Mottramlabs.com

Keeping it simple since 2018

Single phase mains power sensor using a current transformer (not included) and a Wemos D1 Mini (also not included). The transformer used is either a "Current Transformer AC current sensor 100A SCT-013-000" or a "1V Output Currerrent Transformer AC current sensor 100A SCT-013-000" available on eBay. Link selectable between voltage (1V) or current type of C T. This plugs into the sensor PCB and the ESP8266 (Wemos D1) and uses the analog input of the Wemos D1 to measure the mains current draw. The Wemos is powered by it's micro USB input.

Warning: No direct connection should be made to any high voltage, use the Current Transformer as the manufacture recomends

Specification:

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PCB Size:

41.0mm x 32.1mm x 20mm (if Wemos D1 fitted)

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Weight:

8g (Without Wemos)

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Connections:

3.5mm Jack for CT

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LED:

SMD LED, connected to D4 (GPIO2)

Included:

⬦

10 x PCB Assembled and Tested

A simple 3D printable case design is available on thingiverse.com, search for Dimwit-Dave. Also the schematic and Demo firmware is available on Github, search for mottramlabs.

Terms and Conditions

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All goods are sent via Royal Mail second class post.

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Goods will be despatched within 24 hrs of cleared funds, subject to the conditions listed in the payment section above.

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We accept no responsibility for goods delayed due to the services of the Royal Mail.