JAKCOM R3 Smart Ring?
кто нибудь объяснит это по Русски?
https://www.youtube.com/watch?v=Vhw0c4r3JKY
кто нибудь объяснит это по Русски?
https://www.youtube.com/watch?v=Vhw0c4r3JKY
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Re: What is this ring?
a stupid idea. -
Re: What is this ring?
No Batteries?Comment
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Re: What is this ring?
it has batteries, it has to.
it's just a wireless display on your finger i suspect.Comment
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Re: What is this ring?
The backbone of every smart ring is Bluetooth technology. Bluetooth is a close-range wireless technology that allows any two Bluetooth-enabled devices to communicate with each other as far away as 328 feet (100 meters)
Bluetooth is considered a low-power technology, but it still needs juice, so smart rings must contain some type of battery that can be recharged using a docking station or a wireless recharging pad.
Reference:
TimeR Wearable NFC SmartRing
https://www.youtube.com/watch?v=9jT_w_ze45IComment
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Re: What is this ring?
For me, they use body's temperature generate electricity to power ring drive, thermoelectric device, similar to, I put my hand on thermocouple did generate few mV. Correct me if I am wrong!
Reference:
Could you charge a phone with your BRAIN? Human body generates enough electricity to fuel an iPhone in [COLOR="rgb(255, 140, 0)"]70 hours[/COLOR]
http://www.dailymail.co.uk/sciencete...-70-hours.html
Read more: http://www.dailymail.co.uk/sciencete...#ixzz4V57aM3Bm
Follow us: @MailOnline on Twitter | DailyMail on Facebook
Turning Body Heat Into Electricity
http://www.forbes.com/2010/06/07/nan...s-devices.html
It is usually a thin conductive material that exploits the temperature difference between its two sides to generate electricity, known as the Seebeck effect
Body Heat to Electricity: German Scientists Working on Viable Design
https://www.greenoptimistic.com/body.../#.WHDnGJNdWzA
temperature differences of just 0.5 degrees will be sufficient to generate electricity.
5 ways you can use the human body to generate electricity
http://www.utilitydive.com/news/5-wa...ricity/280709/
a body that is producing 100 to 120 watts of power.
microbial fuel cell – but this one runs on urine.,,,???
Electricity from body heat
http://phys.org/news/2007-08-electricity-body.htmlComment
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Re: What is this ring?
It's $15 on Amazon. Looks to be a some NFC device. Like those tags or stickers. Just it's a ring on your finger.Comment
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Re: What is this ring?
It could be also built on PiezoElectricity , and that's a big possibility regarding its cheap price . 15$ to an end user doesn't mean it will cost more than 5 ...Comment
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Re: What is this ring?
Is using a search engine cheating ? or are we playing a game where we make shit up ?
http://www.jakcom.com/ins/R3/JAKCOM_R3.htmlComment
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Re: What is this ring?
Coverage is 1.5 cm , that's interesting , and the other interesting thing is the volcanic magnet . Maybe their cover for piezo ...Comment
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Re: What is this ring?
No need battery charging..................charges wirelessly......
Reference:
1. Each group of chip is equipped with wireless receiving module, which can rapidly acquire the electromagnetic wave energy of the read-write equipment and efficiently turn it into electricity the chip needs, and then drive each chip to work properly.
2. It can make you forget the recharging and wiring harness, and use it at any time.
Smart rings: The good, the bad and the ugly in smart jewellery
http://www.wareable.com/smart-jewell...art-rings-1340
It also functions as a digital watch, charges wirelesslyComment
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Re: What is this ring?
one more road to cashless society .. i dont like it .Comment
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Re: What is this ring?
i try to invent a device to read smart rings.......from 10 feet..............
Apple has a clever idea for a smart ring — here are the diagrams
http://www.businessinsider.com/apple...t-ring-2015-10Comment
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Re: What is this ring?
It would be interesting if you can acquire a schematic of any of those , wherever their labels , as you go deep into . The Apple one says it needs a power source , so what's with apple ... Lost their jobs after jobs ?, lol ..i try to invent a device to read smart rings.......from 10 feet..............
Apple has a clever idea for a smart ring — here are the diagrams
http://www.businessinsider.com/apple...t-ring-2015-10
Anyway , i'm interested as it could be a new item in our Lebanese markets , at popular scale i mean .Comment
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Re: What is this ring?
I think the biggest distance achieved is about 15 cm for NFC.i try to invent a device to read smart rings.......from 10 feet..............
Apple has a clever idea for a smart ring — here are the diagrams
http://www.businessinsider.com/apple...t-ring-2015-10
Used for stealing contactless credit card details.Comment
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I am working on a backup phone to VHF paging solution. Basically I am dealing with the old Zetron pagers. Here is how it works: One calls a number, the Zetron picks up, operator punches in the DTMF access code, the Zetron keys the transmitter and you can talk. press # the Zetron unkeys the transmitter and hangs up / times out.
Now this setup works good on the old land lines, but not at all using a VOIP ATA.
You can call all you want and swear like a bastard at the Zetron, but it will not (even if I threaten it's life) pick up. 
Yep, I know about the high ring voltage... -
Hi all,
I'd like to add a ring tester to my toolbox to test flybacks but also low frequency transformers if possible.
I found a few products online, some based on the "diodegonewild" design, others are different designs. Some are available to build DIY, others are not.
Any suggestions on a DIY one I could put together? Ideally something which would also be able to test low frequency transformers, that might be handy.
So far I found these two:
http://bobparker.net.au/Basic%20Digital%20Ringer/ (the posher version... -
I found this switching power which has a blowed fuse checked diodes which were still good out of circuit checked main filtering capacitor with an ESR meter 220uf@450 volts 0.15 value which to me seem bad but maybe not but without these items not in the circuit because I have about 8 ohm on the output of the capacitors so I removed the switching power supply transformer and checked it with a ring tester and all but one winding showed good all others either showed two red lights or no lights on and one winding had all lights on which was the only one that was good
One other check that... -
Hi
All
Does anyone have a INSKAM 7 inch LCD digital microscope
I have a weird issue on the one I have where the USB port does not output enough power because when I connect a USB light or the ring light the light output is always really dim
The ring light when connected to the microscope USB port is at the lowest brightness and turning the brightness knob makes no difference
I have tried different cables and different USB power adapters
I have confirmed there is nothing wrong with the ring light and the other USB light by plugging them into another... -
I bought a Ring Doorbell 2 during Black Friday sale for my drive way but there is no wall outlet near unless I drill a hole in wall
So I did a google search and found they have a non vendor solar panel and a battery pack but the reviews all said the same thing about about the solar panel connector going to the battery pack that it is easily broken because it is made on plastic circuit board which is very thin the battery pack is a hole another story in it self
The batteries are a non brand battery that I have never heard of but the battery case was done very nice in...
Comment