Connecting the Switch To connect the switch to the Arduino, you will need the switch, two jumper wires, and a 10kΩ (brown-black-orange) resistor. Once you have all the required parts, you will need to wire the switch to the Arduino using the breadboard. NOTE: The virtual board may be slightly different from the physical one. This
Making a program start using a switch using Arduino Read More »
Quit pulling your hair out over incorrect passwords. Using an Arduino Leonardo and Adafruit’s NFC shield, you can unlock your computer with an NFC card. The Arduino reads the NFC card’s unique identifier and once it receives the correct one, it uses the Arduino Leonardo’s keyboard emulation feature to type a password. Step 1: Parts
NFC Computer Unlocker Using Arduino Read More »
Tired of having to find the dog food to feed the dog? Tired of having to get up early so your dog doesn’t attack you for his food? Are just plain lazy? If you answered yes to any of these questions, this instructable is for you. Powered by the intelligent Arduino, this gadget will automatically
Dogduino:The Automatic Dog Feeder using Arduino Read More »
Overview The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support
Programming the Arduino I/O pins Read More »
Overview A software / hardware combo that allows for control of the analog filter inside a Commodore 64 that is running Cynthcart from a host computer (eg, Macbok, PC). Software • 16-step filter sequencer • Set the speed of the filter sequence (with intervals between values reaching 2ms) • Set the length of the sequence from 1
Programmable auto filter interface for C64 using Arduino Read More »
If you want to RESET Arduino from the beginning without manually pressing the RESET button, there are a few ways. Here are two ways, using minimal wiring / circuitry. Step 1: Using 1 wire connected to the RESET pin 1. electronically, using only 1 wire connecting an OUTPUT pin (12 in this example) to the
Two ways to reset arduino in software Read More »
In this write-up, I’ll show how to create a value in Processing and then send this value over the serial port to the Arduino. In the example I’m setting values of LEDs making them brighter or dimmed but this example can be extended to control other items – which I plan to do later! Basically I’m going to set a value between 0 and 255
Using Processing to Send Values using the Serial Port to Arduino Read More »
Today, I made a small 3x3x3 LED cube with an ATtiny2313 that I had from about 2 weeks ago. Whenever I had to reprogram the LED cube when I thought of more awesome patterns, I had to get out my breadboard and then wire up everything again referring to pin-outs of ATtiny2313 and make sure
Arduino ATtiny2313 Programming Shield Read More »
My kids are learning Morse code this summer, so I threw together this little circuit to help them learn. And to make it more fun… It uses an ATtiny85 ($2.26 at digikey.com) to drive a piezo beeper (≈ $3.50 at Radio Shack.) The ATtiny85 takes 5.5V max, so I built the circuit on a piece
Morse-Code Trainer Using Arduino Read More »
I’ve found several sites and posts explaining how to use a quadrature encoder with an Arduino, but wasn’t completely satisfied with any of the methods used. Perhaps part of the problem is with the encoder I’m using: it’s part #COM-09117 at Sparkfun.com. This encoder has twelve detents per rotation, and each detent covers one complete cycle
Using a quadrature encoder (rotary switch) with Arduino Read More »
