by cupl

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

Sep 21, 2021

Introducing a new feature

To show our appreciation for the support we've received so far, we've got a hot new feature for you! Read the full update.

Sep 14, 2021

PCB Fabrication Is Completed for 250 Units & Transfer of Materials Is Underway

Our CEM reported this morning that all is going well. Production of 250 PCBs has been completed. Parts they are sourcing have arrived. A package containing the remaining reels (U1, U2, U3, and BT30) was shipped by us (Plotsensor, Ltd.) from the UK on Friday. It has arrived in China and is awaiting customs clearance. A package containing 250 white enclosures (1551V3WH) has been dispatched from Digi-Key to us in the UK. Read the full update.

Sep 09, 2021

Crowdfunding Begins!

cuplTag is a battery-powered NFC tag that logs ambient temperature and 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! 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. Read the full update.

$936 raised

of $1 goal


Pledge Now



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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