If you want use two Arduino, you can use a simple I/O port to communicate. The point of question is the Ground.
by Giovanni Gentile
Connect Infrared Obstacle Avoidance Sensor to Arduino Nano and program it to detect obstacles - Quick and Easy!
by Boian Mitov
This is my 4th tutorial on how to drive a RELAY (not a relay module) with an Arduino.
This exoskeleton was designed to help a patient suffering from paralysis to rehabilitate faster.
This combines a two-axis joystick, a three-axis accelerometer, and two buttons into one package.
In this tutorial, I am going to talk about the PCF8574 8-bit GPIO port extender.
Brought to the marked in 1976, Zilog's Z80 was the most widespread processor in the '80s until the 2000s. Let's bring it to life again!
by Doctor Volt
Learn how to read Accelerometer Sensor on Arduino 101 and show tilt status on LED.
by Jefferson Paredes
A smart pollution control device is set near the exhaust of the vehicle to alert the user when they are wasting fuel and causing pollution
Arduino clock, easy to assemble, you can set the date and time by the Serial monitor
by Vinicius Lopes
Sending temperature and humidity from Arduino MKR1000 to Artik Cloud
by Team MAKERS-NS
Controlling Home Lights using Facebook Chat messages with the help of Arduino, ESP8266 WiFi and a relay board.
by Team IoTBoys
This project can perform a number of tasks simultaneously while being monitored through serial port on your computer or on your mobile.
by Hassan Shettima Lawan
Connect multiple OneWire Maxim DS1820/DS18S20/DS18B20 thermometers to Arduino, and program it to measure the temperatures - Quick and Easy!
Learn how to read Gyroscope Sensor on Arduino 101 and show tilt status on LED.
Building a rain sensing alarm with Arduino.
by Smit Babariya
My project is a piano of four sounds that uses things that we find at home, bananas.
A standard speaker can be used to detect vibrations and send data to a microcontroller.
One port to role them all.
by Tal O
If you ever have watched knight rider you will remember K.I.T.T and his Scanner, we will replicate this using 6 Neopixels.
by Austin Detzel
Using the built-in Arduino EEPROM to save and restore values - Quick and Easy.
eDOT core is a versatile Arduino board with built-in precision RTC.
Sometimes you need to generate a analog signal from a digital source a DAC or a digital to analog converter helps you do this.
by Vimanse Dissanayake and Chathura Yapa Bandara
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