Oh almost certainly the RF engineers at NXP, with $100k+ in analysis equipment and simulation software, wouldn’t do all that extra work for no reason.
Now what the point is would be a bit more difficult to nail down. It could have to do with eliminating parasitic capacitance between the traces to allow more accurate estimation of the inductance value while designing. If you review this test board I made you’ll see that the coil design where I split half the turns on the top of the board and half on the bottom was spot on to the calculated Inductance using NXP’s formulas.
It makes sense that they would need that accuracy for the field detector board, because there’s no tuning capacitor, the LED is the the tuning cap (and a small one at that). Doing it this way could also present a lower impedance so that more power could be delivered from the reader, which would also make sense for lighting an LED.
@anon3825968@darthdomo Only other thing I wanted to add was that I did check out Amal’s post you linked and I totally see what you mean and how he credits amber to be the dimmest, but I would like to also point out he’s saying that in reference to the 4 different colors of the same LED, which at that particular brightness, or with that particular line-up of 4 LED’s that the green was brightest and that Amber/Red was the dimmest. I can’t tell for 100% certain if Amal was implying that that applies to all implantable LED’s and their relative brightness beneath the skin at any intensity, or if he was just applying that fact to those 4 LED’s and that is not a rule that holds true with all implantable LED’s in general.
I’ve been busy with work stuff so not had chance to do a great deal on this but I’m back on it! @amal I’ll contact you on the weekend. I did plan on doing a full-on video but anything I’ve got camera wise just doesn’t deal with bright LEDs very well, no matter what settings I play with. Also I can’t be spending too much time on film production. Just a couple of things to optimise but it is basically there. Flags seems to be the theme! As I’ve a fair selection of LEDs I did try a rainbow version but the let down is the purple. Well you’re in UV territory really and they ain’t particularly bright given the constraints of the available harvested energy.
No not really, just a blagger ;-). I’m an RF/electronics guy, but I do like the idea of the added convenience (utilising RFID/electronics) in my life, and if I can add a bit of LED bling then so be it. There’s other RFID related things I’m working on where my ultimate goal is to add functionality that can really help people.
god did you check their website? $99 for a virtual event (their lower end ticket)
They also don’t seem to know where they want to hit, some speakers seem like intelligent people talking about Genome Editing and the other 80% are just nutrition bloggers talking about Biohacking diets
The thing that gets me about these people is their assumption that their target audience (me in this case) is stupid. It’s deeply insulting.
Case in point. They almost always make their user name the same as what they’re hawking. I’d quuote it to prove it, but Pilgrimaster already cleaned up the offending mess.
Do they really think no one notices? Or that it helps their shitty advert campaign?
Any chance of me purchasing one of these to send to Amal? I was thinking of having one of these implanted, and a tattoo put over it. If he is open to it of course.