IPEC, IoT Power Energy Controller and Monitor, is a 3 phase (or 3 x 1 phase), High-performance Mains Electricity Power Energy Monitor SDK board, designed for Home Automation.

• This product is the version of the board with an Espressif ESP32UE (U.FL Connector External PCB Antenna), an ATM90E32 Energy Monitor and a MCP4728 DAC 
• A Separate IPEX Expansion Board is available, which allows both DAC and ADC Connections.

Antenna

As shown in the above table, IPEC board Antenna options include:

• ESP32E – Internal Wi-Fi/BT antenna (on the ESP32)
• ESP32UE – External Antenna (via U.FL).

The external antenna option will extend the Wi-Fi range if required, or where the IPEC board is housed in a metal enclosure.  On the external antenna boards, use is made of the U.FL connector on the ESP32-WROOM-32UE-N4.  An example of the folded external antenna is shown the photos.

Board Feature Overview

Further details can be found on this expanded comparison chart.

• Current Clamp Inputs
  • IPEC has three main CT Clamp inputs, for Current Measurement Options:
    • 3 x Single phases (such as Mains In, Solar Inverter, Power Circuit etc.)
    • Full Three Phase (3φ. Voltage on each phase is 120 degrees phase shifted, relative to each of the other phases)
    • Split Phase (Dual Phase A and B. Such as USA 2 x 120V)
  • The board has three, or four, standard 3.5mm sockets fitted, so the CT clamp can just plug in.
  • Solder pads are also provided on each current clamp input, where the 3.5mm connection is not available.
  • Burden resistor can be optionally enabled via a solder pad (Not needed for Standard Measurements)
  • Example of CT clamp are the  popular split-core YHDC SCT-013-000 (using a standard 3.5mm mono jack plug).
• Voltage Inputs
  • IPEC has three voltage inputs for safely monitoring mains voltages.  This achieved using a voltage derived from a SELV / Wall AC/AC Power Supply.
  • Voltage Inputs. You can use a single voltage, or multiple voltages input.
  • Three solder pads are provided, with a common ground.
  • Solder Options
• DAC 
  • On-board MCP4728 DAC
  • 12bit – 4 Channels
  • Modulated PWM Output
• Expansion Port
  • I2C and Two channels DAC or PWM Output
  • IPEX Expansion Board Interface
  • JST 6W SH Header
• Board Power
  • IPEM has an on-board SMPS DC Power Supply, which is derived from the AC Power Input,   via an AC terminal block / solder pad, for normal operation.
    • This achieved using a SELV, Wall AC/AC Power Supply.  The supply needs to be 8 to 12 V AC RMS – Ideally 12V.
    • Examples of a suitable Low Voltage 4 to 12V AC power supplies are bell transformers such as the TR7, Byron Din Rail, or DATA01A Transformer.  These may vary in different countries but local sourcing should be straight forward.
• Flashing and Code
  • The IPEM board has a complete Wemos D1 ESP32 Mini compatible interface.
    • Allows ease of interfacing such as from Arduino IDE and Platform IO.
  • The USB input (via Micro USB), can also power the board when developing code.
    • The board can safely have both USB power and AC Power at the same time.
• EEPROM
  • On-board 24C64 EEPROM
    • 64-Kbit (8K x 8 bits)
    • Easy storing of parameters, Logs etc.
    • Accessible using standard I2C EEPROM library
• OLED Display
  • Should you wish to add a display to the IPEM board, a four pin header is provided.
  • Power pins are configurable for pin 1 and 2.

Board Configuration

Solder configuration pads are provided on the bottom of the PCB.

Specification of IPEC/IPEX Family

The IPEC board is suppled fully tested.  You will require to flash your specific code, or from our examples on GitHub

In the Box

• IPEC ATM90E32 ESP32UE board – U.FL External Antenna Version

You will need to update the firmware with your preferred open source firmware, using a standard micro USB cable (not included).  Working examples of test code can be found in our Wiki and GitHub

• 1 x IPEC-1 ESP32UE Board
  • SMD (Surface Mounted Components) Populated.
  • Fully Tested
• 2 x Terminal Blocks (2 Pin and 4 Pin – Not Soldered)
• 1 x Strip of straight pin header
• 1 x 4 pin header socket (Not Soldered)
• 1 x 6W JST Header Cable
• 1 x Complimentary screwdriver

Available Separately

• Enclosure
• OLED 0.96″
• Folded 2.4 GHz Antenna with U.FL Connector
• YHDC Current Transformer SCT-013-000 (100A/50mA)
• Transformer 12V AC

Further Information

Further details and code can be obtained on our website ditronix.net or GitHub  github.com / ditronix 

Project information is also available on hackster.io / ditronix

Tags

24LC64, 3-Phase, 3Phase, 3x1 Phase, Arduino, ATM90E32, ATM90E36, Bell Transformer, CH340, D1 Compatible, Domoticz, EEPROM, Energy, Energy Monitor, ESP32, ESPHome, Grid, IPEM, GTEM, GTIL, Home Automation, IoT Home Automation, Mains, Monitoring, SCT-013-000, SDK, Solar, SSD1306, Three-Phase, Tie, YHDC, YHDC SCT-013-000