by cupl

A tap-to-read NFC tag that logs temperature and humidity

View all updates Sep 09, 2021

Crowdfunding Begins!

by Malcolm Mackay

A Battery-Powered NFC Tag That Logs Ambient Temperature & Humidity

Tap it with an NFC-enabled phone and you will see timestamped readings appear in a web application. It’s a one-step operation that requires no configuration and no app installation!

I am pleased to be launching the cuplTag crowdfunding campaign here on Crowd Supply. It has taken many design iterations over the course of five years to get the product to this stage. I am now confident it is good enough to share.

I hope you enjoy using cuplTag. If you like the concept, please share our campaign page with your friends!

About the Author

Malcolm Mackay


$858 raised

of $1 goal


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One cuplTag, factory configured to sample temperature and humidity at 10 minute intervals. Works with the cupldeploy platform. Requires a CR1220 battery (not included). Includes one 2x4-way 2.54 mm male header, one 1x2-way 2.54 mm male header, one 2-way 2.54 mm jumper, and printed instructions.


MSP-FET Flash Emulation Tool

From the Crowd Supply Basics project.

Connects any MSP430 MCU to a computer via USB for real-time, in-system programming and debugging. Includes a 14-conductor cable for board communication and a USB cable. Manufactured by Texas Instruments.


40 Jumper Wires - Female/Female

From the Crowd Supply Basics project.

A bundle of 40 multicolored, 7.8" (200 mm) long silicone-coated 24 AWG jumper wires with female terminations on each end. They are designed for use with standard pitch (.1", 2.54 mm) male headers.



cupl develops NFC environmental sensors.

Malcolm Mackay

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