Chhavi

by Vicharak

A wireless, open source, ESP32-based fingerprint sensor with optional NFC

View all updates Oct 07, 2021

We Are Live!

by Akshar Vastarpara

When we first started designing a small, wireless module for universal fingerprinting applications, we did not think to include NFC capability. Our goal was to provide a device with smartphone-level speed, precision, and reliability, as well as capacitive touch support so the ESP32 at its core could be awakened from deep-sleep mode when needed. That gave us a low-power, battery-capable fingerprint module with the ability to communicate over Wi-Fi or BLE.

Then came USB support, which is essential as a way to add fingerprint-based authentication to PCs, including desktop systems without Wi-Fi or Bluetooth hardware. At that point, we realized we were approaching something truly universal, so we decided to go the extra mile and add optional NFC support. (The fact that we’d never seen an NFC controller on an ESP32 board made this an even more interesting challenge.)

And now here we are. Chhavi is an easy-to-use, all-in-one, ESP32-powered module ready for whatever wireless fingerprinting application you might have in mind.

About the Author

Akshar Vastarpara

akshar001


$1,614 raised

of $20,000 goal

8% Funded

Pledge Now

$49

Chhavi - Fingerprint Sensor Only

Chhavi with an FPC BM-Lite fingerprint sensor and a 3D-printed stand.


$59

Chhavi - Fingerprint Sensor & NFC

Chhavi with an FPC BM-Lite fingerprint sensor, a NFC controller, an antenna module, and a 3D-printed stand.


$59

Chhavi - Fingerprint Sensor & Battery

Chhavi with an FPC BM-Lite fingerprint sensor, a 200 MAh battery, and a 3D-printed stand.


$69

Chhavi - Fingerprint Sensor, NFC, and Battery

Chhavi with an FPC BM-Lite fingerprint sensor, a NFC controller, an antenna module, a 200n MAh battery, and a 3D-printed stand.

Credits

Vicharak

Electronics was just all about engineering at the beginning, but the hacker community turned this industry into an artistic creative fun thing. We, Vicharak, are particularly interested in developing various kinds of hardware which will eventually serve people and hackers. We have already launched our first campaign with Maypole and some more cool projects are in the pipeline too! We want to try every possible electronics segment which can be hackable and make it more easily hackable. Our main goal is to develop simple solutions with major features.


Akshar Vastarpara

Team Lead

Harit Shukla

Hardware Developer

Jagrutkumar Vaghela

Hardware Developer

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