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Steve Marple
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AuroraWatch UK camera update #2
A Python module for the AuroraWatch UK API The first goal in the journey to create an automated all-sky camera system for  AuroraWatch UK  was to interface to the camera using Python. If you missed update #1 you can read it at here . One of the requirements...

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FTDI all-in-one serial converter, programmer, switch
FTDI all-in-one FTDI all-in-one PCB layout. There are a multitude of FTDI converters and breakout boards available but none of them exactly fitted my needs so this is my version tuned to suit my requirements. I'm publishing the design files in the hope they...

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Why Kp is a poor indicator for auroral alerts
What is Kp? Kp is a an index to represent the planetary geomagnetic activity. The name originates from "planetarische Kennziffer" (German for planetary index). It has 10 main levels, numbered from 0 (no geomagnetic activity) to 9 (extreme geomagnetic activi...

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Calunium v2.1a
I've made a few minor improvements to the Calunium design, partly to satisfy compatibility between Calunium and Arduino shields and partly to fix a few minor hardware errors. Disconnect VCC from the ISP header The ISP header is a 6 pin male header which can...

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Power over ethernet (PoE) magnetometer and cloud detector
Combined magnetometer and cloud detector. To improve the performance and stability of the AuroraWatchNet magnetometers I recently began experimenting with a power over ethernet (PoE) version. With restrictions on power consumption lifted considerable perfor...

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Performance comparison of power over ethernet (PoE) and battery magnetometers
I've been working to improve the performance and stability of the AuroraWatchNet magnetometers. It's apparent that both measurement noise and stability are considerably improved when the sensor is powered continually. Unfortunately with the sen...

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I was interviewed by The Scotsman newspaper about the best places in Scotland to see the aurora borealis. The magnetometers for schools that I designed get a mention too.

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Magnetometer progress report: link indicator LED
I recently added a new feature to the magnetometer remote sensor unit firmware. To help indicate when it is within radio communication range of the base unit an LED is turned on at the start of a message communication. When the sensor unit receives the ackn...

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Cloud detector: a review of progress so far
The hardware My cloud detector has been running outside for over 5 months now. Overall I'm very pleased with how it works. The battery-powered hardware is based on the AuroraWatchNet magnetometer  design, which uses my own Calunium microcontroller developme...
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