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Steve Marple
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46 followers
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Python one-liner: return latest version
Today I need to find the latest version of some software. A normal ASCII sort (or even a numeric one ), would be unreliable given the use of semantic version numbers . Instead I came up with this simple Python command that uses distutils LooseVersion to sor...
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Using the Raspberry Pi sense hat to show the AuroraWatch UK status
Image © Barry Osborne 2017. Used with permission. This post uses the Raspberry Pi sense hat to display the  AuroraWatch UK alert status. It assumes you already have Raspbian installed on a Raspberry Pi, networking configured and enabled, and the sense hat f...
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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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