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Electronics Navigation Telecommunications

OpenPlotter – RPi4 Headless_b

Introduction Previously I looked at using the RPi4 remotely with a WiFi hotspot and controlled by an iPhone10 using VNC viewer (Ref.1/2). In this post I field tested the setup down at Toronto Harbourfront. Figure 1 shows the setup. Field Test Figure 2 shows the field equipment setup on a bicycle. I was not able […]

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Electronics Navigation Telecommunications

OpenPlotter – RPi4 – USBpwr

Previously all my work on OpenPlotter was done on an RPi3B+ installed in a PI-TOP3 development Laptop that featured a screen, keyboard, and proto board connected to the GPIO (Ref.1-Ref.10). I started with the basic installation, OpenCPN with GPS, OpenCPN with GPS & AIS, Marine Weather on GQRX, Sensors for Temp/Pres/Pitch/Heel/Compass Bearing and GRIB weather […]

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Electronics Navigation Telecommunications

RTL-SDR – V1/2/3 – USBpwr

Introduction In many applications, where ac power is not available, equipment must be operated off battery/solar systems. In these case, knowing your power requirements are critical. Recently, small inline USB power meters have become available and they can give you an immediate answer to this question (Ref.1). RTL-SDR – V1/2/3 Power Measurements I did a […]

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Electronics Navigation Telecommunications

OpenPlotter – RPi4 Headless_a

Introduction Previously all my work on OpenPlotter was done on an RPi3B+ installed in a PI-TOP3 development Laptop that featured a screen, keyboard, and proto board connected to the GPIO (Ref.2-Ref.9). I started with the basic installation, OpenCPN with GPS, OpenCPN with GPS & AIS, Marine Weather on GQRX, Sensors for Temp/Pres/Pitch/Heel/Compass Bearing and GRIB […]

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Navigation

Spray – Lat 5degN Long 26deg 30’W

Sailing Alone Around the World One of my favorite books is “Sailing Alone Around the World ” by Canadian born Joshua Slocum. On July 2nd 1895 he left the port of Yarmouth Nova Scotia and left North American behind (Ref.1/p.23). In his book he writes: “On September 25, in the latitude of 5degN, longitude 26deg […]