We source the off-the-shelf components that fit your Motus needs, then assemble and test your SensorGnome to ensure compatibility with the Motus network.
 
All SensorGnomes share some components and features:
 
Built on Raspberry Pi 3B, with heat sink on the Broadcom processor
FUNcube Pro+ receivers (for 166 MHz tag detection)
Stable SensorGnome software release (currently using October 12, 2018 image with the following updates: April and October, 2019; February 2021
"Dual-mode" 166 MHz (Lotek) and 434 MHz (CTT) capable; detection of CTT tags requires separate purchase of CTT's Motus adapter
Bulkhead double-shielded (LM195) coaxial connections to reduce strain on receivers and USB cables (1 per FUNcube included; specify UHF/BNC/N after purchase)
Precise timekeeping via GPS sync (external GPS antenna included)
Integrated exterior WiFi switch---a double-click activates a temporary WiFi hotspot to allow data download without a physical connection or removal of the microSD card. A second double-click deactivates the WiFi hotspot
Safe shutdown via integrated exterior switch (hold 3 seconds)
32GB class 10 microSD card
120V AC power supply
Reduced rate FedEx Ground shipping to continental US customers (contact us for Alaska/Hawaii/Canada/International or expedited rates)
 
Optional components
5V/3A DC converter for solar or other DC applications ($100)
additional bulkhead coaxial connections for additional receivers such as the CTT Motus adapter ($15 each; contact us)
 
Quality control
We source all new components, assemble your SensorGnome in-house, and subject each unit to at least 48 hours of continuous operation prior to shipping. During this period, we test:
connection to the Motus server
GPS acquisition
each receiver with active nanotag
multiple reboot cycles
WiFi connection and data download
DC power source (if added)