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Giant Kiwi – Doing it with GPS
Many, many years ago I marked out a giant Kiwi using tape measures and grids. Now, thanks to my newly built RTK GPS base station, I decided to try it with GPS. I first had to get my…
Read More »New RTK GPS Base station
I’ve been running an RTK GPS Base station and feeding the data to rtk2go.com since early 2018. I was initially using a UBlox Neo-M8T which only worked on L1 frequencies, but earlier this year I upgraded it to…
Read More »U-Blox LEA-6H Precision
This is one of the many tests I’m doing to compare GPS/GNSS receivers. I’ve had this u-box LEA-6H unit for about five years. It was the GPS that came with the 3D Robotics ArduPilot that I’ve been using…
Read More »How precise is a circa 1999 Garmin eTrex?
This is the first of the tests I’m doing to compare GPS/GNSS receivers. I got my first GPS unit, a Garmin eTrex in 2001 and I used it to Geocache. It’s sat unused for over 12 years, but…
Read More »Measuring GPS (GNSS) Accuracy and Precision
With the recent technological advancements, I’ve recently become interested in RTK GPS and decided it would be fun to compare all the different GPS/GNSS (Global Navigation Satellite System) receivers I own. I ultimately plan to see how they…
Read More »Powering and Grounding 1Wire DS18B20 with Digital IO Pins
Sometimes you find yourself in a situation where your Micro-controller has plenty of spare IO, very little power & ground connectors, and you want to add a 1Wire DS18B20 device as tidily as possible. The classic Dallas 1Wire…
Read More »Converting the pinout on a Tycon POE-INJ-1000-DINx PoE injector
Tycon power sell a relatively cheap high power gigabit PoE injector. The high power bit means that it inserts power on all four ethernet pairs. This is important when using PoE to power devices over long cable lengths,…
Read More »Cheese fridge repairs
My cheese fridge was partially destroyed at the start of July. A car crashed into a power pole carrying both a 22kv distribution line and the 230v line for our house. They . touched . briefly It turns…
Read More »Modifying float voltage of a TP-SCPOE-1224
Adjusting the float voltage of a Tycon Systems TP-SCPOE-1224 The Tycon Systems TP-SCPOE-1224 is a Solar and Power over Ethernet powered DC UPS. You connect it up to a 12v battery, power it over ethernet, add an optional…
Read More »Power meter optical pulse detection
I’ve always planned to monitor my electricity usage. I had previously (about a year ago!) ordered some power transformers from seeedstudio and a six channel ADC for simultaneous three phase current and voltage measurement but never got around…
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