*BLF LT1 Lantern Project* (codes going out for more LT1s, second batch shipping!)

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amishbill
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Behyot wrote:
Sloth wrote:
ToyKeeper wrote:

The short version is:
  1. Get a usbasp device, a ribbon cable, and either a SOIC8 clip or a pogo pin adapter.
  2. Install some free software.
  3. Physically attach the adapter, and run a command on a computer or phone.

Can Hank’s flashing kit for the D4v2 be used or will a different pogo pin adapter style is required?

Has this been answered yet? It looks like the programming pad layout is similar but I’m not sure how that works.


They are not the same.

DIY LT1 battery wrap image. "PDF on Google Drive":https://drive.google.com/open?id=1IHIEOi1NXu868IYNCzIM7D2Ulpxchmww

Fresh Sanyo NCR18650GAs already wrapped "for sale HERE":http://budgetlightforum.com/node/69120 if you like.

flashycali
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Contacted Sofirn via PM, got a code within hours and order placed!

Thanks Sofirn for being so responsive and helpful with my questions. Smile

mlodyulek
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So finally I got some lull so I was able to make the mod to the LT1 so that it charges from USB-C to USB-C.

It is doable but it isn’t easy

Cable works in both orientations. I have tested with only one AC adapter but it the one that obeys the USB spec so it should work with any that does so too.

I have charged from 3.9V to completion and there doesn’t appear to be any issues, couple of minutes before the green light the cells were about 4.172V

I have taken one picture but frankly this isn’t the best of my work. And the pictures don’t show much

If anyone is interested I can put more detailed description of what I did and what to do.

BillyBobJoe
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mlodyulek wrote:
So finally I got some lull so I was able to make the mod to the LT1 so that it charges from USB-C to USB-C.

It is doable but it isn’t easy

Cable works in both orientations. I have tested with only one AC adapter but it the one that obeys the USB spec so it should work with any that does so too.

I have charged from 3.9V to completion and there doesn’t appear to be any issues, couple of minutes before the green light the cells were about 4.172V

I have taken one picture but frankly this isn’t the best of my work. And the pictures don’t show much

If anyone is interested I can put more detailed description of what I did and what to do.

Very interested in seeing more. Mine hasn’t arrived yet, but I plan to do it when it does.

osb40000
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leftdisconnected wrote:
osb40000 wrote:
Been here since the beginning with #93, 110, 111, 112, 141 among others… I still haven’t been able to order a unit, hopefully Sofrin gets the order process dialed and everyone on the list receives theirs. Love all the work that has been put into this product and can’t wait to pickup several.

Contrary to some accusations, I am not dismissive of folks like you who have seemingly been “skipped”. If there’s nothing wrong with your account’s PM settings, then you should have already had an LT1 in your country or in your hands Sad . I would contact Sofirn, perhaps by sending a PM to Barry or something.

I want to thank Barry for posting useful updates and information about the Group Buy, but someone should also be responding to individuals like yourself who have neither a PM nor any clue why not. I’m not expecting perfection, but something is amiss when #900 lanterns are being shipped while a few #9 or #93 buyers haven’t heard anything at all.

Communication is the key and if Sofirn believes that the member was sent a PM, then they could post a response in this thread to let the member know that there’s a problem and that it may not be Sofirn’s fault.

I have no doubt that you will get eventually your lanterns at the Group Buy price, but you and the others in your situation deserve some attention from Sofirn so that, at the very least, you would know what happened and what they plan to do about it.

People who demand to receive their LT1’s before Christmas when no such promise was ever made are not at all the same as patient listees at low digits who simply want to know why they have received no communications at all while folks close to the #1000 mark are placing orders. This situation would have been unlikely if we were using the planned, BLF-operated PM system.

I received an initial single use code for a lantern only, but due to the problems with ordering, by the time that it was available again via Amazon, the code had expired. I responded to Sofirn and let them know and was told:

“Thank you for enjoy the lantern and your patience. The next batch will be avaliable around 15-20 days later. And we will pre-order it around 5-7 days. And then we will send another code to you to order more. Thanks again.”

I’m not in a rush at all, my concern is that they’re under the assumption that I already ordered one in the initial batch, which I wasn’t able to despite having ~ 8 reserved in the first 500, and I didn’t receive a code for Lantern + batteries. I’m not mad or even annoyed, and I fully understand the logistical nightmare a project like this entails and am perfectly happy to wait as long as needed.

My only concerns are that people like me receive all the lanterns they signed up for, and it appears that some, like myself weren’t able to order but Sofirn is under the impression they have and still others never received codes in the first place.

