Turning the Raspberry Pi Into an FM Transmitter - Imperial College Robotics Society Wiki

Steps to play sound: (Created by Oliver Mattos and Oskar Weigl. Code is GPL) sudo python >>> import PiFm >>> PiFm.play_sound("sound.wav") Now connect a 70cm (optimally, ~20cm will do) or so plain wire to GPIO 4 (which is pin 7 on header P1) to act as an antenna, and tune an FM radio to 103.3Mhz. Download the module here: [Download Now!] (this contains both source and a ready to go binary. New! sudo . How to change the broadcast frequency Run the . The second command line argument is the frequency to transmit on, as a number in Mhz. sudo . It will work from about 1Mhz up to 250Mhz, although the useful FM band is 88 Mhz to 108 Mhz in most countries. Most radio receivers want a signal to be an odd multiple of 0.1 MHz to work properly. The details of how it works Below is some code that was hacked together over a few hours at the Code Club pihack. If you're v. smart, you might be able to get stereo going! Accessing Hardware

Shrunk down an Arduino to the size of a finger-tip! by Open Source RF RFduino: A finger-tip sized, Arduino compatible, wireless enabled microcontroller, low cost enough to leave in all of your projects! The RFduino has Bluetooth 4.0 Low Energy built-in, which enables it to wirelessly talk to any smartphone that has Bluetooth 4.0. Currently we have several open source apps built for the iPhone which were used in our demos. The RFduino has a Nordic 32 bit ARM Cortex-M0 processor, so it has more power then the UNO, however it still runs the same, simple Arduino code the UNO runs, so there is no need to learn any new programming language or environment. The RFduino GPIO lines all support, Digital IO, Analog ADC, SPI, I2C, UART and PWM. The RFduino is similar to the Arduino UNO or DUE, except the RFduino is a fraction of the cost and size, in addition has wireless smartphone connectivity built-in! Up to now, adding wireless to an Arduino required an additional wireless shield which adds cost and size. It can be used with or without Bluetooth 4.0. - Armen

smARtDUINO: Open System by former ARDUINO's manufacturer by Dimitri Albino Check the details in our update (click here). All the details are available in the public update (click here). You can read all the details in our update (click here). All the details are reported in our update (click here). smARtDUINO is the newest and easiest tool to create electronic projects. smARtDUINO is the most advanced platform for the creation of electronic projects and even products. It is the only platform that is not based on a single processor, architecture or language but, in-fact, leverages a "universal" or common platform that can be used to connect components originally developed from different companies, technologies and form factors. smARtDUINO allows you to integrate modules, accessories or shields from various other platforms such as Arduino™, Netduino™, ChipKit™ and even interact with smartphone using an ADK module. There are virtually no limits in the number of different components that can be integrated in a system, with smARtDUINO. Above you see 3 common components.