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5 Mar 2008


A second USB servo controller. This one extends Ronald Schaten’s USB-Servo to 6 servos with a separate supply. It was designed to control the servos of a robot. This device was designed to control standard hobby radio control servos via a PCs USB port. Standard RC servos need a power supply of between 4.8 and 6 volts. They also have a Pulse Width Modulation (PWM) signal input which controls the angle of the servo. This device supplies up to 6 such servos with a 5V supply and the PWM signal to control the servo.

USB-Servo 2 – [Link]

5 Mar 2008


Automator is a device similar in concept to punched tape teletypes and musical boxes. It records key sequences and plays them back with relays. Program upload and download are done through an HID compliant driver.

Automator – Punched Tape – [Link]

5 Mar 2008


LEDLoad is a device and software designed to display many shades of colors from green to red on your computer case LED. Colors are controlled completely by software and can be updated in real-time. The LEDLoad circuit board is connected to one of the internal USB ports found on most newer motherboards. The only actual case modification required is in replacing the two (or more) front panel LEDs with tri-color versions. These are then connected to the LEDLoad circuit board.

LEDLoad – [Link]

5 Mar 2008


As a first foray into the realm of professional PCB fabrication, Flickr member A.Square designed this 6-pin breadboard adapter for programming AVR chips –

I built and have been using an Evil Mad Scientist Labs-style minimalist target board. It works great, but the problem is you more-or-less need a different board for every different type of chip you want to program, plus, you need to shuttle the chip back and forth from the breadboard to the programmer. It would be great to be able to program the chip in-breadboard, by the dual-row header pin won’t allow that. You can run wires directly from your programmer to the breadboard, but that’s a little messy. So, I decided to make a simple breadboard adapter for the ICSP header. [via]

AVR ICSP breadboard adapter – [Link]

5 Mar 2008


A beginner’s reference to the programming syntax of the Arduino microcontroller. Includes information on program structure, variables, datatypes, arithmetic, constants, flow control, and most of the common functions of the core library. Also includes an appendix with schematics and simple programs for several common tasks. [via]

Arduino Programming Notebook – [Link]

5 Mar 2008


This is a physical hit counter.It is used to count page-hits on the website instead of using software only.The counter will connected to rs232 port through a few of electronic components that preform as a counter driver and power supply circuit.The counter that I used is a machanical counter or electromagnetic counter model SC-212 which I get from an old coin-op game machine as show in the photo.As the counter’s nameplate specified, this counter requires 12VDC power supply, this means that it requires a 12V pulse to increase the counter by 1.Also,the in the nameplate show the maximum speed is 15 CPS but I not use beyond this speed in my project. [via]

Mechanical hit-counter using serial port – [Link]

5 Mar 2008


This cheap and easy to build NiCd/NiMH Battery Charger is suitable for automatically charging a wide range of batteries for many applications. Proper chargers are usually expensive and cheap chargers supplied with the original equipment often incorrectly charge the cells and dramatically shorten their life. This ‘intelligent’ charger was designed for high current and rapid charge applications such as cordless power tools and model racing cars. These battery packs are expensive and sometimes difficult to purchase. This charger uses the cell manufacturer’s recommended charge method, to safely and quickly charge batteries.

Intelligent NiCd/NiMH Battery Charger – [Link]

4 Mar 2008


Taking a clue from every Sci-Fi flick ever made, Japan’s National Institute of Advanced Industrial Science and Technology (AIST) has developed a method of projecting three-dimensional images in the air. The system reflects laser light off of mirrors, and focuses that light into a point in the air using a plasma emission phenomenon. The result is pretty darn cool. [via]

3D images floating in the air – [Link]

4 Mar 2008


This is a well-documented solution for storing unlimited caller ID phone numbers. The site contains schematics and the software needed to decode and store the data.

Some time ago, I subscribed to the Caller Id service to know who is calling me without being required to pick-up the phone. Unfortunately, my basic caller id display could not memorize enough numbers, and I had to write them manually in a computer to keep them. That’s why I decided to find a way to log the calling numbers directly to my computer. [via]

Caller ID decoder – [Link]

4 Mar 2008


Take a peek inside a Chinese motherboard manufacturer – interesting shots of all those huge machines that make mass PCB production possible. [via]

PCB manufacturing tour – [Link]





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