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Broken Beer Fridge!
My beer fridge that chills three kegs of beer broke overnight! An urgent fix is on the cards!
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…
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 »Petit Studio Raspberry Pi HDMI extender cheap cable fix
Note: This fix is NOT due to a fault of the Petit Studio Raspberry Pi Camera extension kit, it’s due to the use of cheap HDMI leads. I brought some Petit Studio Raspberry Pi HDMI camera extenders from…
Read More »EP Solar MPPT Tracer charge controller serial code
Following on from my previous post working out the EP Solar Tracer serial protocol, I’ve got code working on a Raspberry Pi. It’s even validating the CRC checksum.
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