Arduino Tic-Tac-Toe game writes:

Tronixstuff has posted this classic Tic-Tac-Toe game using the Arduino and the Sparkfun LCD shield. User input is via a homebrew button board. Two variations of the Arduino sketch are provided, along with a simple schematic for the button connections.

Arduino Tic-Tac-Toe game – [Link]

Build your own Wifi radio

janw writes:

The internet hosts lots and lots of online radiostreams, most of them with a certain theme, ranging from old time classics to Tibetian riverdancing. I must admit that I love to listen to them while I’m building stuff, as I can choose the music I like without listening to the same cd’s over and over again.

Build your own Wifi radio – [Link]


MAX3421E USB peripheral/host controller with SPI interface

MichaelZ writes: [via]

While poking around SparkFun’s website I found USB Host Shield which is only marginally interesting unless you are an Arduino fan. But the USB host controller chip is interesting. The MAX3421E is a USB Peripheral/Host Controller with SPI Interface. This is an alternate to the FTDI VNC USB host controllers. It has only one USB port vs the FTDI two but for some applications it maybe the way to go. For example it could be used with a CPLD or FPGA as a USB Host. A SPI master is easy to implement in a CPLD/FPGA (similar to the dual ’595′s example). In VHDL a simple state machine could do all of the register control.

MAX3421E USB peripheral/host controller with SPI interface – [Link]

Geiger Tube Sensors writes: [via]

Geiger Mueller Tubes – Handy for people looking to make random number generators or detect radiation. Tubes tend to be Cold War old stock from Russia/US, and tend to be used for detecting Gamma and Beta radiation. You’ll need a high voltage boost supply – check nixie tube projects for some HV supply designs

Geiger Tube Sensors – [Link]

Build a Wind Lantern writes:

In this project, we’ll build a small, vertical-axis wind turbine, or VAWT for short. These are not as efficient as their horizontal-axis cousins, but they are better suited to urban environments where wind can come from all different directions.

Build a Wind Lantern – [Link]

Turn Your iOS Device into a DSLR Remote writes: [via]

In this tutorial we’ll explore creating a home made IR trigger capable of firing your DSLR camera out of just a couple bucks worth of parts. Then we’ll show you how to use an iPhone app called to trigger your camera, record GPS locations, shoot timelapse sequences and more.

Turn Your iOS Device into a DSLR Remote – [Link]


DIY power supply for home server computer writes:

This project describes a home made power supply for a small server computer. It uses a toroidal power transformer (not the conventional transformer) to step down the mains AC voltage. The advantages of using a Toroidal is it is quiet, efficient and smaller in size. The transformer output is then rectified and capacitive filtered. DC regulation is achieved using PTN78020 for the 12v supply, and PTN78000 for the 5V one.

DIY power supply for home server computer – [Link]

DIY Multi-function power supply unit has just posted a new project called “Multi-function power supply”. It is not just a simple power supply but it has built-in Volt-, Current-, and Frequency meters. The beauty of this project is that while you are prototyping your circuit, you can continuously monitor how much current your circuit draws at a specified operating voltage. This way you will know in advance how much power your design will require. The built-in frequency counter can measure frequencies up to 50.0 MHz.

DIY Multi-function power supply unit – [Link]