Hilo90mhz

Remote Power Monitoring system AC or DC current measurements

Cloud IOT Hosting / Storage Options Looked at in initial exploration of subject:

Example: http://www.openhomeautomation.net/cloud-temperature-logger-esp8266/

Github for above project: http://github.com/openhomeautomation/esp8266-cloud

http://dweet.io/

http://www.freeboard.io/

http://bsautner.github.io/com.nimbits/ – Desinged to be installed on local hardware like raspberry pi – is being maintained but does not seem to be highly used

http://platformio.org/

https://temboo.com

 

ESP EASY Firmware – The firmware option I am using

http://www.esp8266.nu/ works with a variety of cloud data options like www.thingspeak.com or local home automation software like http://www.domoticz.com/

 

Thingspeak – The cloud data storage and reaction engine I am using

https://thingspeak.com/ – seems like the best current open source option – repository is here https://github.com/iobridge/thingspeak

Example beehive monitoring using Thingspeak and Arduino (CC3000 wifi module)

Embed thingspeak chart in wordpress post

Install thingspeak locally

Fancy Multi Value Charts

weather station with large chart output : http://www.instructables.com/id/ESP8266-Weather-Station-with-Arduino-2-Software/?ALLSTEPS

Example using thingspeak + arduino uno + esp8266 https://elementztechblog.wordpress.com/2015/05/13/esp8266-based-temperature-data-logger-using-arduino/

Thing HTTP API 

reading data from channel as text string: http://api.thingspeak.com/channels/101562/field/6/last.txt

Node-Red

getting started tutorial presentation

 

Isolated Voltage Monitoring

Voltage sense transformer testing results from Arduino Forum – and another page in that thread with example schematic of usage

ZMPT107 2mA/2mA ZMPT101B

ZMPT107-DatasheetZMPT101B-Datasheet

 

DC shunt monitoring
– mainly for systems with existing shunts – current clamps are more convenient and practical for a new system.

INA219 I2C single channel digital current shunt monitor from TI

Adafruit makes a breakout board

 

INA3221 12C 3 Channel shunt amplifier product page from TI

$4.5 on Digikey

Switchdoc Labs has a breakout for $15

Arduino Library for INA3221

 

I2C Analog to Digital Converter 

ADS1115 I2C 16Bit 4 Channel (2 channel differential) ADC

Arduino library for additional software I2C

ESP8266 Analog Input

Using an external MUX IC to get extra channels

 

For 60V max input (48v battery system)

Divider = 68KOhm and 1Kohm for 60V max input Calculator

%value%*0.0655

60V = 60V 🙂

44V = 44.2V 🙂

 

For 20V max input (12V battery system) Calculator

Divider = 22K and 1.3K resistor

%value%*0.0606

12V = 12V

13.7V = 13.7V

AC Current Transformer

Calibration procedures from OpenEnergyMonitor

 

 

DC (or AC) hall effect current clamp options: 

YHDC HSTS21 Hall Split-core Current Sensor Input 600A Supply voltage 5V Blue

http://www.ebay.com/itm/161997752075

ADC to read these analog sensors with the ESP8266 which only has 1 analog input.

Adafruit breakout

Adafruit library

 


 

 

Hakalau System, actual inverters will be 3KW each for 21 KW max.

Outback FXR3048A 3KW 48V inverter max input current Continuous = 90A Peak = 150A

3_phase

Humidty Sensor SI7021

 

 

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