Energino: an Arduino-based energy consumption monitoring shield

Energino is a plug-load meter that measures the amount of power consumed by whatever DC electrical appliance is plugged into its. It was originally designed to monitor the energy consumption of simple networking devices such as Ethernet switches and WiFi access points, but it can be used to monitor any DC appliance. Energino "sits" between the power supply and the actual device being monitored. Energino is also equipped with a mechanical relay allowing you to turn on/off whatever appliance that is plugged into it.

It has the following basic features:

* Supported load voltage: 0-60V
* Supported load current: 0-5A
* Sampling rate: up to 5000 Hz
* Sampling resolution (voltage): 60mV
* Sampling resolution (current): 30mA

Moreover,  when used in combinations with an Ethernet shield it supports:

* push interface to COSM (formerly Pachube) 
* REST interface for polling current energy consumption and for turning the attached device on/off 

Step 1: Bill of materials

In order to assemble an Energino shield you will need:

Energino PCB from Fritzing or a Proto Shield
ACS712 Low Current Sensor Breakout
Resistors 10K x2
Resistor 1K
Resistor 100K
Diode 1N4001
Transistor NPN 2N3904
Screw terminals (2 Pin) x2
Relay Omron G6E-134PL-ST-US
Arduino Stackable Header - 8 Pin x3
Arduino Stackable Header - 6 Pin x1











 

Comments

[mykiscool]

This is cool, the only thing however, is that I would like to see it accept up to 120 volts in the future because many household appliances use that voltage.

[roberto.riggio]

We the point is that I was not confortable with working with the mains at home. This project is meant for DC devices such as access points, adsl routers, etc.