This board can do it all - breakout the Synapse RF module pins, give you a USB port/FTDI chip to program, supply it with a regulated 3.3V, integrate a reset switch (for updating & erasing), and also give you mounting options.
Because the Arduino (and Basic Stamp) are 5V devices, and most modern sensors, displays, flash cards and modes are 3.3V-only, many makers find that they need to perform level shifting/conversion to protect the 3.3V device from 5V.
It is the most easy and reliable way to connect the Xbee module to a PC via USB port.
This is a simple SD or MMC adapter card. It allows you to interface with any microcontrollers. It is perfect for mass storage, WAV/MP3 player and data logging.
MinM is a tiny smart LED that's designed for wearable technologies, UAVs and handheld devices.
Looking for a micro USB connector to connect to your project? This'll do it!
This is a simple MicroSD adapter card, that allows you to interface with any microcontroller.
Sometimes it would be very nice to be able to add connectivity to your Arduino/Freeduino project. The Adafruit Ethernet shield kit lets you add network connectivity!