A Taste of Pi-Updated ® Raspberry Pi Foundation 10/13/14

Agenda Where Did It Come From? What is It and what's new? What's Not There? What Do You Need? What Are People Doing With It? What Can Hams Do With It? How Can I Get One and More Info? Demo Ham Applications APRS digipeater/Igate Dstar DVAP and DHAP

Where Did It Come From? Developed in Cambridge Univ, UK – still nonprofit Purpose – provide students a very low cost platform to learn about computers and software Hardware and software is all open source i.e. free, distributable and able to be modified; NOT proprietary Original goals ~ 10,000 units in 2-3 years 1 Million sold!! in first year (Feb 2013) 2 Million sold Oct 2014

What is It – Model B 2.25” x 4.5” 5v power Linux variant OS >4 Gb SDcard 512 Mb RAM Camera add-on Not a laptop 700 Mhz processor

What is It – New Model B+ So, what's different? 14 more GPIO pins IDE computer cable!! µSDcard ~$35, same price audio/video in single connector 4 USB ports 4 @ mounting holes Not compatible with B cases ~0.5 – 1 watt less power Uses HATs (Hardware Attached on Top) for add-on boards

Many New Competitors Beaglebone Black, Rev C Price ~$55 5v, 2A 1 GHz 32 bit processor 4GB flash memory Pre-loaded OS

Software OS – Linux variants (www.raspberrypi.org/downloads) for ARM architecture Raspbian “wheezy” Version of Debian linux Others (Noobs, Arch, Pidora) Applications – LXDE desktop pre-installed Epiphany(browser), omxplayer(video), leafpad(editor) 35,000+ freely available via Linux repositories Scratch – visual programming environment

What's Not There No shutdown/reset (hackable) Only 700 Mhz (1Ghz turbo possible) CPU No VGA output No on-board realtime clock, uses internet Time via NTP or external RTC daughterboard No on-board DAC, unlike Arduino, Beagle Bone Black Doesn't run MS Windows GPIO is unbuffered, uses 3.3v, NOT 5v tolerant!!!! 20+ I/O, many dual purpose (I2C, SPI, UART, sound PWM)

What Do You Need Quick start guide http://www.raspberrypi.org/quick-start-guide Compatible devices AC → 5v, 1 amp minimum (USB charger but these are noisy) SDcard > 4 Gb, bigger the better (µSDcard or SDcard) Download & load OS image HDMI video ( TV or computer terminal, HDMI ->DVI cable) Component video, aka old TV No VGA! AC-powered!! USB hub - Keyboard, mouse, etc Ethernet or Wifi dongle??

What Are People Doing With It? Media server, XBMC, OpenELEC, Google TV High altitude balloon payload (GPS, APRS, video) Student robotics, quadrotor, marine ROV(FishPi) Home automation, sensors (temp, humidity, barometric etc) Garage door control Security monitor (webcam with microphone) Dash cam Time lapse photography (NABRC field day) Brewing beer! (BrewPi) Home weather web server (pywws) Internet radio Birdbox (remote video , senses bird activity) Carputer (OBD reader etc)

PiFace Add-on 2 Changeover Relays* $28 Many others available 4 Tactile Switches 8 Digital Inputs 8 Open-Collector Outputs 8 LED Indicators Graphical Emulator Easy to program in Python, Scratch and C Support for interrupts $28 Many others available

Rasp Pi Weather Server WH 1080 Weather station Wifi Internet to Weather Underground

Raspberry Pi Web Server for Weather uses Pywws Weather graphs Custom home page

Raspberry Pi camera Case & lens $30 $25

Display Boards $20 (demo) $35 $20

What Can Hams Do With It? DVAP using DVMega daughter board Station Control--Power/Antenna Switching Automatic Satellite Antenna Control SDR (RTLSDR dongle & ADSB decoder) Radio Control (USB or external RS232 level converter) Internet Radio Linking Project Multi-mode Beacon TNC-X ( APRS digipeat/Igate) NBFM radio (fox hunt)

TNC-Pi -digipeater/I-gate Connector To radio $40 (kit) Local: KQ4KK-5 WB5NHL-1 KP2L-5 KE4TTA (coming) Others??? Ethernet to aprs.fi

digipeater/Igate Software (DIXPRS) Free! Python Program Runs headless Starts on boot Web page Status Edit simple config file

for connection to reflector DVMega Dstar Hotspot UHF antenna 90 Euro (board only) $229 (complete bundle) 5 volt power 10 mw UHF xcvr Local: KP2L-B WB5NHL-B Wifi to cell phone or ethernet for connection to reflector

XMAS is Coming http://www.kano.me $150 less monitor!!!! $118 retail @ Adafruit separately $150 less monitor!!!! kids assemble (connect) it make video modify snake, pong, minecraft make music http://www.kano.me

How Can I Get One? Raspberry Pi and Accessories (both B and B+ versions) Element 14/Newark ($35) Makershed ($39.99) Adafruit ($39.95) -good site for prototyping MCM Electronics ($35.00) Gigaparts $229 (DVMega bundle, ready for Dstar s/w) Coastal ChipWorks $40 kit (TNC-Pi) Kano $150 (http://kano.me)

More Info? Books On the Web Getting Started with Raspberry Pi Raspberry Pi User Guide Programming the Raspberry Pi: Getting Started with Python Learn Raspberry Pi with Linux Raspberry Pi for Schools Raspberry Pi Educational Manual (free) Raspberry Pi in Easy Steps On the Web http://www.raspberrypi.org/quick-start-guide Quick Start Guide http://www.raspberrypi.org/phpBB3/ Raspberry Pi Forums http://elinux.org/R-Pi_Hub Raspberry Pi reference http://www.scoop.it/t/raspberry-pi Raspberry Pi News http://groups.yahoo.com/group/Raspberry_Pi_4-Ham_Radio RaspPi & Ham radio http://www.themagpi.com/ Great Free Mag On-line!!

Demo Prototyping station (Raspberry Pi & Arduino) Home weather station reports on Weather Underground http://www.wunderground.com/personal-weather-station/dashboard?ID=KSCAIKEN12#history DVAP with DVMega daughter board, & DHAP http://aprs.fi/#!mt=roadmap&z=11&call=a%2FWB5NHL-B&timerange=3600&tail=3600 APRS digipeater/ Igate http://aprs.fi/#!lat=33.44830&lng=-81.69210 Raspberry Pi camera Another meeting: Would you like a live demo of Arduino programming?