What is it?

Are you tired of unexpected energy bills and feeling powerless when it comes to monitoring your consumption? The Smart Powermeter is here to change the game!

With its support for a 2.9-inch e-paper display, the Smart Power meter provides real-time data on your energy consumption, giving you a quick overview of your grid's status whenever you need it. No more surprises, no more guessing.

Equipped with IoT capabilities, the Smart Powermeter easily connects to your favorite home automation systems such as Home Assistant. Monitor your energy usage, track trends, and make informed decisions to optimize efficiency and save money.

Installation is a breeze with the Smart Powermeter's integrated 230VAC -> 5VDC regulator. It taps into the surrounding wires, eliminating the need for complicated setups or additional power transformers. And with support for up to 6 CT clamps, you can monitor your full triphasic setup, or even each line going to a specific area!

Since it was carefully designed to fit into a commercially available enclosure, it brings support for DIN-rail mounting, so it can be easily mounted on your electric closet rack!

Features

• ESP32-S2 module. Since it is based on the extended ESP32-S2 microcontroller you can upload the ESPHome firmware through the USB-C port or OTA (Over the Air) with your Home Assistant setup.

• Accesible ports. Appart from jack connectors for up to 6 different CT-clamps, with or without a burden resistor, you can also access to the I2C and/or serial port and connect any sensor of your wish.

• Simple and clear. Check out quickly your home's electric consumption on the 2.9" e-paper screen. You can program your own data layout so you have everything you want to see at first sight.

• Log your data. Measure each of the phases arriving into your home, monitor each line going to a specific room or appliance (washing machine, kitchen stove), and send your data to your cloud (or domotic setup like Home Assistant) for long periods of time.

• Open-source. If you have any questions or suggestions about the design, just check out all the documentation and design files on my Github

For knowing more about its features, check out the online documentation.

What you buy

The available board to be acquired on Tindie is an SMD-pre-soldered board. In addition, it includes two THT components that you will need to solder:

• HLK-2M05 power module, a 2W AC-DC step-down switching power supply module.
• A 2P screw block terminal..

Besides the Smart Powermeter, you can add to your order:

• 296x128, 2.9inch E-Ink raw display panel: You can buy it together or at Waveshare

• Din-rail enclosure: You can buy it together or at LK Shiny Enclosure.

• CT clamps: One or two sets of 3 CT clamps with the different values:

• SCT-013-010 series, conversion rate of 10A:1V
• SCT-013-025 series, conversion rate of 25A:1V
• SCT-013-050 series, conversion rate of 50A:1V
• SCT-013-000 series, conversion rate of 100A:50mA

*For former consumers, the SCT-013-000 is the same CT model that was (optionally) included by default on the kit until 17/11/2024. For new consumers, note that this model is the only one not requiring to modify the burden resistor jumpers, any other CT model convertin current directly to V (xxA:1V) will require a small cut on the solder wires, as indicated on the documentation. *

Important notices:

The Smart Powermeter (V2R2) is recommended for people with experience in the field of electronics and/or programming, preferably individuals familiar with ESPHome and Home Assistant environments.

The installation of the Smart Powermeter should only be carried by people with good knowledge about high-voltage electric installations and familiarized with the procedure that involves installing ct-clamps around main voltages.