*BLF LT1 Lantern Project) (updated Nov,17,2020)

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sunsethiker
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The LT1 4.3 version has 3×4 pin layout. I do not know if all the pins are used or not but I really do not want to ruin the cable for the Emisar lights trying to make it work on the LT1. I do plan on using the usb part, just need a different cable/pin holder.

SammysHP
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You only need the six pads in the 2×3 array as labeled. Use some jumper wires to match the wiring between the programmer and the cable.

Streamtronics
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sunsethiker wrote:
I do plan on using the usb part, just nedd a different cable/pin holder.

You'd be able to use the pogo pins as well, there's a pin header on that side as well after all. Just need to manufacture a cable that swaps signals according to the needed pad arrangement. 

SammysHP wrote:
You only need the six pads in the 2x3 array as labeled. Use some jumper wires to match the wiring between the programmer and the cable.

I'd expect six just loosely held wires to be a quite dodgy connection.

sunsethiker
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This thread is so large it is hard to scroll though and searching is tentative but I have found reference that the Osh park board will work even though it is a 2 × 4 pin. I am trying find out now what the pins are being used for on the LT1.

I am going to have 5 or more of the lights between friends and family and want to make it as easy as possible to reprogram. I do not mind spending the time to make a LT1 specific pogo holder cable.

Should this be a separate thread?

edit: found this https://budgetlightforum.com/node/36216

SammysHP
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Streamtronics wrote:

I’d expect six just loosely held wires to be a quite dodgy connection.


I meant using both sides – the programmer and the pogo pin PCB – and connect them with jumper wires. Or is Hank’s pogo pin adapter just 2+4 instead of “full” 4+4? In that case it can still be used – just omit ground or V+ and connect it directly to the flashlight.
Streamtronics
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SammysHP wrote:
Streamtronics wrote:

I'd expect six just loosely held wires to be a quite dodgy connection.

I meant using both sides – the programmer and the pogo pin PCB – and connect them with jumper wires. Or is Hank's pogo pin adapter just 2+4 instead of "full" 4+4? In that case it can still be used – just omit ground or V+ and connect it directly to the flashlight.

Oh lol, sorry for the misunderstanding. Yeah that'd certainly work 

sunsethiker
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Everything I am finding about programming is the chip it self.

https://budgetlightforum.com/node/36216

Is there a schematic of the programming pads? + and – are labeled but the rest are not.

SammysHP
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Everything should be labeled. Here is a photo of the latest revision: https://i.redd.it/bzi7l3tlaui51.jpg

It is

RST V+ GND
SCK MISO MOSI

Funtastic
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Does anyone have a rough estimate as to how long moonlight will last with 4× 3300mAh cells?

Piercing The Darkness YouTube channel – https://www.youtube.com/c/PiercingTheDarkness

SammysHP
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5x AMC7135: 5 * 0.35 A = 1.75 A
1/256 duty cycle: 1.75 A / 256 = 6.8 mA
LED + MCU: 6.8 mA + 2 mA = 8.8 mA
Battery capacity: 4 * 3300 mAh = 13.2 Ah
Estimated runtime: 13.2 Ah / 8.8 mA = 1500 h = 62.5 d

Probably much less due to other losses.

Funtastic
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SammysHP wrote:
5x AMC7135: 5 * 0.35 A = 1.75 A
1/256 duty cycle: 1.75 A / 256 = 6.8 mA
LED + MCU: 6.8 mA + 2 mA = 8.8 mA
Battery capacity: 4 * 3300 mAh = 13.2 Ah
Estimated runtime: 13.2 Ah / 8.8 mA = 1500 h = 62.5 d

Probably much less due to other losses.

I appreciate it, many thanks

Piercing The Darkness YouTube channel – https://www.youtube.com/c/PiercingTheDarkness

Coscar
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Funtastic wrote:
Does anyone have a rough estimate as to how long moonlight will last with 4× 3300mAh cells?

I know this wasn’t your question but thought it may also be useful……. Beer

Coscar wrote:
I enjoy candle mode. I did a runtime test in low candle mode starting with 30Qs@ 4.2v. After 21days – 24/7(total of 504 hours) the onboard voltage reported 3.4v.

Im not a Pessimist …. just an Optimist with a lot of experience


A little John Prine

Geronimo
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Havent flashed my original version yet but realized I lost the usb rubber cover for the charge port , any ideas? I didn’t see parts listed anywher e.

Emisar d1s 3a. ZL sc700d,sc64w hi,H600c,Streamlight tlr1-hl, Astrolux mfo1s 4k/purple. Olight I3t Eos black. Ylp 2m cri.ZL sc64le, k1 xhp35 hi in 4k.

Skylight
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Geronimo wrote:
Havent flashed my original version yet but realized I lost the usb rubber cover for the charge port , any ideas? I didn’t see parts listed anywher e.

Recently I got my BLF LT1 and it has a spare USB cover together with the spare o-rings. You should ask Sofirn if they can send you one. They should have it available as a spare part.

SR-G
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Do you know which screws (with which dimensions) to buy and that would fit the BLT L1 screw holes ?

