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

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

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Electronics - Sunrise alarm clock Principle of operation This is an alarm clock simulating the sunrise, which means that a few minutes before the alarm goes off, it shines some light whose brightness increases over time. The alarm clock is built around a MSP430G2553 microcontroller compatible with the MSP430 Launchpad from Texas Instrument. It features a DCF77 module which sets the clock automatically through radio waves. The display is a character LCD module with 4 lines of 40 characters driven by a HD44780 controller. RPi Low-level peripherals Back to the Hub. Hardware & Peripherals: Hardware and Hardware History. Low-level Peripherals and Expansion Boards. Screens, Cases and Other Peripherals.

Your TV - PC Remote Companion Flirc learns from any remote control, not caring about different vendor protocols. Just walk through the super simple setup - pairing individual remote buttons with 'Media Centre Buttons' and you're done. It's basically a universal IR receiver, so can be used with any remote you choose, old, new or Universal! The best part about FLIRC is that it can be used to mimic a keyboard so every media center application understands it without any drivers. FLIRC runs across all platforms, Mac, Linux, and Windows. 10 Raspberry Pi creations that show how amazing the tiny PC can be The Raspberry Pi, the $35 credit card-sized computer, has lived an interesting life despite being less than a year old. It has been used to teach programming and host servers, but above all it has provided a near-perfect platform for some of the most fun and interesting hobbyist projects in the computing world. Arcade cabinets, computing clusters housed in LEGOs, musical instruments, robots, and wearable computers are just some of the uses Pi owners have found. It turns out you can do a lot with an ARM processor, GPU, a few ports and GPIO pins, and an operating system (typically Linux-based) loaded onto an SD card. Here are 10 of the coolest Raspberry Pi creations we've been able to find. A Pi-powered arcade cabinet

One Slice At The Time - Pi4Minds Download Raspbian Wheezy disc image. I've got mine from here and I choose the which contained the 2012-12-16-wheezy-raspbian.img image file. I suggest that you follow the instructions related to the cryptographic hash verification before you proceed with the next step. Connect your monitor via HDMI cable, your USB keyboard, USB mouse, micro-USB power cord and "plug it in". You will see the Raspberry logo on the upper left corner of the screen/monitor and will assist to the hardware check and boot up process at the end of which, you will be presented with something like this:

Camcorder CRT's aren't rocket science. - Blogs - The Vintage Computer Forums The tiny CRT in a consumer camcorder is a fantastic piece of work. I also feel they are the most unexploited video displays you can get your hands on. I always wanted to make use of the things but assumed that there was a bit more going on that you would expect. I was wrong. Give it power, give it video and it's okay.

PL880 hidden function you may not know these features of the tecsun radio Pl880 You may not know these features of the tecsun radio Pl880? So let me tell you. Under [ Off ] mode, press the [ AM BW ] key – the first time that full-screen symbols ; second time to display the software version number ( eg 8820 ) , LSB, this short time and then turn off the synchronous detection by LSB ) Under [ Off ] mode, press [ VF / VM ] key – Display battery life MW calibration: 1.MW transferred to any strong station 2.Open the SSB mode (USB / LSB can ) 3. Adjust the trimmer until you hear a good jog SSB signal ( that is a good tune zero beat ) 4.Press and hold SNOOZE button , you see a return correct value is displayed. 5.Press the SNOOZE button.

Turn your Raspberry Pi into a Wireless Portable Bluetooth Audio System A2DP Howdy folks! I had the idea of turning my Raspberry Pi into something like the Beats By Dre portable audio system found here: It’s a cool product, don’t get me wrong, but I’m not really down to pay $400+ tax for some fancy looking speakers (which don't even give you rechargeable batteries, by the way). So I decided to set off to replicate the functionality without the hefty price tag. OBJECTIVE: To create a Raspberry Pi that automatically boots into the command line and becomes discoverable via Bluetooth. Any Bluetooth-enabled device with the A2DP (Advanced Audio Distribution Profile) support will be able to push audio to the Pi through its Analog (default) or HDMI speaker output.

berryboot [BerryTerminal] For people short on SD cards: Berryboot is a simple boot selection screen for ARM computers like the Raspberry Pi, that allows you to put multiple Linux distributions on a single SD card. In addition it allows you to put the operating system files on an external USB hard drive instead of on the SD card itself. Download link Berryboot for the original Raspberry Pi and Pi Zero: sha1sum: f8cfc1b4f57e0b6886569091ca7e277d33ffee0f Download link Berryboot for the quad-core Raspberry Pi 2 and Pi 3: sha1sum: 7f44898dcca58cd4c1562273a44121c90e3543ab To install: extract the contents of the .zip file to a normal (FAT formatted) SD card, and put it in your Raspberry Pi. This can be simply done under Windows without any special image writer software.

Adventures in Raspberry Pi-land: Bootloaders and LEGO sets After several shameful weeks of having it sit on a bookshelf, Gizmag recently decided it was time to embark upon not one but two very ambitious projects for its Raspberry Pi: turning it on, and building a LEGO case for it. Needless to say, in both cases we turned to the worldwide web for fast, easy answers. View all I say "turning it on," but considering that's as simple as connecting a power adapter (not included), we thought we'd go one better and get the thing properly up and running. Automatic LCD Sunglasses This week I completed a hack I’ve been working on for a few weeks. It all started with Ben Heck’s automatic sunglasses hack. He used an MCU and a photocell to flip down some shades in front of his glasses using some mini servos.

A Review of the Bonito 1102S RadioJet 24 bit IF Receiver Bonito’s Dennis Walter at the Bonito booth in Hara Arena at the 2012 Dayton Hamvention At the Dayton Hamvention this year, I met Dennis Walter, who is with Bonito, German manufacturer of the 1102S RadioJet. Dennis was kind enough to loan us a radio for review on

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