Posts tagged Arduino Sensor
MPS20N0040D Pressure Sensor Calibration with Arduino
MPS20N0040D Pressure Sensor Calibration with Arduino

Pressure is defined as an evenly distributed force acting over a surface with a given area. The accurate measurement of pressure is essential for applications ranging from material testing to weighing scales, aircraft altitude prediction, and evaluating biological functions in humans relating to respiration and blood flow In this tutorial, a digital pressure transducer and analog pressure manometer will be used to measure gauge pressure - where the analog manometer is used as the calibration tool for the digital pressure sensor. Arduino will be used to read the digital pressure transducer, an MPS20N0040D, and a 3D printed manometer will be used to measure analog pressure manually.

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Engineering, ArduinoJoshua HriskoMPS20N0040D, Pressure, Pressure Sensor, Gauge Pressure, 2.5mm, Tubing, Calibration, Arduino, Arduino Calibration, Arduino Pressure, Arduino Pressure Sensor, Sensor, Engineering, Engineer, Mechanical Engineering, Fluid, Fluid Mechanics, Arduino Fluids, Arduino Air, Arduino Sensor, Breadboard, Gravity, Data, Analysis, Data Analysis, U-Tube Manometer, Manometer, U-Tube, Bernoulli, Force, Transducer, Most Popular 2021, Most Popular 2020 Comments
Arduino Optical Fingerprint Sensor (AS608)
Arduino Optical Fingerprint Sensor (AS608)

Optical fingerprint sensors take low-resolution snapshots of the tip of a finger and create arrays of identifiers that are then used to uniquely identify a given fingerprint. The AS608 is capable of storing up to 128 individual fingerprints. This tutorial will introduce the AS608 Arduino-compatible fingerprint sensor and how to validate and reject fingerprints based on the enrolled fingerprint information that will be given to the sensor. The fingerprint algorithm is handled by the AS608 and Arduino, so this tutorial will focus on implementation and putting the pieces together to make a working fingerprint sensor with Arduino.

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Arduino, ElectronicsJoshua HriskoFingerprint, Fingerprint Module, Fingerprint Arduino, Arduino, Arduino Sensor, Arduino Fingerprint, Arduino Module, Arduino LED, Arduino Resistor, AS608, Fingerprint Identification, Arduino Finger, Arduino Fingerprint Identification, Adafruit, Adafruit Fingerprint, Arduino Board, Arduino Uno, Breadboard, LED, LEDs, Sensor, Library, Enroll, Fingerprint IDComment
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 Comments
Arduino Thermistor Theory, Calibration, and Experiment
Arduino Thermistor Theory, Calibration, and Experiment

Thermistor, whose name is derived from a combination of thermal and resistor, is a temperature sensing device that registers changes in internal resistance as a function of temperature. Thermistors are often chosen over thermocouples because they are more accurate, have a shorter response time, and are generally cheaper. For most applications, thermistors are the smart and easy selection for temperature sensing below 300 degrees Celsius. In our case, we will be using a Negative Temperature Coefficient (NTC) thermistor, where the resistance decreases as the temperature increases. NTC thermistors are most common in commercial products that operate in the tens of degrees like thermostats, toasters, and even 3-D printers. An NTC 3950 100k thermistor will be used, which is designed for 100kOhm resistance at 25 degrees Celsius. This tutorial will introduce methods for relating resistance to temperature by fitting factory calibration data. The performance of the thermistor will also be evaluated using an Arduino board and a simple Newton’s law of cooling experiment.

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Arduino, Data Analysis, Engineering, Programming, PythonJoshua HriskoSeinhart-Hart, Thermistor, NTC, NTC 3950, NTC 3950 100k, NTC 100k, Arduino Thermistor, Thermistor Equation, Arduino Fit, Arduino Curve, Thermistor Fit, Thermistor Data, Thermistor DHT22, DHT22, Arduino DHT22, Arduino Sensor, Sensor, Voltage, Voltage Divider, Resistance, Resistor, Python, Python Fit, Python Curve Fit, Python Scipy, Thermistor Experiment, Thermistor Project, Arduino Experiment, Arduino Project, CapacitorComment
Capacitive Touch Sensor with Arduino
Capacitive Touch Sensor with Arduino

Capacitive sensing from human touch. Create a switch without any moving parts with an Arduino board and an inexpensive capacitive touch sensor.

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Arduino, ElectronicsJoshua HriskoCapacitive Touch, Capacitive, Arduino Capacitive Touch, Arduino Experiment, Arduino IDE, Arduino Sensor, Arduino Capacitive, Arduino Capacitive Sensor, Arduino Touch Sensor, Arduino Touch, Arduino Project, Arduino Uno, Arduino Wiring, Analog, Analog Read, Arduino Serial, Arduino Digital, Arduino Digital Write, Arduino LED, ENGR101, Capacitive Touch Sensor, Arduino Tutorial, Arduino Touch Tutorial, Arduino Capacitive Tutorial, Capacitive Touch Tutorial, Capacitive Arduino, Capacitive Touch Arduino, Sensor Comments