luca @ lucadentella.it build a nice app that let you configure an RTC chip using a PC GUI and your Arduino board. The system is composed by two elements, the PC GUI written in C# and a sketch running on Arduino. The RTC is connected on the Arduino using I2C interface and Arduino is connected to PC using a simple serial protocol.
I chose to use the Adafruit’s RTClib library to talk with the DS1307 chip, that is for sure one of the most used RTC in the hobbistic world. The connection between the IC and Arduino is established using the I2C bus.
RTCSetup – configure an RTC chip using your PC - [Link]
An incredibly small board at your fingertip: raising funds on Indiegogo!
A 100% Arduino IDE compatible, 32KB USB development board small enough to fit on your fingertips and cheap enough to leave in any project.
Having used several development boards over the years we soon realized that most of them are designed to be used for a single purpose. Having hacked some to increase functionality, we reasoned that not all boards would easily allow this and soon realized the need for boards which are feature rich, cost effective, yet easy to use and deploy in numerous applications. We set out to design such boards and this is where it has led us, our first pit-stop: The µ-nex.
The u-nex is a very compact Arduino compatible board designed around the Atmega328p micro-controller. It features 32KB of flash memory with ALL the micro-controller pins being brought out to enable you to build just about anything you would want to build with an 8-bit micro-controller from autonomous flying vehicles to LED cubes. Designed from the ground up to give you maximum possible versatility.
U-nex – a Arduino compatible, 32KB USB development board for $9, on Indiegogo - [Link]
A tutorial on interfacing LCDs (liquid crystal displays) with Arduino. We take a look at libraries and the role they play…and the potential issues, errors and troubleshooting involved.
We look at several types of displays but concentrate on the 4×20 Sparkfun serial enabled LCD display.
Arduino Tutorial #4 – LCD displays, Libraries and Troubleshooting - [Link]
This instructable illustrates a simple circuit to play wav sound files stored in an SD card using arduino Nano V3.0. [via]
Playing WAV sound files with Arduino - [Link]
Audigi @ instructables.com show us how to use an Arduino board to burn Arduino bootloader to mcus on a breadboard. He writes:
Connect Arduino Uno board to your computer. Start Arduino program and from examples choose “ArduinoISP” sketch and upload it to “Arduino Uno” board. Please make sure you select the correct board name and serial port. Now this board is ready to program new Atmega-328 chips on the breadboard as shown in the next step.
Burn Arduino Bootloader on Atmega-328 TQFP and DIP chips on Breadboard - [Link]
Julian Ilett show us how to program the Pro Mini Arduino using a simple USB to Serial adapter. Three USB to Serial adapter are tested here. He writes:
Here I attempt to use 3 different USB to Serial modules to program a clone Arduino Pro Mini. The chips are the FTDI FT232RL, the Silicon Labs CP2102 and the Prolific Technologies PL2032HX.
Arduino USB-to-Serial Tutorial – Programming the Pro Mini - [Link]
This is a great credit card sized business card and gaming console based on Arduino.
The primary trick of this design is having milled cutouts made for surface mount components to be press fit into, using the circuit board as a kind of frame. Components selected have a thickness near that of the circuit board (1.6mm). Furthermore, to minimize the board thickness, the Atmega328P is inverted so that the bulk of its height below the surface. The result of equal thickness and recessed installation provides a flush appearance. The primary benefit beyond the aesthetic quality is the device is easily slid from a wallet. The high quality boards and the excellent service from oshpark also makes this build possible.
Arduboy: The Interactive Digital Business Card - [Link]
A website that overlaps a photo of the Arduino UNO board, with the name and the goal of a component when you move your mouse over this component.
ArduMap – Arduino mouse over map - [Link]
Lonnie Honeycutt writes:
This is the Nokia 5110 84X48 display that was used on millions of phones in the late 90’s. In this video, I show how to connect the Nokia 5110 LCD to an Arduino Uno, import the correct libraries to the Arduino IDE, and write code to generate text and graphics on the display.
How to use the Nokia 5110 84X48 LCD display with Arduino - [Link]
000Plasma000 @ youtube writes:
Working on a project where you need to display something (like data/debugging info)? Why not use an LCD! In this video, I go through various aspects of controlling the device with an Arduino, including setting different types of cursors, toggling the display and even creating custom characters!
How to Control LCD Displays – Arduino Tutorial - [Link]