Hedda
commented
3 years ago FYI, @akshar001 posted to ESPHome discussion that they also have plans to make a less expensive NFC-only model as well:
Closed Hedda closed 2 years ago
Hedda
commented
3 years ago FYI, @akshar001 posted to ESPHome discussion that they also have plans to make a less expensive NFC-only model as well:
matjack1
commented
2 years ago @Hedda I'm closing this as we don't have the hardware, but we are very open to a PR whenever someone wants to do it. Thank you for the suggestion though!
Hedda
commented
2 years ago @Hedda I'm closing this as we don't have the hardware, but we are very open to a PR whenever someone wants to do it. Thank you for the suggestion though!
@akshar001 (Akshar Vastarpara) from Vicharak would probably send you a prototype or sample if you ask him directly, see:
Hedda
commented
2 years ago By the way, also check out his esphome custom component repo for chhavi:
https://github.com/akshar001/chhavi_esphome
I believe it makes use of the NFC_LIB library/driver for pn7150 from his chhavi repo:
https://github.com/akshar001/chhavi
https://github.com/akshar001/chhavi/tree/main/Firmware/Arduino/NFC_LIB/
matjack1
commented
2 years ago thank you @Hedda for the interest, but I've checked again and I just noticed that it runs on an ESP32. It's something that we might support in the future, but for now it's too far off :( So I don't think it makes sense for me to ask that hardware when I don't really know if/when we are going to support the underlying hardware :(
I'm sorry about that as it really looks interesting, but it looks like a non-trivial endevour.
Do you think that the NXP PN7150 module based NFC tag reader (instead of the PN532 sensor which esp-rfid already supports) as well as an "FPC BM-Lite" fingerprint sensor used in this ESP32-based "Chhavi" product can be supported by the ESP RFID project?
https://www.crowdsupply.com/vicharak/chhavi
@akshar001 from Vicharak has launched "Chhavi" ESP32 based fingerprint and NFC reader product as a crowdfunding campaign on Crowd Supply.
"Chhavi is a compact, wireless, touch-capacitive fingerprint sensor based on ESP32 WiFi and Bluetooth SoC that is offered with optional NFC connectivity and a battery."
It says that it can also optionally be powered by a battery by using smarter sensors and a battery management system.
Not cheap but it have to say that its very compact size makes it looks very nice. BTW, I first read about it on CNX-Software blog:
https://www.cnx-software.com/2021/10/08/chhavi-esp32-fingerprint-sensor-nfc-battery/
"FPC BM-Lite" fingerprint sensor module by Fingerprints
https://www.fingerprints.com/technology/hardware/modules/fpc-bm-lite/
https://www.fingerprints.com/solutions/access/bm-lite-development-kit/
NXP "PN7150 NFC controller"
https://www.nxp.com/products/rfid-nfc/nfc-hf/nfc-readers/high-performance-nfc-controller-with-integrated-firmware-for-smart-devices:PN7150
https://www.nxp.com/docs/en/data-sheet/PN7150.pdf
NFC Specifications & RF Protocols
¹ ISO/IEC 18092 (NFCIP-1) edition, 2013-03-15. This is similar to Ecma 340 ² ISO/IEC 15693 part 2: 2nd edition (2006-12-15), part 3: 1st edition (2001-04-01) ³ ISO/IEC 14443 parts 2: 2001 COR 1 2007 (2007-11-01), part 3: 2001 COR 1 2006 (2006-09-01) and part 4: 2nd edition 2008 (2008-07-15) ⁴ NFC Forum Device Requirements V1.3 ⁵ ISO/IEC 15693 part 2: 2nd edition (2006-12-15), part 3: 1st edition (2001-04-01)
For those that want to know, the PN 7150 offloads NFC library code onto the controller so it does not have to run on the ESP. Also, it has about 150th the power usage of the PN 532, so if you can run it on a properly designed ESP32 board with a slow polling interval then should be able to operate on battery alone, though as a battery-operated wireless IoT sensor there would be some latency to get on Wi-Fi unless your WiFi has been designed to handle such devices.
PS: I'm just a home automation enthusiast and have no affiliations or connections with Chhavi and Crowd Supply or any others.