Again, a big thank you to all involved in this project, I’m extremely excited.

osb40000
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Barry0892 wrote:
osb40000 wrote:
Been here since the beginning with #93, 110, 111, 112, 141 among others… I still haven’t been able to order a unit, hopefully Sofrin gets the order process dialed and everyone on the list receives theirs. Love all the work that has been put into this product and can’t wait to pickup several.

I have checked sofirn account messages. A single-used code was sent to you in the beginning of Nov. But you asked for 10 units.

I am sorry to tell you, for now, you can only buy 1 unit. You will need to wait to buy the rest 9 units.

To all BLFers, I apologize if sofirn account didn’t do a great job communicating. Because new staff named Lan Lee, who is a young girl graduated months ago, is using this account. I appreciate your understanding.

Barry, thank you for the response. I tried ordering, but the amazon link was no good due to all the problems that were occurring with the first batch. I tried ordering, but wasn’t able, and by the time the amazon link was live (I admittedly didn’t check daily), the code had expired. I’m fine with ordering one at a time, but I’d like to get at least a single unit in this next batch. I appreciate all the work that everyone has put into this and am very patient and in no rush.

mlodyulek
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As a preface, this requires decent equipment, decent skill, attention to detail and ultimately might result in your lantern being damaged beyond repair from either inappropriate use of the equipment or incorrect execution.
Even though I performed the mod successfully I give you no warranties. If you blow a hole in your PCB or one of the ICs you did it yourself.

So to mod your LT1 to charge from C to C cable you will need a following:

  • Mod wire. Thinner the better. Best would a magnet or enameled wire of 40 awg or above. Like this I have used a scrapped parts of a litz wire. If you are looking for some on the cheap then if you take apart any relay, small electric motors the chances are that you will find an enameled magnet wire that will work.
  • 0402 or 0603 resistors like this we need 5.1kOhms +/-20% so technically any value between 4.1k and 6.1k would work. Not sure where you could source those on the easy. If buying from anywhere buy at least 10. They are super small so if you even think about sneezing around them they will disappear. They should be cheap enough, probably pay more for shipping as compared to the hardware.
  • A soldering iron. Preferably something direct heating and has decent tip on it. Standard chisel won’t work. I worked with one like this this
  • Tweezers that are angled something similar like this . Any other tweezer will do as long as you can grab a 0402 comfortably but the curved ones will make your life easier. Preferably another pair of tweezers
  • other soldering equipment solder, flux, wick, wire cutters, IPA, possibly brush etc
  • RTV preferably clear but a red one will do.

Once everything is gathered you can start.
You need to lay the driver flat and secure it. The wires should be long enough to allow you to pull it out, and secure so that it doesn’t move (you can use double sided tape to whatever it will be laying on). Kinda like this (borrowed from djozz from here) Any movement during soldering will be your enemy.
Note here. When I did mine I didn’t remove any of the wires going to the main leds but you can. If you do so then you will have much better access to what you want to do it. However I didn’t feel like doing so since there is a lot of wires and most of them are black.
Here is the data sheet for the USB C connector used in the LT1. What are you are looking to do is connect CC, pins A5 and B5 to A1, A12, B1, B12 through the resistor. Here is pointed out what is what on the actual picture USB-C .
Find a decent spot for the resistor, I initially put them more or less like this .
With the resistor position set, cut you enamel wire so that you don’t have deal with the whole bunch of it.
Strip the ends of the wire using your soldering iron. What I do with enamel wire I put bunch of solder on the tip of the soldering iron and then stick how much I want to strip and leave it there for couple of seconds.
Take the resistor and tin the ends of them. Similarly put a bit of solder on the tip and then touch to the end of the resistor so a bit sticks.

Now comes the hard part. Apply as much flux as you are comfortable with to the connector pin. Put as much solder as you can on the pins that you will be using. If you get some pins bridged it’s not the end of the world. Use the wick to clean it up.

Once you have the pins tinned, it is pretty much solder everything in place. What I aimed to do is the following. What you can do with the magnet wire is that once it is solder in place you can “snap it off” by keeping it taught (but not pulling strongly otherwise you might lift a pad) and move it back and forth until it comes off. Since the resistors are not attached to the board you will have to support them using another pair of tweezers or something pointy.

