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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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Arduino Ethernet Shield
Our Price: $54.99
AD9850 DDS Module
Our Price: $21.95
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. 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.

Features
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
Sometimes you just do not need to design your own custom board.  This bare board supports the ATmega8/48/88/168, has landings for a regulator and crystal, plus breakouts, a handy IDC header and four corner mounting hole.  It is ready to populate and use in your next design. Use these as a turn key modular starting point for your next project.  We really love these!  Top quality 1.6mm FR4 board handles "toaster reflow" easily.  Free shipping in the USA via USPS.

Size:58(mm) x 35(mm)