# Internet Streaming "On Air" Sign ## Overview Danger: ![](https://cdn-learn.adafruit.com/assets/assets/000/010/432/medium800/projects_onair.jpg?1396905662) If you run a recurring video broadcast on _Ustream_ or _Google+ Hangouts on Air_, or if you have favorites you like to watch fervently, you might enjoy or have practical use for this lighted “On Air” sign. It’s inspired by the studio warning lights used in radio broadcast and TV production, with an internet-connected twist. Not just for visual flair, these signs also have an important use: they tell others when it’s time to keep quiet, and not to interrupt, barge in the room or hog all the bandwidth watching cat videos. This “connected” sign is foolproof in a way that a manually-switched sign is not. You won’t leave it on (or off) accidentally. By polling the streaming server(s) directly, the status is always correct with respect to delays, early starts, vacation breaks, etc. The broadcaster and sign can be separated by a wall or by half the planet. # Parts Required - [Raspberry Pi computer](http://www.adafruit.com/products/998) (any model) and associated hardware: - [Power supply](http://www.adafruit.com/products/501) and [USB MicroB cable](http://www.adafruit.com/products/592) - [SD card](http://www.adafruit.com/products/102) (4GB or larger) - [USB WiFi adapter](http://www.adafruit.com/products/814) or Ethernet network connection - [Case](http://www.adafruit.com/products/1140) - Keyboard and monitor for setup (can be run “headless” once complete) - [PowerSwitch Tail II](http://www.adafruit.com/products/268) appliance controller - Mains-powered lighted sign - [Jumper extension wires](http://www.adafruit.com/products/824) There are some classy professional studio warning lights available out there, but these do not come cheap — some get into the hundreds of dollars! Really most any lamp or lighted sign will do, or can be adapted if you’re craft-inclined. Our example sign is an inexpensive lighted house number box, a 12V DC adapter and some 2" adhesive vinyl letters from an art store. The more technically-minded might forego the PowerSwitch Tail and assemble something from [LPD8806 LED strips](http://www.adafruit.com/products/306 "Link: http://www.adafruit.com/products/306"), controlled by your own code on the Raspberry Pi. The PowerSwitch Tail II uses a relay for switching and is therefore compatible with all lighting types — incandescent, LED or fluorescent/CFL. ![](https://cdn-learn.adafruit.com/assets/assets/000/010/436/medium800/projects_crafts.jpg?1396905724) - [Next Page](https://learn.adafruit.com/internet-streaming-on-air-sign/account-setup.md) ## Featured Products ### Raspberry Pi Model B 512MB RAM [Raspberry Pi Model B 512MB RAM](https://www.adafruit.com/product/998) Adafruit ships the **Raspberry Pi Model B 512MB RAM** as of 10/18/2012. The Raspberry Pi® is a single-board computer developed in the UK by the Raspberry Pi Foundation with the intention of stimulating the teaching of basic computer science in schools. The Raspberry... No Longer Stocked [Buy Now](https://www.adafruit.com/product/998) [Related Guides to the Product](https://learn.adafruit.com/products/998/guides) ### Powerswitch tail 2 [Powerswitch tail 2](https://www.adafruit.com/product/268) [**The PST has been discontinued. Please check out the IoT Power Relay for an equivalent alternative. The IoT Power Relay has more outlets but otherwise is functionally the same, and at a similar price!**](https://www.adafruit.com/product/2935) The Power Switch... No Longer Stocked [Buy Now](https://www.adafruit.com/product/268) [Related Guides to the Product](https://learn.adafruit.com/products/268/guides) ### Premium Female/Male 'Extension' Jumper Wires - 40 x 12" (300mm) [Premium Female/Male 'Extension' Jumper Wires - 40 x 12" (300mm)](https://www.adafruit.com/product/824) Handy for making wire harnesses or jumpering between headers on PCB's. These premium jumper wires are 12" (300mm) long and come in a 'strip' of 40 (4 pieces of each of ten rainbow colors). They have 0.1" male header contacts on one end and 0.1" female header contacts... In Stock [Buy Now](https://www.adafruit.com/product/824) [Related Guides to the Product](https://learn.adafruit.com/products/824/guides) ## Related Guides - [Adafruit 1.3" Color TFT Bonnet for Raspberry Pi](https://learn.adafruit.com/adafruit-1-3-color-tft-bonnet-for-raspberry-pi.md) - [Python Virtual Environment Usage on Raspberry Pi](https://learn.adafruit.com/python-virtual-environment-usage-on-raspberry-pi.md) - [Adafruit 2.23" Monochrome OLED Bonnet](https://learn.adafruit.com/adafruit-2-23-monochrome-oled-bonnet.md) - [Adafruit Speaker Bonnet for Raspberry Pi](https://learn.adafruit.com/adafruit-speaker-bonnet-for-raspberry-pi.md) - [OctoPrint on M3D](https://learn.adafruit.com/octoprint-on-m3d.md) - [reef-pi Guide 7: Dosing Controller](https://learn.adafruit.com/reef-pi-guide-5-dosing-controller.md) - [Network Interface Failover using FONA](https://learn.adafruit.com/network-interface-failover-using-fona.md) - [Moonshine Voice Control on Raspberry Pi](https://learn.adafruit.com/moonshine-voice-control-on-raspberry-pi.md) - [CNC Joy Bonnet Case](https://learn.adafruit.com/joy-bonnet-case.md) - [Raspberry Pi Selfie Bot](https://learn.adafruit.com/raspberry-pi-selfie-bot.md) - [Articulated Pi Display V2 Mount](https://learn.adafruit.com/pi-wall-mount.md) - [Single Channel LoRaWAN Gateway for Raspberry Pi](https://learn.adafruit.com/raspberry-pi-single-channel-lorawan-gateway.md) - [3D Printed Case for Raspberry Pi Pico](https://learn.adafruit.com/raspberry-pi-pico-case.md) - [World's Smallest MAME Arcade Cabinet](https://learn.adafruit.com/worlds-smallest-mame-arcade-cabinet.md) - [Raspberry Pi LED Matrix Sand Toy](https://learn.adafruit.com/matrix-led-sand.md)