Mottramlabs.com

Keeping it simple since 2018

Single phase mains power sensor using a current transformer (CT) (not included) and an ESP8266. Two versions are available, one for the Wemos D1 Mini (not included) and one for the Node-MCU Board (also not included). The CT used can be either a "Current Type" of CT like a SCT013 100A/50mA or a "Voltage Type" CT such as a SCT-013 100A/1V available on eBay. Other CT sizes such as 30A or 50A can also be used. Link selectable between voltage (1V) or current type of CT (mA). The CT plugs into the sensor PCB and the ESP8266 board (Wemos D1 or Node-MCU) using the analogue input of the ESP8266 to measure the mains current draw.

Link options: mA for current (output) type CT's. 1V for voltage (output) type CT's.

Board Versions

● MLP201083 - For Wemos D1 Mini

● MLP201162 - For Node-MCU Wide With 27.9mm (1.1") Row Spacing

● MLP201208 - For Node-MCU Narrow With 22.8mm (0.9") Row Spacing


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

Specification:

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PCB Size Wemos Version:

41.0mm x 32.1mm x 20mm

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PCB Size Node-MCU Versions:

58.4mm x 31.7mm x 20mm (Node-MCU Board = 58mm x 31mm)

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Weight:

8g (Without ESP8266 Board)

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Connections:

3.5mm Jack for CT

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LED:

SMD LED, connected to D4 (GPIO2 - GPI04 optional)

Included:

⬦

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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The customer is responsible for all customs duties and import taxes

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Payment must be received within 4 working days of purchase, however if this is not possible, please let us know to discuss solutions.

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You will be notified on the day that your goods have been despatched via e-mail.

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Once you receive your goods, please inspect them for any damage during transit, and report the said damage within 24hrs via e-mail.

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If all is well please leave feedback, so we are aware that you have received your goods.

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It is the customers responsibility to ensure that payment is received in the due time as listed above.

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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.