After about 45min of swearing and wishing that your hands were smaller and listen to your parents and didn’t sit so close to the TV you will end up with something like this . Even though it is ugly it is type of situation that if it is stupid then it works.
Clean with IPA and brush gently.
Visually inspect to make sure that there are no visual shorts etc.
If everything looks good then proceed to testing.
What I did is, I plugged in the usb-c charger to the wall, gave it couple of Mississippi, unplugged from the wall, then plugged in into the LT1 without batteries. Since the USB-C provide significant power they generally have enough energy stored in the input and output caps so that they can hold up the its internal and LT1 circuitry for few seconds. By doing this you limit the incident energy that is available so if there is anything wrong, there might be a puff of smoke but you shouldn’t destroy the connector or the board.
If everything is alright then you will get a flash, that the LT1 has power, and the green LED that the batteries are fully charged.
Once you have everything tested and confirmed that it works, apply the RTV to the area to ensure that the mod doesn’t get damaged physically. What I did is gave a squirt of the RTV and gently pressed into the board, tried not to smear it around.

Hope that helps you guys. If you have any questions then let me know, will do my best to answer them.

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$12 bucks on Amazon, no soldering required, use cable that comes with lantern. Problem solved

mlodyulek
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If it works for you that is great.

All of the things that I travel with use usb-c.

So now if I want to take the the LT1 then that and a cable is another thing that I can’t forget.

Also I would much rather spend $12 on beer than another charger.

RobertB
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mlodyulek wrote:
If it works for you that is great.

All of the things that I travel with use usb-c.

So now if I want to take the the LT1 then that and a cable is another thing that I can’t forget.

Also I would much rather spend $12 on beer than another charger.

Enjoy the beer!

beastlykings
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mlodyulek thank you very much!

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RobertB wrote:
$12 bucks on Amazon, no soldering required, use cable that comes with lantern. Problem solved

Why are you dismissing his work? He was generous enough to share what he did to get usb-c to usb-c charging working.

mlodyulek – very insightful, thanks.

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Great job mlodyulek!

9mm/40cal/45cal bullets and large/small pistol primers available for sale in San Francisco Bay area

cu42
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mlodyulek wrote:
As a preface, this requires decent equipment, decent skill, attention to detail ….

….. Hope that helps you guys. If you have any questions then let me know, will do my best to answer them.

Thanks for the detailed guide with pics! There are plenty of us who like to fix things ourselves even if just for the challenge.

Someone needs to buy the 10,000 resistors for $12 and throw two at a time in envelopes and mail for a 50 cent stamp to DYIers in the USA for a few bucks per pack!

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BFLAlias wrote:
RobertB wrote:
$12 bucks on Amazon, no soldering required, use cable that comes with lantern. Problem solved

Why are you dismissing his work? He was generous enough to share what he did to get usb-c to usb-c charging working.

mlodyulek – very insightful, thanks.

thats a large % of posts nowadays… taking the piss out of someone.
I’m glad he posted it, I got a buddy who does that stuff in his sleep… now to find resistors and mod – because BLF is about Budgets and modding !

anyone in NE ILLinois into get togethers?

amishbill
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cu42 wrote:

Someone needs to buy the 10,000 resistors for $12 and throw two at a time in envelopes and mail for a 50 cent stamp to DYIers in the USA for a few bucks per pack!


Don’t give me ideas. I just got a 100 pack of standard resistors, and will have 100 each of two different size (bigger for easier manipulation) SMD resistors.

DIY LT1 battery wrap image. "PDF on Google Drive":https://drive.google.com/open?id=1IHIEOi1NXu868IYNCzIM7D2Ulpxchmww

Fresh Sanyo NCR18650GAs already wrapped "for sale HERE":http://budgetlightforum.com/node/69120 if you like.

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amishbill wrote:
cu42 wrote:

Someone needs to buy the 10,000 resistors for $12 and throw two at a time in envelopes and mail for a 50 cent stamp to DYIers in the USA for a few bucks per pack!


Don’t give me ideas. I just got a 100 pack of standard resistors, and will have 100 each of two different size (bigger for easier manipulation) SMD resistors.
Sounds like just enough for the 100 lanterns you’re buying Smile

9mm/40cal/45cal bullets and large/small pistol primers available for sale in San Francisco Bay area

leftdisconnected
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Sofirn wrote:
I’m new staff of sofirn, Lan Lee who just graduated from college months ago. People who are in 1-1076 of the list have got code, if not, please contact me to check out. Also I am looking back to the list to see anyone was neglected. I’m trying to be better. Thank you for understanding.

THANK YOU, Barry and Lan Lee! This sort of communication is precisely what potential buyers would want to hear. So long as everyone knows what’s going on and that they have someone to ask when they have questions, then Sofirn is doing a great job.

RobAllen

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Will the resistor mod prevent charging using a 12v input?

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gravelmonkey wrote:
Will the resistor mod prevent charging using a 12v input?

No.
In case you wonder why, it’s because the 5.1k resistors connect the CC pins to GND while the charging input comes from the VBUS pins.

lotrbfme
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Got a code and order placed!

wahoowad
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Sofirn sent my code via PM but they stated this

Quote:
If you need code of lantern with batteries, please reply directly.”

