EnergyMonitor

Arduino energy monitor, using SCT-013-030 current sensors

Project Links :

This is a full energy monitor project :

You can manage 1 to 6 sensors.
You can configure it through USB (see below).
It can communicate through USB, with any homemade software.
It can communicate with any Home Automation System supporting MySensors (I'm using Domoticz).
Full source is provided, you can customize it.

Needed parts :

For each sensor :
- 1x SCT-013-030 current sensor (AliExpress).
  - It also works with SCT-013-000 (AliExpress) (see below).
- 1x 3.5mm Audio jack socket (AliExpress).
- 2x 100k Resistor (AliExpress).
- 1x 10µF Capacitor (AliExpress).
1x NRF24L01 wireless module (AliExpress).
- 1x 10µF Capacitor (AliExpress) (see below).
1x Arduino Nano (AliExpress).

Instructions :

Before to print case, you can specify how many sensors you have.
- You can define the exact number of sensors, or plan more. Each socket will be pre-cut for future use.
Follow joined scheme for assembly.
- Each sensor have to be connected to A0, A1 and so on...
Upload sketch to the Arduino Nano.
Connect it to any computer for configuration (see below).
Let's play...

Configuration parameters :

Number of sensors,
Sensor calibration (Vrms, ICal, IOffset),
Sample frequency,
Transmission frequency,
Toggle MySensors on/off,
Toggle serial output on/off.

Configuration will be saved to eeprom.

Using serial console, you can communicate with the sensor. For example, using minicom (? for show help) :

$ minicom -b 115200 -D /dev/ttyUSB0

 __  __       ____
|  \/  |_   _/ ___|  ___ _ __  ___  ___  _ __ ___
| |\/| | | | \___ \ / _ \ `_ \/ __|/ _ \| `__/ __|
| |  | | |_| |___| |  __/ | | \__ \  _  | |  \__ \
|_|  |_|\__, |____/ \___|_| |_|___/\___/|_|  |___/
        |___/                      2.3.1

Energy Sensor has powered up

Energy Sensor (can use up to 6 sensors)
F0: : Sample frequency in seconds (F0:5)
F1: : Send frequency in seconds (F0:60)
E#:[0|1] : Enable Sensor # (E0:1[;E1:1])
V<#:val> : Set Vrms (V0:230[;V1:230])
C<#:val> : Set ICal (I0:29.95[;I1:29.98])
O<#:val> : Set intensity offset (O0:0.05[;I1:0.07])
S[0|1]   : Toggle Serial output
T[0|1]   : Enable MySensors transmission
M<#>     : Sensor mode (1: power, 2: current, 3: power+current)
all commands are case insentitive

F0:2;F1:60
E0:1:V0:230:C0:29.40:O0:0.01
E1:1:V1:230:C1:32.00:O1:0.05
S0;T1
M3

Latest lines show current configuration.

Warning : If you are using SCT-013-000 instead of SCT-013-030, you have to add burden resistor. NRF24L01 may have connection issues. You have to add 10µF capacitor between PWR and GND.

You'll be handling dangerous voltages. I decline any responsibility in case of any incident or accident.

BmdOnline/EnergyMonitor

EnergyMonitor