Arduino Projects

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Which Arduino Do You Need for Your Project?

The Arduino project has come a long way in only a few years. It started out with just a single simple board that offered basic features and did not have a USB connector. You can now find over a dozen Arduino [more…]

What You Need for an Arduino Clock Project

If you want to keep accurate time on an Arduino project, you need a real-time clock of some kind. The Arduino can keep track of time very accurately by using the [more…]

How to Assemble the RTC module for Your Arduino Clock Project

Assembling the RTC module for the Arduino Clock Project is fairly simple, if you have some experience soldering. If not, it’s a good opportunity to practice your skills. After the kit is assembled, you [more…]

How to Add and Test the LCD Display for Your Arduino Clock Project

Once you’ve programmed and tested the beating heart of your Arduino clock, you need a way to display the time without using the serial monitor. This is where the LCD display comes in. [more…]

How to Display the Time for Your Arduino Clock Project

Once you’ve got something on the display for your Arduino Clock Project, it’s time to read the time from the RTC module and display it. Later, you add buttons to program the alarm, and a switch to change [more…]

How to Add a Switch and Input Buttons to Your Arduino Clock Project

For your Arduino Clock Project, you first add one of the pushbutton switches and one of the resistors, which you use as an input to increment the alarm hours. The pushbutton works by allowing +5V to be [more…]

How to Add an Alarm to Your Arduino Clock Project

Adding an alarm is the easiest hardware modification for your Arduino Clock Project. You only need to attach the piezoelectric sounder. With that added, you simply create a function to play the alarm. [more…]

What You Need for a Keypad Entry System Arduino Project

No self-respecting mastermind would leave his fortress unsecured against intruders. These Arduino project steps guide you through building a keypad entry system that unlocks a door when you enter the correct [more…]

How to Prototype a Keypad and Display for Your Keypad Entry System Arduino Project

This Arduino project has a lot of connections, so it’s a good idea to prototype it first using a breadboard. After you’ve built and tested your prototype, you can then install the breadboard into an enclosure [more…]

How to Declare Variables to Code the Keypad for Your Keypad Entry System Arduino Project

Once you’ve got the keypad and display components in place on your breadboard, it’s time to load up the code to your Arduino. Take a moment to look at the code and then upload it to your board. [more…]

How to Define the Setup for Your Keypad Entry System Arduino Project

After you have put all the pieves together for your Arduino Keypad Entry System Project, you need to define the setup. In the setup() section of your code, you prepare the Arduino to run this sketch. [more…]

How to Run the Main Loop for Your Keypad Entry System Arduino Project

You will need to run a main loop for your keypad entry system Arduino project. There are only a few things the code does to operate your entry system. The main loop operates as follows: [more…]

How to Specify User-Defined Functions for Your Keypad Entry System Arduino Project

The final part of the code for your keypad entry system Arduino project contains four functions that handle identifying the key pressed, sending commands to the Max chip, clearing the display, and activating [more…]

How to Add and Test the Relay for Your Keypad Entry System Arduino Project

Once the code has been added to your Arduino, you now need to add the relay that controls the door mechanism and the power supply. You use the same power supply to operate your Arduino, because it won’t [more…]

How to Assemble and Install Your Keypad Entry System Arduino Project

When you put the keypad entry system Arduino project into the enclosure, you might want to transfer the circuit to a half-size breadboard that takes up less space and accommodates the Max72xx driver, transistor [more…]

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