Postbag #22: Qi Wireless Charging Stuff, ThruNite TN12 Torch
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- čas přidán 11. 06. 2024
- What goodies are in today's post?
Qi Wireless Charger PCBA Circuit Board With Coil Charging Pad For Nokia Samsung www.ebay.co.uk/itm/Qi-Wireless...
New Qi 5V Wireless Charger Accepter Charging Receiver For Samsung Note 2 BF00 www.ebay.co.uk/itm/-/400746453682
ThruNite® TN12 2014 Edition 1050 Lumen S... Reply w/ #AmazonBasket to add this www.amazon.co.uk/dp/B00I2H2BQE... via @AmazonUK
2 x ThruNite 18650 3400Mah Li-Ion Rechar... Reply w/ #AmazonBasket to add this www.amazon.co.uk/dp/B00H7WXXP8... via @AmazonUK
More links for ThruNite TN12:
TN12:
Official Store: www.thrunite.com/thrunite-tn12...
Amazon USA: www.amazon.com/dp/B00IEWOCP0/
Amazon Canada: www.amazon.ca/dp/B00I2H2BQE
Amazon Germany: www.amazon.de/dp/B00I2H2BQE
Amazon France: www.amazon.fr/dp/B00I2H2BQE/
Amazon Italy： www.amazon.it/dp/B00IFWUT1A - Věda a technologie
the newer fast wireless chargers actualy nigoteate back and forth to ramp up the voltage on the pad until the phone is chargeing at a fast rate. idk if there are modual hacker friendly versions yet. i also wonder if you can use a small steel coin in the center to act like a transformer core and improve efficany/ range and power delivery
the black thing is ferrite , it's used to focus the magnetic field, also used on chokes and small transformers.
0:56 Looks like the coil uses Litz wire which is a type of cable used in electronics to carry alternating current. To reduce the skin effect and proximity effect losses in conductors used at frequencies up to about 1 MHz.
en.wikipedia.org/wiki/Litz_wire
That "plastic" is a ferrite pad
Aren't 90 minutes and 1.5 hours the same amount of time for the torch?
Hmmm, 1 hour =60min, 0.5hour=30min, 60min+30min=90min. Yes it seems 90min and 1.5hours are the same duration.
I have a qi (pronounced "Chee") charger for my nexus 7 2013, and i think it has the same controller chips as yours
Hi Julian, the disc at the back of the coil is actually made of ferro-magnetic material, probably in order to increase the overall induction value of the charging loop. I bought a very similar board last month to adapt on my windscreen mount for my Galaxy S5. These chargers are indeed highly finicky about positioning. Also I've noticed that some parts on the PCB do tend to heat up quite a lot, to the point of rendering them untouchable. Apart from that these are nice devices, according that you are fine with the slower charging times they provide, at least on a "large" battery such as mine (2800 mAh). Thanks for your nice channel. I am very impatiently waiting for the magical debouncing recipe for the rotary encoder...
DJSolitone I think I was being distracted by the green LED which I now realise goes out after a couple of seconds.
I'm getting back into the rotary encoder project - will shoot the next part soon.
Just take the charger receiver apart, the coil will fit your wearable and have the power electonics behind the coil. And could it not be that the voltage is inverted when the coil is the wrong way around?
Hi Julian. I'm very excited to see an LED flashlight in your postbag series. Anxiously waiting for that review. I noticed your older flashlight since the first time I started watching your videos months ago. I'm very curious, what battery, LED, reflector and lens does it have? Can you upload a picture of it and show us? Also what's the amp draw of the new flashlight measured at the tail cap?
runner180fxr The torch with my name printed on it is the LED Lenser M5 - single AA cell - NiMH or Alkaline - not sure about the LED, reflector or lens. I'll see if I can measure the cells current on the TN12 when I do my review.
Julian Ilett
Thanks for the info.
Julian Ilett How did you get your name printed on it? Is it a gift?
That torch looks like a keeper.
tjousk Oh yes.
Should I buy a TN12? I have an LED Lenser P7, which is great with a fresh set of AAA batteries but it's not long before the brightness starts to fade as the batteries run down. I'd really like a more constant light output.
ForViewingOnly Not keen on AAA torches, particularly those that take 3 cells.
hi there, i have some curious question regarding the pad or "receiver". as i seen someone selling with 500mA and 800mA. does the output stated there affect the charging speed on the phone?
