This 8"/200mm long swivel dipole antenna has 5dBi of gain and 50Ω impedance so it will work fantastically with just about any 2.4-2.5GHz wireless receiver/transmitter such as: 2.4GHz Wi-Fi (802.11b/g/n), 2.4GHz XBee, Bluetooth, Other 2.4GHz transceivers.
Adding quality audio to an electronic project is surprisingly difficult. Here is a shield for Arduinos that solves this problem. It can play up to 22KHz, 12bit uncompressed audio files of any length. It's low cost, available as an easy-to-make kit.
This is a USB Arduino compatiable kit with an ATmega328 chip. This development board acts just like an Arduino, and works with the latest Arduino software.
