FreqEZ – Parts List

Required and Optional Materials

  • The Console runs on a Windows PC with the following characteristics
    • Windows 7 or later
    • 8 GB of RAM minimum
    • 10 MB of disk space
    • Ethernet/WiFi connection
  • The Controller runs on a Raspberry Pi with the following characteristics
    • Raspberry Pi model 3 or newer with 40 GPIO pins
    • Raspberry Pi micro-USB power cable with power supply or PC as a power source
    • 8GB (or larger) microSD card with Raspbian operating system. Fast card (class 10) recommended
  • Band Decoder switches
    • Two SainSmart relay modules (or equivalent ) with 8 relays each. Models with 5 volt relays
    • Dupont rainbow female-to-female jumper cables for connecting the 40 pin RPi GPIO connector to the SainSmart relay modules. Recommend 30 total conductors, approximately 8 inches in length
  • Recommended hardware
    • Enclosure – to accommodate an RPi and two SainSmart 8 relay boards. Search Amazon or eBay for an aluminum extruded enclosure measuring 203mm x 144mm x 68mm – many sources and colors available
    • Mounting plate/tray inside the enclosure – rather than connect the hardware devices directly to the case, cut a piece of aluminum or perf board to slide along the guides within the enclosure. The tray should measure 7 7/8 long by 5 31/64 (5 1/2 inch may be too tight) wide. Aluminum plate should be .063 stock (see photos)
    • Stand-offs for mounting the relays and Raspberry Pi above the mounting tray. Many plastic and metal products are available on eBay and Amazon
    • Connectors and wire – as appropriate for connecting the enclosure to external remote antenna switches. Suggest D-sub 9 pin female for antennas, a D-sub 9 male for BCD inputs, RCA jack for PTT/Tx.
  • Optional voltage regulator – when using the Controller remote from the shack and +5 VDC sources
    • 12 volt to 5 volt regulator – for feeding the enclosure from a single 12 VDC power source. Useful when operating the Console remotely from the shack and a PC USB 5 volt supply is not available. Delivers 5 volts DC for the Raspberry Pi and SainSmart relays.