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These things are nothing short of amazing! Arduino based boards can sense and respond the environment by receiving logic or serial input or from a variety of sensors. Control lights, motors, interact with other devices using a variety of protocols. Add sensors for liquid or gas detection, infrared. You name it. Accessory shields are available allowing virtually limitless expansion possibilities. The microcontroller on the Arduino board is programmed using the very friendly C-like Arduino programming language. The free Arduino development environment is refreshingly clean and efficient. The open-source IDE can be downloaded for free for Mac OS X, Windows, and Linux. We carry both genuine Arduino brand and the excellent quality Freaduino clones which offer better value and often some unique improvements. Arduino is a powerful and friendly development platform intended for anybody, beginners OR experts, who wish to easily and quickly create their own powerful custom applications. I have been designing professional micro-controller applications for two decades, and feel the Arduino development eco-system is a long overdue breath of fresh air. Sleek. Sexy. Italian Inspiration. Buy some!
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Our Price: $69.00
Arduino Uno
Our Price: $29.00
Arduino Ethernet Shield
Our Price: $54.99
Top quality.  Not a clone. The Arduino Ethernet Shield an Arduino board to connect to the internet. It's based on the Wiznet W5100 ethernet chip. The Wiznet W5100 provides a network (IP) stack capable of both TCP and UDP. It supports up to four simultaneous socket connections. Use the open source Arudino Ethernet library to write sketches to connect to the internet using the shield. This shield connects to an Arduino board using long wire-wrap headers which extend through the shield keeping the pin layout intact and allowing another shield to be stacked on top if desired.  This shield also includes a micro-SD card port for data logging or other storage applications.
Arduino Touch Shield
Our Price: $69.95
AD9850 DDS Module
Our Price: $21.95
The 2.8'' TFT Touch Shield is an Arduino UNO/ Mega compatible multicolored TFT display with a 4-wire resistive touch-screen. It is available in an Arduino shield compatible pinout for attachment.
The TFT driver is based on ST7781R with 8bit data and 4bit control interface.
Arduino UNO Rev3 / Mega Shield compatible footprint.
Resolution : 240 x 320 pixels
Size : 2.8" (50.0 x 69.2 x 2.5 mm)
Colors : 262K
Backlight : LED
Driver IC: ST7781R
4-Wire resistive touch screen

Potential Applications:

As a general purpose Graphic display for Arduino compatible devices and any MCU.
Glove compatible resistive touch based inputs.
This kit has everything you need and more to be creative and get going with the Arduino platform.  The included breadboards are top quality and having more than one is often very useful in modular designs, or when working on multiple projects at once.  The included jumper kit saves a bundle of time and frustration over stripping your own, and can be used over and over.  All goodies store neatly in the nice quality transparent organizer box.

You get:

1 x Freaduino Leonardo fully compatible top quality Arduino clone
1 x mini-USB wire
1 x Transparent Breadboard
2 x Mini Breadboard
1 x Mini Servo
1 x PIR Motion Sensor
1 x Joystick
1 x Nokia 5110 LCD
1 x Relay (5VDC)
1 x Breadborad jumper wire
1 x 1 pin Female  Female jumper wire
50 x 5mm Clear LED(Blue/Green/Red/White/Yellow)  These are nice and bright.
3 x RGB Color LED Green
5 x short Circuit Cap headers
5 x Length Circuit Cap
2 x 2.54mm 40Pin Male Header
2 x 2.54mm 40Pin Male right angle Header
2 x 2.54mm 40Pin Male Header Yellow
2 x 10K trimpot
2 x Button
10 x 1K Resistors
10 x 10K Resistors
1 x Passive buzzer
1 x Quality transparent plastic box

A whole lot of fun, discovery, and value, in a neat, all inclusive package.
This DDS module is based on the popular AD9850.  This chip covers 0-40MHz, with a 32-bit frequency tuning word, which results in an output tuning resolution of 0.0291 Hz for a 125 MHz reference clock input.

This unit is an ideal building block to build your own Function / RF generator or for use as an Amateur radio VFO or
even the basis for a QRP transmitter.

This module provides you a rock stable ready made solution and you can use the on board serial or parallel inputs to control  the AD9850 for different frequency outputs. The duty cycle is adjustable by a variable resistor.

2 channel square wave output and 2 channel sine wave output
Sine wave: 0-40Mhz ; Square wave: 0-1MHz
A 70MHz low pass filter, for a clean waveform and high signal to noise ratio
Parallel and Serial data bus selection
Adjustable Duty cycle
DA reference Pin12 for easy amplitude adjustment
Size: 42 x 30 x 1.6 mm