Category: Electronics

Electronics: Hardware, Simulation Software, Microcontrollers

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… Continue reading OpenPlotter – RPi4 Headless_a

OpenPlotter – Sensors_b

Introduction In a previous post (Ref.1) we examined how to connect and detect a sensor module such as the GY-91 which is referenced in OpenPlotter documentation. This module has two ICs: an MPU-9250 motion detector IC and a BMP280 pressure/temperature IC. This gives us 11 variables: 3 x accelerometer, 3 x gyroscope, 3 x Magnetometer,… Continue reading OpenPlotter – Sensors_b

OpenPlotter – Sensors_a

Introduction In previous posts we examined how to install OpenPlotter (Ref.1), how to connect a GPS receiver (Ref.2), how to connect AIS (Ref.3), and how to receive VHF (Ref.4). In this post we will examine how to connect & detect a sensor module such as the GY-91 which is referenced in OpenPlotter documentation. This module… Continue reading OpenPlotter – Sensors_a

I2C Programming & Scope Detection

Introduction Recently I have been working with various sensors such as a magnetometer, gyroscope and accelerometer for use in navigational systems (Ref.1). All these sensors are accessed using the I2C protocol. Over the past several years I have worked with various HF synthesizers that were also programmed via I2C. I used a Tektronix TDS210 digital… Continue reading I2C Programming & Scope Detection