I ordered these ones (flavor “LS047” / screw 4.5mm + additional height 3mm), and sadly they don’t fit well (and not in the same way between hole on the side versus at the bottom = it goes deeper on the side) (and i haven’t been able to find models without the “gap” in the middle).

https://fr.aliexpress.com/item/4000767201624.html?spm=a2g0s.9042311.0.0....


derfyled
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Never tried but I’m 99.99% sure these would fit.

https://www.amazon.ca/Lala-Smill-Mounting-Stainless-Release/dp/B07JZDBDP...

You simply need standard photography tripod screws. Nominal size is 1/4-20

PS: ces vis sont disponibles au sur Amazon Canada, j’imagine qu’elles le sont également sur Amazon France ?

Sunnysunsun
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Streamtronics wrote:

Is there anyone willing to try my custom 16 bit build of Anduril 2 for the LT1? I’d love to get some feedback on it.


It provides nice and smooth tint ramping and much less tint flickering when dimming at low modes, it’s just that the brightness curve is somehow bumpy and I haven’t figured out why yet (I actually suspect hardware non-linearities). I haven’t seen anyone else do this yet (faking 16 bit on an 8 bit capable MCU).


I can provide a zip with the source code and hex file to anyone interested (I still don’t understand how to add my code to TK’s firmware repository without considerable effort). 

Sure, I’d like to give it a try! How bad is the bumpiness?

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Barry kindly sent me some real pictures of the new LT1 colors. I think their anodizing team did a pretty good job, didn't they? Maybe we get to see these new colors packed with new features like full USB-C compatibility (PD charging) as well as reverse-charging, i.e. to use LT1 as a powerbank to recharge external devices.

lionheart_2281
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only 2 new colours?

Rexlion
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I really like that dark green. The other one just looks black on my monitor; how would you describe the color, Lux?

== We save the planet from darkness ==

DBSAR
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Lux-Perpetua wrote:

Barry kindly sent me some real pictures of the new LT1 colors. I think their anodizing team did a pretty good job, didn’t they? Maybe we get to see these new colors packed with new features like full USB-C compatibility (PD charging) as well as reverse-charging, i.e. to use LT1 as a powerbank to recharge external devices.


Looking good! – My apologies for my limited correspondence over the last number of months, been crazy busy with the big move, settling in a new house, all that. I hope to chat more with Barry soon on the colors versions, accessories, and the Mini LT1 once i get back on my feet.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

AguassissiM
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So where do I sign up for the green one and how soon can I get it? Thumbs Up

***Rofis MR70*TurnRaise*Catapult V6*BLF Q8*BLF Mini*BLF Micro*Haikelite MT09R* Convoy C8*BLF D80v2 SST40*MatemincoX6S*AstroluxFT03-xhp50.2*AstroluxFT03-sst40*BLF-LT1*AstroluxFT03S-SBT90.2***

Sunnysunsun
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lionheart_2281 wrote:
only 2 new colours?

I assume they’re just using what they’re familiar with. These look like the EC01/3 colours

YogibearAl
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On Sofirn’s own site they are selling the 2 colors above as well as the orange, but they did not provide a photo of what the orange one looks like.

https://sofirnlight.com/ – says it supports C to C charging, but when you click into the item link is still says A to C charging???

I didn’t know these could be operated connected to a wall charger without batteries. Will need to try with my updated version. I guess if they support C to C charging this would be version 3?

Sunnysunsun
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I’m assuming the Attiny85 doesn’t have enough pins/legs/whatever they’re called to support a third channel? I’ve been using my LT1 as a bedtime lamp in sunset mode and would prefer the lowest pwm mode to go a bit dimmer. I might just remove one of the 0 ohm resistors on my driver board but I was wondering if there’s the possibility of DIY-ing a single 7135 third channel.

Would something like disconnecting the switch and connecting a 7135 to that channel work or is that leg not a pwm possible leg? I wouldn’t mind having my switch just constantly dim and using the provided potentialometer to adjust the switch brightness.

spaghettikku
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thanks

amarcin
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@SR-G If you like ali, here’s the ones that match: https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_2021012412...

Another interesting option that can be used is the magnet with the Dslr 1/4 screw


https://www.aliexpress.com/item/4000131466300.html?spm=a2g0o.productlist...

waxing twilight
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Has anyone heard anything about the production of more orange LT-1s? Seems they’ve been out of stock a while and I haven’t gotten anything in reply from Sofirn except that they are out of stock.
Has anyone actually received an orange LT-1?

Sparks65
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I ordered one while the sight said they were available, only to be told that they weren’t available. I waited 12 days and nothing shipped.
I finally asked sofirn to either refund my money or switch my order to a green lantern, which they sent yesterday. When I contacted Barry
he told me they were waiting on anodizing. Sounds like they were never really in stock.

Rat
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waxing twilight wrote:
Has anyone heard anything about the production of more orange LT-1s? Seems they’ve been out of stock a while and I haven’t gotten anything in reply from Sofirn except that they are out of stock. Has anyone actually received an orange LT-1?

I am waiting on an orange also. Sent them a message they said 20-days two days ago so 18-days now who’s counting

later

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