // pinMode(L1, 1); // 180 bytes } byte num = 0; // 8-bit unsigned 0-255 void loop() { // num = num ^ 1; // 12 bytes // num = !num; // 14 bytes // PORTB = PORTB ^ 0b00000010; // 8 bytes // PORTB = PORTB ^ 2; // 8 bytes // read IO register directly // num = digitalRead(L1); // num = !num // num = digitalRead(L1) ^ 1; // num = !digitalRead(L1); // digitalWrite(L1, num); // 268 bytes once // digitalWrite(L1, num = !num); // 278 bytes // delay(500); // 162 bytes once // myDelay(500); // 64 bytes once // digitalWrite(L1, num); // 10 bytes // delay(500); // 12 bytes // myDelay(500); // 8 bytes } // x * 1mS delay 64 bytes // unsigned int 2 bytes // 2^16 - 1 = 65,535 // unsigned long 4 bytes // 2^32 - 1 = 4,294,967,295 // milliSec. delay 64 bytes void myDelay(unsigned int x) { for (unsigned int y = 0; y <= x; y++) { delayMicroseconds(1000); } }
- Related:
- Optocoupler MOSFET DC Relays Using Photovoltaic drivers
- Connecting Crydom MOSFET Solid State Relays
- Optical Isolation of H-Bridge Motor Controls
- Arduino Projects Revisited Revised
- Schematic for Following Projects
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- Arduino uses ADS1115 with TMP37 to Measure Temperature
- Connect Arduino to I2C Liquid Crystal Display
- Arduino Reads Temperature Sensor Displays Temperature on LCD Display
- Arduino with MCP4725 12-bit Digital-to-Analog Converter Demo
- Videos
- Arduino with ADS1115 4-Channel 16-bit Analog-to-Digital Converter
- Arduino with MCP4725 12-Bit DAC
Videos:
My YouTube Videos on Electronics
Introduction to the Arduino Microcontroller
Part 1: Programming Arduino Output
Part 2: Programming Arduino Input
Part 3: Arduino Analog to Digital Conversion
Part 4: Using Arduino Pulse-Width-Modulation
Repost Arduino AC Power Control
- Comparator Theory Circuits Tutorial
- Constant Current Circuits with the LM334
- LM334 CCS Circuits with Thermistors, Photocells
- LM317 Constant Current Source Circuits
- TA8050P H-Bridge Motor Control
- All NPN Transistor H-Bridge Motor Control
- Basic Triacs and SCRs