Ultrasonic Sensor (HC-SR04) Arduino Basic Example

The following tutorial will show you the bare minimum code required to use an ultrasonic sensor (HC-SR04) with arduino. In this tutorial the measured value will be shown in the serial monitor in “cm”. Ultrasonic distance measurements comes for the nature. It is based on the time travelled by a source of sound reflected from …

Arduino Debugging – Plot vairables using VisualMicro

VisualMicro is an Arduino IDE for Visual Studio. It can use all of the advantages of visual studio to write arduino programs, solutions, compile it and upload them to any Ardunio compatible boards. This IDE is a free to use extension from the Visual studio marketplace. Easy to download and install it, it really takes …

Arudino Uno – DHT11 Temperature, Humidity sensor

DHT11 is a very low cost digital temperature and humidity sensor. It contains a capacitive humidity sensor and a thermistor to measure the surround air. The sensor uses a digital pin. The digital pin uses a pullup resistor. This resistor is needed if the sensor itself does not contains it. Compared to the DHT22 this …

Arduino Lilypad – Specifications & PINOUT

The Arduino Lilypad is designed for wearable projects. Attached to e-textiles, sewn and fabric to power supplies, sensors and actuators with conductive threads. Wearable IOT projects. Specifications Microcontroller Type ATmega168 or ATmega328V Operating voltage 2,7-5,5V Digital Pins 14 (6 of them PWM enbaled) Analog PINS 6 DC current maximum 20mA for I/O pins, 50mA for …

Arduino Nano – Specifications & PINOUT

The Arduino Nano is the smallest Arduino available with a form factor of 45x18mm. It is recommended for projects with easy to use and small microcontrollers. Small size and low prices makes it popular. Specifications Microcontroller Type ATmega328 Operating voltage 5V Digital Pins 22 (6 of them PWM enbaled) Analog PINS 8 DC current maximum …

Arduino MEGA 2560 – Specifications & PINOUT

The Arduino MEGA 2560 is used for project with high I/O number requirements and more flash memory with RAM. 54 Digital Input/Output Port with 16 Analog Inputs gives you enough space for projects like robotics or 3D printing. Specifications Microcontroller Type ATmega2560 Operating voltage 5V minimum, 7-12V recommended Digital Pins 54 (15 of them PWM …

Arduino UNO – Specifications & PINOUT

The Arduino UNO is one of the favourite choice for Arduino projects. It has the most common type and number of ports needed for most of the basic electornic diy projects. This board is the most used and has the largest community with well documented libraries and projects. Specifications Microcontroller Type ATmega328P Operating voltage 5V …

Send DHT11 temperature/humidity data using MQTT

The following tutorial show you how you can send temperature and humidity data measured by DHT11 sensor connected to a nodeMCU / ESP8266 board with MQTT message. The messages are displayed in the WEB MQTT interactive MQTT web client dashboard with the gauge and chart UI elements. https://rundebugrepeat.com/webmqtt/ The following DHT11 library used: https://github.com/adafruit/DHT-sensor-library Source …