Hardware and software engineer with experience in product development and building automation. Director at Cabot Technologies and Product Manager at NEX Data Management Systems.
Note: This post is currently just some loose notes during my R&D, and is a continuation of the Extech CO250 project. See my Extech CO250 review here. I have RS-232 details and teardown here. Open-source Java library I have a working Java library that reads all values over serial and provides statistics (minimum, maximum, average, […]
The Extech CO250 (AKA Senseair pSENSE RH) is a relatively cheap handheld air quality measurement device with decent features. It measures carbon dioxide (CO2), dry-bulb temperature, and relative humidity, and also provides calculated dew-point and wet-bulb temperatures. One interesting feature, and the subject of this post, is it’s serial communications port. It comes with a […]
The Extech CO250 is a relatively cheap handheld air quality measurement device with decent features. It measures carbon dioxide (CO2), dry-bulb temperature, and relative humidity, and also provides calculated dew-point and wet bulb temperatures. After some searching I found what seems to be the OEM device which Extech rebadges. The original device seems to be […]
I photographed this bird in a native garden in South Australia. Details Date 28 Dec 2017 @ 18:25 Location Mt Compass, South Australia, Australia Camera EK-GC200 ƒ/5.8 1/30 73.3mm ISO500 Copyright 2017 Darian Cabot More details Wikipedia
I photographed these honeyeaters in a native garden in South Australia. Details Date 27 Dec 2017 Location Mt Compass, South Australia, Australia Camera (photo 1) EK-GC200 ƒ/5.5 1/15 57mm ISO100 Camera (photo 2) EK-GC200 ƒ/4.8 1/30 38.6mm ISO800 Copyright 2017 Darian Cabot More details Wikipedia
I recently wrote a bash script that automates a database backups to zipped files on a Raspberry Pi. I would then periodically SSH in and transfer the backup files. This was a simple temporarily and manual solution, but I wanted a way to automate sending these files to a remote backup. I use AWS quite […]
Recently I had the need to upgrade MySQL on a Raspberry Pi running the latest standard distribution version of Jessie. I needed to use the JSON data-type as a MySQL field. My Raspberry Pi (as of April 2017) was running MySQL 5.5.52, but I needed 5.7+ for the JSON data-type. Update MySQL I’m providing these […]
I photographed this woodpecker in Los Angeles. Details Date 27 Jan 2017 @ 16:10 Location Griffith Observatory, Los Angeles, CA, USA Camera EK-GC200 ƒ/5.9 1/13 86.1mm ISO100 Copyright 2017 Darian Cabot More details Wikipedia
In this video we take a detailed look at the SCA 300W Power Inverter and review its performance in detail! I explain what a modified sine wave inverter is and how it’s different from a pure sine wave inverter, and it best applications in the field. * This product was provided to us by Supercheap […]
These hooded dotterels (or hooded plovers) photographed on Kanagroo Island Details Date 3 Oct 2016 @ 14:29 Location Vivonne Bay, Kangaroo Island, South Australia, Australia Camera EK-GC200 ƒ/5.9 1/400 86.1mm ISO100 Copyright 2016 Darian Cabot More details Wikipedia