3D printed contactless payment ring - A tutorial on NFC antenna coil design
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- เผยแพร่เมื่อ 4 ก.ย. 2015
- In this video I talk about NFC antenna coil design and how I applied the concepts to put my contactless payment card into a 3d printed wearable ring.
References:
NFC TagInfo Android App by NXP
play.google.com/store/apps/de...
Coil inductance calculator:
www.eeweb.com/toolbox/coil-ind...
LC resonance frequency calculator:
www.1728.org/resfreq.htm
PCB NFC antenna design tool by ST:
www.st.com/web/en/catalog/mmc/...
Some application notes with much more information on the subject:
ww1.microchip.com/downloads/en...
www.st.com/st-web-ui/static/ac... - วิทยาศาสตร์และเทคโนโลยี
You certainly deserve a subscription. Didn't expect to have enough time to complete 24 minutes video, yet your simple approach made me watch the whole thing. well done.
This has got to be one of the best videos I've seen - excellent preparation and implementation. Clear and easy to understand. Thank you !
I've been developing NFC mobile application for more than 10 years now. I think that if we have meet each other before, we would have create a really innovative product together.
You should be a very good professor. Congratulations
Great video, no bullshit fluff, incredible explanation and showcase. Please come back and make more videos Mr UltraTechie.
Excellent explanation of how NFC works. Congratulations!
this is awesome. inductive coupling blows my mind.
Wonderful Explanation, as comprehensive as it can get. Thanks for the video!!
Great video man, thanks a lot. Nice and clear explaination, interesting subject, great audio and video quality. 10/10 Looking forward to your next video!
Ultra informative thanks you've got another dimension of knowledge thanks for sharing definitely subscribing
Thank you very much for making this video, it is very very helpful! I searched and read some guides in pdf format but your video is much easier to understand. Thanks a lot for your effort!
Simply beautiful!
So well explained. This is awesome, thank you so much!
Amazingly educational. Great job. Thanks for that one.
I learned SO much from this video, thanks for making it!
Great video! Prototyping some NFC chips soon. This video helped me a lot. Thanks!
Picked up the same tag IC and used some 36 AWG magnet wire and the links provided. Worked like a charm. ST has an app that will let you read/write to the tag as well. Thanks UltraTechie.
Very Informative Video. Thanks for creating this!
You have done a wonderful job, really appreciate your Hardwork? God Bless you.
Perfectly explained, thank you
Really superb. Presentation is excellent.
Excellent work sir, great video!
Highly informative. Thanks!
Great video!
Still such a great video, really educational and interesting.
Thanks a lot !!! I have all the infos I need to tune my own NFC ring now :)
22:20 I liked the fact that you were able to make it work vertically and horizontally. any diy guide on how to do it?
Goodday, did you make it too? The vertical orientation wont work for me.
Hi,This video was emaizing to understand Transmitter.
great explanation. thank you
awesome video sir. Thank you.
Thank a lot man, so great video.
This an excellent video! Could you please explain something more about the setup of the test fixture to measure the antenna?
Regards
Jens
Really helpful! Well explained. Is there any tool you would like to suggest for designing a multi-layer PCB coil for the NFC tag? I have been trying to design one for an application with a space constraint. Also, could you also share more about the Multi-directional antenna coil you mentioned?
Thanks!
You are a legend !
nicely explained
Thank you for this really helpful video! I am wondering how it is possible that the M24SR02-Y is still working at a frequency of 23.5 MHz (15:04) ? The datasheet says that the frequency range ist just between 13.553 and 13.567 MHz (p. 78)?
Hi, great video, but one thing I cannot figure out: your datasheet specified internal capacitance of 50, but you used 25 in the resonant frequency calculator. What is the reason you divide by 2?
Great Vid
Can you share a pencil sketch of the test setup connection for the antenna coil. I have designed an antenna and the tuning is a little of the mark, want to tune it.
Do you use S11 or S21 on spectrometer analyzer?
Can u tell me the capacitance of the credit card nfc chip
can you share "3D printed ring" files and also share how did you achieve 3D antenna surface area ?
Hey, hope you can help me, trying to make something using this chip as an Xmas present but I can't seem to expose the tracer, like it's covered in plastic that's tougher than the metal under it, any advice?
slowly scrape the plastic off using a sharp edged hobby knife, that is what I did
Nice experiment! Nice explanation! Great links! How this is related to a 3D printer as claimed the title?
Thanks. The basic structure of the ring was 3d printed and then the coil/tag was added on the 3d printed part.
Great job!!
MrCyberSquad friend
Goodday ultratechie do you have a tutorial for the 360 nfc ring? I did try to make it but the vertical orientation wont work for me. Any tips or guide would be really helpful. I dismantled 4 of ntag215 and successfully extracted 2 out of 4. Only parallel orientation worked on my newly made coils for the ring i will make.
Hoping for your reply soon. Btw i used a 0.1mm wire. Range 1cm worked for 8rounded wires., more than that will make less 1cm range for me.
Good day again ultratechie, what do you call the winding you did to the 360 nfc ring? You coiled it top to bottom 9 slots? How did you make it possible to take the perpendicular orientation when scanning? Hoping for your guidance please.
Ummm. I did it lol. I rewinded my coil a bit wider spacing, not in bulk or same position. Your design is cooler though. Since i got a thiner wire i did have trouble but again as you said the surface area is a must. So wider spacing for my 7 rounds of 0.1mm wire to achieve both sides of the orientation to be detected by nfc scanner, skin effect and proximity related maybe? Thanks again ultratechie.
what if i want to make my own external NCF antenna? what i must to do.?
external to what ?
so.. i have an idea. im sure you know of nintendo amiibos, yes? they make them so they cannot be used while still in box, so, one way of the other, you need to take a knife to the box to use it. what want to do, is see if i can run a wire(cut like a half inch slit in the back if the amiibo box) and runt he wire from the amiibo base, to the nfc reader device. can this work? thanks.
Hi, I dont think that will work. But you could probably open the base and add a better antenna to increase the range.
If you cannot clone nfc cards, how did you put yours on a ring😭
But the ring you have been using has no capacitor?
this is explanation not tutorial. please do a tutorial video DIY from scratch until usable ring payment