Posts tagged ATmega328
DIY Arduino Board
DIY Arduino Board

A DIY Arduino board is presented here, with most of the capabilities of the classic Arduino Uno board, but with a slimmer profile and more flexibility in hardware. The advantage to using the DIY Arduino board is its ability to change the input voltage (2.7V - 5.5V), the crystal oscillator (0-16MHz), and the use of LEDs and regulators when needed. The DIY board is capable of very lower power modes, without the requirement of draining components such as LEDs or regulators. The ATmega328P chip is at the center of every Uno board (in recent years), and is also at the center of the DIY board, which allows the DIY Arduino to behave almost identically to the Uno board.

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Arduino, ElectronicsJoshua HriskoArduino, Arduino DIY, DIY, DIY Arduino, 16 MHz, Quartz Crystal, Quartz Crystal Oscillator, Crystal, Crystal Oscillator, Arduino Uno, Arduino DIY Boar, Arduino DIY Board, ATmega, ATmega328P, ATmega328, ATmega328p, 22pf, 22pf Capacitor, Capacitor, RGB, RGB LED, LED, PWM, Pulse-Width Modulation, Wiring, Arduino Wiring, Arduino PWM, Breadboard, Breadboard Arduino, Arduino Minimal, DIY Arduino Board, Multimeter, Arduino Power Consumption, Arduino Power, Arduino CurrentComment
Arduino Interrupts with PIR Motion Sensor
Arduino Interrupts with PIR Motion Sensor

The basics of Arduino’s hardware interrupt is explored through the use of a passive infrared (PIR) sensor. The passive infrared sensors used here operate at voltages from 2.7V - 5V and use very little energy when operating in the non-tripped state. The PIR sensor is ultimately tripped by an infrared source, typically human body heat (or another animal with similar radiative emission). When the PIR sensor is tripped it sends a HIGH signal to its OUT pin, which will be read by the Arduino’s interrupt pin (pin 2 or 3 on the Uno board). This process seems trivial, but when done correctly can save massive amounts of energy when dealing with battery-powered systems, as in home automation.

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Arduino, ElectronicsJoshua HriskoPIR, passive, passive infrared, PIR sensor, Sensor, IR Sensor, Infrared, LED, Arduino, Arduino IoT, Arduino LED, Arduino PIR, Arduino Sensor, Arduino Interrupt, Interrupt, Arduino IDE, Resistor, Arduino Uno, Arduino Low Power, Low Power, Arduino LowPower, Arduino Wiring, VCC, ATmega, ATmega328, ATmega328P, Power Consumption, Arduino Power Consumption, Arduino Power, RISING, FALLING, CHANGE, attachInterrupt, Arduino attachInterrupt Comment
Arduino Internet of Things Part 2: Lowering The Power Consumption Of The ATmega328P Breadboard Arduino And The HM-10 Bluetooth Module
Arduino Internet of Things Part 2: Lowering The Power Consumption Of The ATmega328P Breadboard Arduino And The HM-10 Bluetooth Module
Bluetooth, Arduino, Programming, Editor's PicksJoshua HriskoInternet of Things, Arduino, ATmega328, Breadboard, ATmega, Amazon, Bluetooth, Web, Chip, code, DHT22, DIY, Adafruit, GitHub, humidity, Sketch, loop, Open-Source, IoT, parse, Quartz Crystal, Multimeter, temperature, Upload, Wiring, Crystal Oscillator, Arduino Internet of Things, BLE, Arduino BLE Comment