OpenEnergyMonitor

Building Blocks

Arduino

Setting up the arduino environment

Electricity monitoring

• AC Power Theory - An introduction
• AC Power Theory - Arduino Maths!
• AC Power Theory - Advanced Maths
• AC Theory - 3 phase power
• Power in different countries (links to Wikipedia)

• Non-invasive current measurement
  • CT sensors - Introduction
  • CT sensors - Interfacing with an arduino
  • Report: Yhdc SCT-013-000 Current Transformer
  • Measurement implications of ADC resolution at low current values

• Non-invasive voltage measurement
  • Measuring AC Voltage with an AC to AC power adapter
  • Different AC to AC power adapters
  • Report: Mascot 9V AC/AC Adaptor
  • Report Ideal Power 9V AC/AC Adapter

• CT and AC power adapter installation and calibration theory
• Explanation of the phase correction algorithm
• emonTx accuracy test

• How to build a breadboard based arduino energy monitor with CT current sensing and AC - AC adapter voltage sensing. 
• How to build a breadboard based arduino energy monitor - current measurement only

• Arduino sketch - current only
• Arduino sketch - voltage and current

• Energy Meters

• Appliance inference - labs
• Extracting data from SMA SunnyBoy PV Inverters (Bluetooth)
• Extracting data from an SMA webBox

Overload Protection of Mains Electrical Circuits

Electricity monitoring firmware design

• AC Power Theory - Arduino Maths!
• Explanation of the phase correction algorithm
• Digital filters for offset removal

Pulse counting

• Introduction to pulse counting
• Interrupt based pulse counting
• Interrup based pulse counting with sleep code
• 12 input pulse counting
• Gas metering - can you improve this page?

Temperature

• DS18B20 temperature sensing
• PT1000 temperature sensing - need rewording, currently called a module.

Networking

• RFM12B - Part 1 - Hardware Overview
• RFM12B - Part 2 - Sending Data Between Modules (e.g emonTx, emonBase, emonGLCD etc.) 
• xbee
• zigbee
• ASK RF link
• Master/slave simple serial networking
• Ethernet

Displays

• emonGLCD
• 7segment
• Nokia 3310 and wireless Nokia 3310

Storage

• USB Pen drive data-logging
• SD Card logging

Control

• Relay

Diverting surplus PV Power, by Robin Emley

• Introduction, and “Power” v. “Energy”
• Detection and Measurement of surplus PV
• Diversion and Use of surplus PV
• Switching High Current Loads using a Triac
• Mk2 Controller Operating Modes
• Different ways of Measuring Voltage and Current
• Calibration of power and voltage, plus phase-alignment
• Building a Mk2 PV Router
• Different versions of the Arduino sketch

Firmware

See emonTx Firmware guide for simple Arduino sketch examples of firmware modules

Tools

• Using KST for graphing
• Java based Voltage and current sampling program
• Tutorial - programming a Nanode using Arduino board - No FTDI cable? step by step guide to programming using an Arduino board

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