Maybe next test, you can slice open a piece of chicken, Insert the module, and see how long it takes to cook dinner 
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Iād definitely buy one to play with.
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Me too.
If so, wonder where at? Dont see it on a talk when I was poking through the list, or biohacking village site.
The defcon talk was Miana (@NiamhAstra ) and the post on Facebook was chimpo mcdoodle from the discord
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First implant using the Qi charger. Iām meeting up with Miana tomorrow. Sheās going to add glow powder, then get it encapsulated and put in.
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Iām sure itās very premature to ask, but where/when/how can I get one? Also how will installs be handled for these?
What kind of glow powder is she going to use?
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Yeah definitely premature. Iāll get back to you. This was a collaboration between Miana and I for her personal use. It may literally not be safe, so after having it in for awhile sheāll determine if sheās even willing to offer it to others.
On my end, the black Qi receiver board will be made open source now that itās finalized, and in about 2 months I should be finished with a large population run of them on my pick and place and can begin selling them to anyone who wants to use them for their own implant projects. I know the grindfest people were very interested for some of the whacky ideas they had, so there will be more interesting stuff coming up in this space over the next few months
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Also premature, but what did you settle on for expected & functional power budgets? 500ma @5v implanted what youāre assuming for your work? Or did final resistors & losses from skin knock it down significantly?
She said this
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It depends on how good you can get the coupling, because the Qi chargers are always bigger than this receiver. Under good coupling conditions with a standard Qi charger I was able to pull 750mA, but thatās cutting it close. The hardware limit I imposed with resistors was 1A, and if I make a special small charger to couple specifically with this receiver then I may be able to achieve that down the line.
Iām also thinking the next goal is to add an NFC antenna around the outer perimeter that is connected to an NTAG 5 so that you can do power via Qi, and transparent I2C channel over NFC to broaden the number of use cases. This is version 1 though and that will be version 2 early next year
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hello,
I follow this project from the beginning with attention.
And i was wondering, the implant u show in last video does not store data right? for now itās just to test supply right? or did i misunderstand something?
Yup. Iām not a programmer and the other people involved havenāt been committed enough to get the fileserver set up reliably. We have the power source now though.
ok
TBH iām more into programming/network myself. So if the problem is about this maybe i can take a look.
I donāt garantee anything since iām still in training still but i can try
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Okay, so I did some research and I have a few questions.
Do you currently use an MCU on your existing board? Is it useful for your current setup? If yes, what is the model, so I can learn about its characteristics?
You mentioned that you were planning to implement Wi-Fi. Have you conducted any tests with Bluetooth Low Energy (BLE) to explore this possibility? Wi-Fi can be quite power-intensive, but I believe BLE might not penetrate the skin well.
Have you already considered the potential Wi-Fi antenna and how to integrate it?
I apologize for all my questions. Haha!
Hey, sorry Iām on a trip currently so I didnāt have any time to address this.
My Qi receiver does not currently have a microcontroller. Xander52 on the discord is exploring the Trolink MT7628DAN microprocessor that is used in WiFi routers. Miana from the discord is exploring an ESP32-S3 solution, but weāre concerned the data transfer rate for something like that might not be substantively faster than NFC (200-400kbps).
For the WiFi antenna we could use a premade module, but for the final revision I have the ability to create an antenna myself. I have a bunch of experience doing RF engineering. WiFi and BLE are both 2.45GHz, so they will be significantly attenuated by the tissue, but weāve seen examples of WiFi devices working from inside the body. Theyāll just have reduced range.
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Hereās the complete package for the Qi receiver. Feel free to use or edit it however you like. Order a 4 layer rigid PCB with 0.6mm thickness for best results.
QiReceiver[20231023].zip (365.5 KB)
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