Yes 800 will be faster
Shame they didn't engrave it with your name Julian. Besides that flaw. It's a joy to follow.
my torch which ran on 3 AAA batteries from the quid shop works with a 18650...
I'm not saying its a competitor lol
Might be interesting to measure the efficiency of the wireless setup. Given input and output are regulated to 5v, it is probably enough to measure current in and out simultaneously.
ickipoo Quick test shows 300mA drawn by the transmitter to put 130mA into the LiPo. About 50% efficient?
Ta. That sounds about right. And people seriously suggest using this technology for charging cars!
I also picked up on this strange 90 mins vs 1.5 hours issue. Do we know what the correct stats are?
***** I've asked the manufacturer for the correct run times.
I exadently broke one of my qi chargers when i tried to mount it to bottom side of nightstand... I think that black thing is some sort of ferrite core, not just plastic.
Uroš Golob Yes, it's too heavy to be plastic. So it's quite brittle then? A ferrite disc does make sense.
Julian Ilett Yes it is brittle, it did bend a tinny bit but then burst into pieces... and I could not get it to work without. Qi chargers are strangely sensitive where you put it, no wonders original nexus qi charger use 4 small magnets to lock it into place.
The Nexus 4 is annoyingly sensitive on Qi charger position. I had to center it perfectly and remove the case for it to work. With the same charger, the Nexus 5 is working perfectly with the case on. Same for the Nexus 7 2013 (2012 doesn't have Qi).
Eric Darchis Does the Nexus5 focus any quicker than the Nexus4? That's my biggest problem.
Julian Ilett It is only a bit better. When it loses focus in video mode, it usually takes a moment before it decides to refocus.
Some chargers from China say that the phone case can not be more then 5mm for it to charge the phone. Some are not made very well and people have had issues with overheating on some such as the Luaga models. Probably why they lower the price from $44 down to $12 USD.
+Eric Darchis The palm pre, which had wireless charging a looooong time ago had a series of small magnets in the phone and base which located the phone in place, made for a nifty docking station too.
MiggyManMike Yeah they never bothered advertising power mat charging much. You could even buy cases for certain phones to charge them wirelessly. People today think only Apple would have made such a thing but sadly Apple doesn't even bother to put that in phones or else the phone would have to be made thicker again. Sniff Sniff, poor Apple.
Hi, can anyone give me the dimensions of the pcb of the qi charger?
have fun with the tn12. still my main flashlight and i really like it.
Gigawipf Yes, it's a quarter the size of my Fenix TK41 and has a higher quoted lumens output
How long can it run on maximum/turbo before switching to a lower mode?
runner180fxr The manual says don't leave it on max for long time (no more than 10 minutes), so I'm guessing it doesn't automatically timeout.
it does not switch down after some time but i am sure it is protected against overheating. but trust me: you won't have it longer than 10 minutes on. outside it is okay but without airflow it gets a bit hot.
Gigawipf I live in Finland! Make a lovely winter handwarmer for walking into the city at -20 celcius!
Some Chinese chargers have larger coils so you do not have to be so finicky with placement of phone, especially with tablets. Just read the reviews as some have had issues with overheating and the chargers not realizing the phone is already charged, turning on and off again charging the phone more.
Qi chargers are suitable for charging people named Stephen Fry and that's Quite Interesting.
Hehe... Not certain if you know this by now, but the wireless charger is actually pronounced 'Chi'... :-) Thank you for all of the informative videos!!! Hoping to start my own IoT network using my current Windows based server/HTPC and a bunch of esp8266 Wi-Fi nodes. Hopefully your guides will be of some level of help to me once they arrive.
Could you send me any old laptops, pcs or servers.
+MrWaheedulHaque Where did this come from? Who are you??? lol Most people don't really have spare computers, especially servers (Really man?) laying around... Not to mention that you just make a random response, completely unrelated to the original comment, maybe next time you might want to try a little foreplay first... ;-) That being said, I do happen to have spare laptops (non-functional), motherboards (not sure if they all work or not), processors (again, not sure), and various components for them laying around... Though my willingness to send them to you is predicated on us having a bit of communication first...
Jacob Crosby haha
I see Aussies complain about how everything is cheaper in the US, well I am in the US and can't believe how cheap you get all of your gadgets in the UK!
