Raspberry Pi Overview West Chester Amateur Radio Association January 14, 2013 Monthly Program Meeting Presenter: Scott Pettigrew - N8VSI
What is a Raspberry Pi? Credit-card sized general-purpose ● computer Boots from SD Card ● “System on Chip” design provides: ● 700 MHz ARM11 CPU – VideoCore GPU – Linux-based OS (Android in dev) ● 2 USB ports ● 10/100 Wired Ethernet ● Designed to plug into TV (HDMI / “Overall real-world performance is ● something like a 300MHz Pentium 2, only Composite video out) with much, much swankier graphics” Can play full HD Video ● - www.raspberrypi.org/faqs
What do you need? Basic Setup ● Micro-USB Cell Phone Charger ● SD Memory Card – 4 GB or greater – Class 4 or better (Class 10 preferred!) ● Operating System Image – Written to SD Card
What else do you need? Basic Setup ● USB Keyboard ● USB Mouse
What else do you need? Basic Setup ● Ethernet Connection ● TV or Monitor capable of HDMI or Composite connection – DVI possible with adapter
Advanced Operations ● Battery Pack ● Powered USB Hub – Total USB output from Raspberry Pi: 200 mA ● USB Sound Card ● Pi-Cobbler ● USB WiFi Adapter ● TTL Converter
What Can You Do With It?
General Uses ● Learn Linux! ● Web Server ● Print Server ● Network Attached Storage (NAS) ● Inexpensive Media Center (xbmc) ● Programming – Python – Ruby
Amateur Radio Uses ● Satellite tracking ● Portable D-Star Gateway & (gpredict) Repeater ● Station logging (xlog) ● APRS tracking (xastir) ● Packet Station (minicom +TNC or soundmodem)
Amateur Radio Uses ● Remote Station Control (rigctl) ● Station Grounding via Internet – Use GPIO to switch coaxial relays ● Low Power Consumption Digital Station? – Fldigi currently does not run well, but code is being worked on to make it more efficient. – Some reports on success with WSPR, particularly with transmit. However, 25 – 60 second decode times are being reported
Where To Get One MCM Electronics Adafruit MCM Electronics Adafruit www.mcmelectronics.com www.adafruit.com Order on internet. Your order Order on internet, orders can be: fulfilled by mail (from ~$4.55) - Shipped (~ $13) Pis are a little more expensive ($40) or - Picked up at will call in Also carries many accessories! 3 hours (free)
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