Demos showing real-time access to your boat via VPN
Why use a VPN to access your boat
The demos display what is happening on our boat, SNAFU II. If you are interested in viewing
your own boat systems via a VPN, allowing you access to your data in real-time, then please do contact
us for details. For further details email Penny
at this URL.
All the demos on this site are reading directly from the systems on our boat via 4G.
They show monitoring of the batteries and solar panels.
The software is free and Open Source. Our own software is downloadable
via this site and there are links to other sources you may wish to use (such as SignalK and Grafana).
The software currently supports the more recent Epever MPPT controllers which use Modbus (e.g. the Tracer-AN
Series and later models all support Modbus) and,
from the NASA range, the BM1 battery monitor with it's proprietary protocol via Bluetooth connectivity.
Skipper's Mate System
Our extensive Skipper's Mate system is still free and Open Source - available from the Downloads page on the web site.
As the result of Brexit trading conditions, we no longer supply hardware.
Notes on BatteryWatchdog Demo
This demo shows the current amps and volts via the Epever using our own Open Source BatteryWatchdog gauges.
This shows the Battery Monitoring and Solar Monitoring using an Epever Triron via Bluetooth. It shows
the actual readings from the Solar Panels and then the input to the battery bank(s) with the benefit of MPPT charging.
Notes on SignalK Demo
The demo allows you to view details of the feeds which we have set up using SignalK to integrate our boat systems.
is an open data format allowing you to utilise the data from
a wide range of standard sources. For the purposes of the boat we have, or plan to have, inputs from instruments using
NMEA2000, NMEA 0183 and Modbus. Please Google for information about SignalK - it is both clever and complex so we won't be
discussing the details here. The Notes on the SignalK Demo
are merely there to help you navigate to
the feeds we have running.
Notes on Grafana Demo
The demo shows the amps and volts recorded via the BM1 and the Epever over a given period - the default
is the last 6 hours but longer periods can be displayed, depending on the retention period for the data
This demo uses the powerful Grafana graphing package (Open Source) and may take a few seconds
to load. Once the package is loaded moving between screens should be quite fast.