Journey's End

“A man's reach should exceed his grasp, or what's heaven for” — Robert Browning

2025-05-24

Thoughts on entropy, compression and predictors

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I will prefix this post by saying that none of the ideas here are new and its all well covered ground by now. Like much of this blog, I am m...

Adventures in Compressed DNG

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I have been working with industrial cameras and frame-grabbers that simply gives me a dump of their sensor data. To make that data useful it...
2025-04-10

Python One-liner for Local QR Code Decoding

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Because KeepassXC lacks the ability to decode QR code for TOTP setup and not all MFA implementations show the required secret in text format...
2024-08-11

PIO and Interrupts

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Introduction I want to be able to raise system level interrupts from PIO programs and there aren’t too many examples of this , so here is m...

PIO ASM and PlatformIO

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Introduction PIO The RP2040 has two programmable IO (PIO) blocks , each capable of executing 4 programs in parallel. This allows the RP20...
2024-01-23

Estimating a Supernova's Brightness as an Amateur

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Introduction 2023rve is the designation given to a Type II supernova discovered on 2023-09-08 by Mohammad Odeh from UAE. It appears to be p...
2023-12-23

On NS*DateFormatters

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There now exists NSDateFormatter and NSISO8601DateFormatter and their behaviour when a timezone is not set is not the same: NSDateForma...
2023-10-16

DIY EQMod Direct USB Cable

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I am in the process of resurrecting my Eq5 Pro so it is compatible with ASIAir Mini. The first step is to build an EQMod Direct USB cable. W...
2023-09-18

Build Log: SCD41 CO2 Sensor

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CO2 concentration is a proxy for how well a space, especially an enclosed one, is ventillated. To this end I build a quick-n-dirty CO2 se...
2023-03-29

Unexpected Latency in Tinyproxy

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I love tinyproxy , it is simple to setup and more than enough for my needs. Recently however I noticed that some clients were experiencing u...

Conda and Slow Proxies

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The default conda connect timeout is 9.15 seconds (no idea why this is, seems to have been the case from day one). If the proxy is slow, e....
2023-02-04

Installing python package arcgis in conda on Apple Silicon

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 In order to install the arcgis package in conda , you have to specify the architecture osx-64 otherwise the package will not be found. Th...
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Steve
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