There are lots of people who are very comfortable with the Scratch programming environment but want to try something with Arduino to Blink Lights, Sense Buttons, Run Servos or whatever. They may find the C programming environment in Arduino IDE – Sketch, a bit too much of a step. This instructable draws on the work
A Gentle Introduction to Arduino for Scratch Users Continue Reading
In this week’s arduino tutorial, we take a bit of a detour and focus on some key elements of electrical engineering design that we’ll be using in future episodes. Included amongst these topics is Ohm’s Law, current-limiting resistors, pull-down and pull-up resistors, voltage dividers, potentiometers, analog inputs, and voltage regulators. If you’re yearning to learn
Arduino: Electrical Engineering Basics Continue Reading
As promised, this week brings another communications tutorial! In this video, we’ll use both the serial and processing knowledge that we gained last week, plus an I2C enabled temperature-sensing IC. We’ll use processing to generate a pretty room temperature display on your computer screen. If you are new to processing, they have an excellent
Arduino I2C and Processing Continue Reading
Interrupts are an extremely useful, yet often feared element of microprocessors. Interrupts allow you to run a program, while still being able to react to asynchronous input from the outside world. On many platforms they can be confusing to implement, but the arduino makes it easy! In this week’s episode, I’ll show you how to use
Arduino Interrupts and Debouncing Continue Reading
These two chips provide an easy way to control either an array of 64 Led’s or up to eight digits made of 7-segment displays with a minimum of electronic components. Besides the chip itself you will need only a single resistor and one or two capacitors. Data is send to the chip using a SPI-compatible
A arduino library for the MAX7221 and MAX7219 Continue Reading
One of the frustrating things about developing and debugging electronic circuits is that you can’t look inside the circuit to see what is happening. Even with a circuit laid out before you on a workbench and powered up it may seem like you’re in the dark, unable to figure out why an input change or
Oscilloscope / Logic Analyzer using Arduino Continue Reading
This is an introduction on how to setup, make a basic connection, and send data to and from an Arduino using Bluetooth! Bluetooth is great for transmitting data over medium distances and what’s more, Arduino just treats it like a serial data connection. This means that we can use the Serial Library. That’s a nice
Arduino Bluetooth Serial Connections Continue Reading
Can a microcontroller control its own power? Well nearly! An ATX power supply, either new or from an old PC, is a great way to power Arduino and other microcontroller projects. That is covered in several ‘ibles such as this one. However, because of some of the special features of an ATX, we can use
Arduino Controlled ATX Power Supply Continue Reading
I recently had the idea to create a catapult, But not just any kind of catapult, an electronic catapult! I wanted something I could just sit it down hit some buttons and watch it do its thing without being to big. This is what I came up with: It is a little bigger than what
Arduino Controlled Catapult Continue Reading
This time I’ll show how I used an Arduino to control a relay module with eight channels. Arduino in offers several advantages such as: – Open source; – Easy programming; – You can assemble your own board; – Is supported on various forums on the Internet; – Has several “shields” (facilitates the use of it
Larson Scanner with Relay Module using Arduino Continue Reading
Free Arduino projects, circuits, code and tutorials. Pick a board, pick a sensor, build something.