I replied to them numerous times as well as sent a new PM and they have not responded. Has anybody requested and received a replacement code for a lantern + battery order and been sent the requested code? I’m trying to figure out if I should just order the bare lantern before something else happens in this process or continue to wait for a new code, if they are even sending them.

It seems like paying the $62 for lantern + batteries is a good deal and I need the cells.

       
       
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It is a nice deal with batteries – and yes – be patient. This is not an automated process, so sometimes it takes longer that you’d think it should.

DIY LT1 battery wrap image. "PDF on Google Drive":https://drive.google.com/open?id=1IHIEOi1NXu868IYNCzIM7D2Ulpxchmww

Fresh Sanyo NCR18650GAs already wrapped "for sale HERE":http://budgetlightforum.com/node/69120 if you like.

K1NGP1NT
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Same thing for me, i replied to the PM from sofirn to get a code for the lantern + batteries and got no answer yet.

Guess i need to have a few more days of patience.

I just hope i´ll get a new code before the one for “LT1 only” expires and me being stuck without any of the lanterns Sad

cu42
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wahoowad wrote:
Sofirn sent my code via PM but they stated this
Quote:
If you need code of lantern with batteries, please reply directly.”

I replied to them numerous times as well as sent a new PM and they have not responded. Has anybody requested and received a replacement code for a lantern + battery order and been sent the requested code? I’m trying to figure out if I should just order the bare lantern before something else happens in this process or continue to wait for a new code, if they are even sending them.

It seems like paying the $62 for lantern + batteries is a good deal and I need the cells.

I got the same message. I replied back and asked for the code for with batteries and got it the next day. China is on opposite time from us. Minimum 24 hour turn around on replies.

Agreed. 62 seems like a great deal for LT1 and batteries. I am excited.

mlodyulek
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cu42 wrote:
mlodyulek wrote:
As a preface, this requires decent equipment, decent skill, attention to detail ….

….. Hope that helps you guys. If you have any questions then let me know, will do my best to answer them.

Thanks for the detailed guide with pics! There are plenty of us who like to fix things ourselves even if just for the challenge.

Someone needs to buy the 10,000 resistors for $12 and throw two at a time in envelopes and mail for a 50 cent stamp to DYIers in the USA for a few bucks per pack!

If anyone is going to be doing that service you need to throw at least 10. I think that worst case scenario they are like 10c each so its a buck
Those suckers have talent to disappear. Can’t tell you how times I peeled one from the reel grabbed it with the tweezer and poing, off into the rhubarb, never to be seen again. Not to say that they can break apart or the solder pads get rip off if you heat them up.

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A question, is batch #2 available for those who listed more than 1 lantern in the group buy list?

Let’s say, I listed 4 lanterns in the group-buy list.
Already got 1 lantern from batch 1.
Can I order another 1 lantern from batch 2 (limit 1 again?),
or perhaps order the remaining 3 lanterns from batch 2?

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d_t_a wrote:
A question, is batch #2 available for those who listed more than 1 lantern in the group buy list?

Let’s say, I listed 4 lanterns in the group-buy list.
Already got 1 lantern from batch 1.
Can I order another 1 lantern from batch 2 (limit 1 again?),
or perhaps order the remaining 3 lanterns from batch 2?

I would think Sofirn should go all the way through the list, allocating a single LT1 until everyone has been offered a buy-in. Then go through the list again and fill all the others. Just my idea… carries no weight with Sofirn. And FWIW I have expressed interest for a total of three; already have one and waiting to see how this shakes out. I would think there will be a few more production runs before the list is completed.

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MtnDon wrote:
d_t_a wrote:
A question, is batch #2 available for those who listed more than 1 lantern in the group buy list?

Let’s say, I listed 4 lanterns in the group-buy list.
Already got 1 lantern from batch 1.
Can I order another 1 lantern from batch 2 (limit 1 again?),
or perhaps order the remaining 3 lanterns from batch 2?

I would think Sofirn should go all the way through the list, allocating a single LT1 until everyone has been offered a buy-in. Then go through the list again and fill all the others. Just my idea… carries no weight with Sofirn. And FWIW I have expressed interest for a total of three; already have one and waiting to see how this shakes out. I would think there will be a few more production runs before the list is completed.

I will talk to Barry & Sofirn to inquire on how they are planning on handing that to get an answer to those questions.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

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Sofirn will make sure every single person get code for one unit. Then go back to rescan the list and send new codes for those who want more than 1 lantern.

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Facebook: https://www.facebook.com/barry.lee.984991

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