This electronic dashboard for a bicycle uses an Arduino and a few other parts to create a light control system and an LED speedometer. It is powered with eight 1.5V batteries connected in series. Six LEDs on the dashboard indicates how fast are you going on your bicycle.
Bicycle dashboard
This garage door opener built around the parts mostly available from Sparkfun uses the fingerprint scanning mechanism to open the door.
Garage door opener with fingerprint scanner
As a person without a car, I don’t need to carry keys around everywhere I go. Because of this, I’ve been locked out of my own house several times. It’s a pain to wait for someone with a key, so I thought I would do something about it.
This project is my way of solving this problem, while getting the chance to interface with an awesome fingerprint scanner (aka: FPS).
Also, this module isn’t restricted to just garage doors, for you can create different kinds of simple motorized locks to suit your needs.
Nick Lim has posted a new project on building a simple Arduino Nano driven Tetris using two Bi-color LED Matrix Driver Modules that he has designed and is currently selling on his Tindie store named jollyFactory. These display modules use two MAX7219 chip for driving a bi-color 8×8 LED matrix and are chain-able to expand the size of the LED matrix display as required in your project. Four push switches are used in this project to provide an user interface for navigating and rotating the Tetris blocks. An 8 Ohm speaker is also used in the project to generate an audio tone during the play.
Arduino Tetris game
This instructable describes a project named Duinocade, a mini pong arcade game based on the open source handheld Gamebunio, and which uses Atmega328 as the controller and Nokia 5510 LCD for display screen.
Duinocade: Arduino-based pong arcade
The hardware of the project
In this instructable, a 15 year old kid Angelo describes a homebrew USB condenser microphone for recording quality audio at home. His project uses an USB soundcard (DAC), a transistor preamp circuit, and two microphones, all enclosed inside an Altoids tin box. The resulting setup has cardioid pickup pattern, smooth frequency response and 16-bit output, and 44.1/48kHz resolution, which gives you professional audio results under the budget of $10.
Homebrew USB microphone