Expandable 6 Channel ESP32 Energy Meter Add-on Board

Description

Enhance the functionality of your energy monitoring system with the CircuitSetup Expandable 6 Channel Energy Meter Add-On Board. This add-on board is specifically designed to expand the capabilities of your existing 6 channel energy meter, allowing you to monitor up to six additional electrical circuits for each add-on board. Whether you want to monitor specific appliances, additional rooms, or different areas within a building, this add-on board provides the flexibility and accuracy you need.

This listing is for the Add-on board only – a main board and an ESP32 (see options below) is required to use this board.

Up to 6 add-on boards can stack on top of the main board to allow you to monitor up to 42 current channels in 16-bit resolution, in real time, all at once! Each add-on board can measure an additional voltage channel.

Features:

• Seamless Integration: The CircuitSetup.us 6 Channel Energy Meter Add-On Board seamlessly integrates with your existing 6 Channel Energy Meter, expanding its monitoring capacity without compromising performance. Effortlessly connect the add-on board to your meter and expand your energy monitoring capabilities.
• Expandable Monitoring: Monitor 6 additional electrical circuits with precision and accuracy, up to 6 add-on boards, for a total of 42 circuit monitoring channels. Keep track of energy consumption in specific areas or appliances, providing you with a comprehensive understanding of your overall energy usage.
• Accurate Measurements: Built with high-precision energy metering electronics, this add-on board ensures accurate measurements of energy consumption. Trust in its accuracy to track and compare energy usage over time.
• Real-time Data: Instantly access real-time measurements of power consumption, voltage, current, and other essential data for each added circuit. Stay up-to-date with your energy usage and make adjustments in real-time to optimize efficiency.
• Versatile Application: Whether you’re a homeowner, facility manager, or energy-conscious individual, the 6 Channel Energy Meter Add-On Board provides the versatility to suit your specific needs. Expand your monitoring capabilities in residential, commercial, or industrial settings.
• Optimized Energy Efficiency: By adding the 6 Channel Energy Meter Add-On Board to your existing system, you gain a more comprehensive understanding of your energy consumption patterns. Identify areas of improvement, track efficiency initiatives, and make informed decisions to optimize energy usage.

Technical Specs:

• Uses 2 Microchip ATM90E32AS energy metering chips – 3 current channels & 1 voltage per IC
  • 3 current channels (CT1-CT3 & CT4-CT6) & 1 voltage per IC
  • Measurement Error: 0.1%
  • Dynamic Range: 6000:1
  • Current Gain Selection: Up to 4x
  • Voltage Reference Drift Typical (ppm/°C): 6
  • ADC Resolution (bits): 16
• For each current channel the following can also be calculated by the meter:
  • Active Power
  • Reactive Power
  • Apparent Power
  • Power Factor
  • Frequency
  • Temperature
• Uses standard current transformer clamps to sample current
• 22ohm burden resistors per current channel
• 2 IRQ interrupts, and 1 Warning outputs
• Zero crossing outputs for each current channel
• Energy Pulse outputs per IC (4 per IC x2)
• Active Power LED pulse for CT1-CT3 & CT4-CT6
• SPI Interface

What you’ll need:

• Expandable 6 Channel ESP32 Energy Meter Main Board – add-on boards can not function properly without a main board
• Current Transformers (depending on your application)
  • SCT-006 20A/25mA micro CT (6mm opening – 3.5mm connectors)  – these are great if you have a lot of 15A circuits that you want to monitor
  • SCT-010 80A/26.6mA mini CT (10mm opening – 3.5mm connectors)
  • SCT-013-000 100A/50mA (13mm opening – 3.5mm connectors)
  • SCT-016 120A/40mA (16mm opening – 3.5mm connectors) – for monitoring mains
  • Others can also be used as long as they’re rated for the amount of power that you are wanting to measure, and have a current output no more than 720mA.
• AC Transformer: Jameco Reliapro 9v or 12v. The positive pin must be 2.5mm (some are 2.1)
• ESP32 (choose one):
  • NodeMCU
  • Espressif DevKitC
  • Espressif ESP32-DevKitC-32U or ESP32-DevKitC-VB (WROVER) if you need better wifi reception (don’t forget the antenna)
  • Anything else with the same pinouts as the above, which are usually 19 pins per side with 3v3 in the upper left & CLK in the lower right
• A 3d printed case (optional)
• Software (choose one):
  • Our custom version of EmonESP and the ATM90E32 Arduino library
  • ESPHome. Details on integration with Home Assistant are located here
  • Libraries for CircuitPython & MicroPython