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Products => Crowd Funded Projects => Topic started by: malcolmmackay on September 12, 2021, 02:01:35 pm

Title: 39 USD: the cuplTag NFC datalogger
Post by: malcolmmackay on September 12, 2021, 02:01:35 pm
Hi All,

Here is a 10 second product demo:
https://youtu.be/T-029DnE3-o (https://youtu.be/T-029DnE3-o)

And the link to Crowd Supply:
https://www.crowdsupply.com/cupl/cupltag (https://www.crowdsupply.com/cupl/cupltag)

(https://www.crowdsupply.com/img/e01f/cupl-board-front-back-01_jpg_project-body.jpg)

cuplTag is an open source hardware (https://github.com/cuplsensor/cupltag) datalogger with an average current consumption of 500nA@3V. This allows for multi year battery life.

Details on how it works:
1) Every 10 minutes it wakes up to read temperature and humidity.
2) Samples are written to a circular buffer on an NFC EEPROM.
3) The buffer is base64 encoded and forms part of a URL.
4) A web application (also open source (https://github.com/cuplsensor/cupldeploy)) opens automatically when the cuplTag is tapped by a phone.
5) The web app unwraps the circular buffer, extracts samples and plots these in a graph.

No app needs to be installed on the phone to view temperature and humidity samples on the tag. Use of a web application means that data can be shared with others or viewed on a PC easily.

If you like what you see, please support me on Crowd Supply! Any questions, I am happy to answer on here.
Title: Re: 39 USD: the cuplTag NFC datalogger
Post by: dunkemhigh on September 14, 2021, 04:34:42 pm
Jolly clever idea. Well done  :-+

Thought about grabbing one, if only to encourage your next idea, but shipping and VAT (to a UK address) essentially doubles the cost. Just a bit too far out of my reach, sorry.