Author: John
1,500,000,000 the Epochening
Don’t forget that at 2:40am, 14 July 2017 (UTC) the Linux epoch will hit 1,500,000,000 (1.5 Gigaseconds). Visit https://www.john.geek.nz/epoch to watch the excitement! It hit 1,000,000,000 back in September 2001 and it won’t hit 2,000,000,000 until May 2033.
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…
Read More »Wiring up the ESP8266
Before you can program the ESP8266, you need to wire it up. First things first, the ESP8266 uses a 2mm pin spacing so you can’t use a standard breadboard as these use a 0.1 inch spacing. It also…
Read More »Introducing the ESP8266
About a year ago I put up some money for the Wino-Board kickstarter project, received my Wino-Boards and did nothing with them for 12 months. They are effectively a tiny Arduino board attached to the innards of an…
Read More »Fridge Wiring
My Humidity controller finally arrived this morning so I’ve started wiring up the control box.
Read More »Fans in the Fridge
I’ve finally found a bit of time to get my fans installed in the fridge. I’m still waiting on the humidity controller to arrive from China. Everything else took about 8 days to arrive, but the humidity controller…
Read More »Drilling vents in the fridge
When I was investigating the wiring diagram of my fridge freezer, I was also trying to find out if there is anything important in the divider between the fridge and freezer. Based on the diagrams I was confident…
Read More »Ordering parts for the cheese fridge
After working out how my fridge works, I’ve now decided what I’m going to do to make it into a cheese fridge.
Read More »Understanding how a fridge freezer works
The fridge I’m using for my cheese fridge is a fridge freezer, this means that during normal operation, the two boxes are different temperatures – around 20 degrees C. I want both the fridge and freezer to operate…
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