Controlling 433MHz RF power sockets straight from an RFM12B module – appliance switching without wiring a single relay.
Sensing Shield #1 in action
Sensing Shield #1 installed at the breakers box – 9V AC/AC transformer in place, logging voltage, power factor and real power usage.
Software only solution for feeding weather data to emoncms
Feeding weather data to emonCMS with software only – no hardware, an online weather source covers humidity, pressure and wind.
RFM12B and Arduino Ethernet with WizNet5100 chip
Getting the RFM12B and an Arduino Ethernet (WizNet5100) to coexist on SPI – working around the nasty W5100 bus bug.
Sensing shield PCB ready
The Sensing Shield PCB is ready and partially populated – first tests looking good.
Arduino shield for energy monitoring
My first Eagle PCB project: an Arduino shield that turns the spaghetti heat pump monitoring setup into something orderly, EmonTX based.
Monitoring of my heat pump performance
Instrumenting my home-made Daikin heat pump hack with sensors – constant logging to prove whether the conversion is actually efficient.
Hacking Daikin split type air conditioner into air-to-water type heat pump
How I converted a Daikin split air conditioner into an air-to-water heat pump for heating, cooling and hot domestic water at my house.
Custom defrost algorithm for Daikin heat pump
My Daikin heat pump defrosts on a dumb 45-minute timer, so I built a custom defrost algorithm that only runs when actually needed.
Control Daikin air conditioner over the Internet
Adding Internet remote control to my Daikin FTX71GV/RX71GV based heat pump – house heating and cooling from anywhere.
Setting up WordPress
Setting up WordPress as the CMS for this site – the very first post.