ATM90E26 Single-Phase Energy Monitor Dev Kits

by whatnick

An open, affordable, and accurate energy monitor using ATM90E26.

View all updates Aug 14, 2017

Progress on DIN rail power/sampling board

I have been receiving a few questions regarding the 3-phase supplies and the DIN rail module. The DIN rail base-board is slightly over engineered and can handle 3-phases and 6-current transformers (+2 neutrals). Please see the below images for a first prototype under test. The metering module will sit in the PCI-E x1 slot and currently is specified to contain 1 or 2 ATM90E26 according to reward level, however it can be upgraded to a module with 1 or 2 ATM90E36 to handle 3-phases in the future.


Whatnick Inc

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Whatnick INC is a consulting engineering company mainly working in the Energy Monitoring arena. We aim to build open-source hardware and empower users to put their own monitoring solutions together.

Tishampati Dhar

Electronics Design Lead

Rany Thach

Logistics and Supply Chain

Gokul Shriyam


Andrew Karas

Enclosure Designs and MCAD

Fabrice Marre

Video Production



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