Another interesting video! Those 18650's at 3400mah seem iffy at best, unlikely that's the real capacity!
There are a few companies that use Panasonic's 3400mah cell to make and sell protected cells.BUT, even the Panasonic's advertised capacity is not close to the real. 3326mah at 0.2A , 3197mah at 1A.
runner180fxr Yes, these cells have Panasonic NCR18650B inside according to ThruNite www.thrunite.com/thrunite-t3400-2-pieces-of-thrunite-3400mah-18650-battery/
Julian i believe you should check out a tech blog called the tek syndicate, its made for you my friend, thanks for the thanks in advance!
I have found that not all Qi chargers are created equal. Some time ago I bought one for $24.00 AUD and it works brilliantly every time. Recently I decided to chance a couple at $7.00 AUD each. They are junk, even out of the case it it difficult to get them to charge the phone.
Hey Julian, love the videos. I also have one of these QI chargers, I brought it as a consumer device in a case, not as a naked circuit. One day it stopped working, and it had two melted points. When I opened it I noticed that surface components Q4 and Q9 overhead and exploded to the point of melting the case. Just a word of warning as these particular circuits are pretty cheap
Maybe you can tear down the receiver to make it small. It looks like there is not much in it. :)
Özay Turay It does look quite hackable - I'll get another one and cut it up.
Julian Ilett My wife has a Nokia Lumia 920 so i bought the following chargers marked with an * sign, one with a case, the other is only PCB. I will buy a receiver to use with the PCB version Iater to experiment in my electronics projects. I don't think the PCB version is used, because there are so many listings from different sellers. These are the chepest ones i found. ;)
www.ebay.com/itm/261582972988
www.ebay.com/itm/121440903456 *
www.ebay.com/itm/111429627442 *
Thank you for taking my attention to QI Charging Technology.
How did you measure battery voltage and percentage there?
hi guys, these Qi chargers are compatible with phones what has already inbuilt wireless charging receiver? or anyway I have to use that sticker/receiver?
Galaxy S6 and newer can be wirelessly charged.
I could be wrong, but I thought "Qi" was pronounced "Chi" as in the Chinese word for energy. "Chi" in this sense is properly translated as "Qi"
Ben Dallimore Ha ha. See the other comments!
is it just me or is 90min and 1.5 hours the same
Not in China.
To check brightness, why don't you use the sensor on the screen side of a phone that measures in lux.
"Morning all!" (Hate posting my links on others' vids, but...) A little homage / vid response to Julian and my Arduino home automation project here: czcams.com/video/UWTSZPXc_ek/video.html
seeedstudio have some various chargers with receivers that is not packed in so the coil is smaller: www.seeedstudio.com/depot/Wireless-Charging-Module-p-1354.html
Base is ferrite.
Does the wireless charger need the ferrite base in order to work?
Inductive charging, based on my experience, could be considered directional...
Yeah Qi works only on one side.
Hene193 Hard to imagine why, if this works like a regular AC transformer. Evidently, it doesn't.
+Julian Ilett The black/grey plastic looking thing is a ferrite plate which it wont work through, the majority have a ferrite layer on one side :)
Chi, it's chi Julian. Not "cue-i" ;-)
icebear97 Yes, I saw it written as "chee" on the Wikipedia article. What a load of nonsense! I'm more interested in getting it to work than some silly pretentious pronunciation. I'm sticking with Q I :)
Julian Ilett more from wikipedia :
"In traditional Chinese culture, qi (more precisely qì, also chi, ch'i or ki) is an active principle forming part of any living thing. Qi is frequently translated as "natural energy", "life force", or "energy flow".
Saying cue-i sounds like some old BBC panel game long-since past its sell-by date, whereas saying chee to knowingly reference "energy flow" sounds fun and bang-on for this resonant inductive charging caper.
Rupert Rooksby Let's have a vote! All those in favour of "chee"...
Julian Ilett
I vote for Q I. It's the English alphabet, isn't it? If the manufacturer wanted to pronounce it differently, then they should consider a more proper way to write it.
I vote "Chi". The Chinese take the time to learn YOUR alphabet. Can't you reciprocate even a little? LOL (says the American )
Please get a tripod
ok
How did you just try to charge the same device you were filming with .... SMH!