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

11812 posts / 0 new
Last post
TheIntruder
Offline
Last seen: 3 days 26 min ago
Joined: 03/09/2018 - 02:11
Posts: 371

I like to have digital equivalents of documentation, and since I haven’t been able to find the manual for the A2 version, aside from a photograph of it, I’ve scanned the printed manual myself (despite whatever E&O it may have).

I’ve made it available here.

skatiol
Offline
Last seen: 1 month 2 weeks ago
Joined: 12/09/2021 - 08:56
Posts: 2

I ordered from Aliexpress and got a Sofirn A4 board, no powerbank function compared to the A2. edit: I was wrong

Indicator button on mine is blue in use and in standby and orange when charging.

BLF LT1 A4 board

 

supreme
Offline
Last seen: 1 day 1 hour ago
Joined: 11/20/2020 - 12:18
Posts: 198
skatiol wrote:

I ordered from Aliexpress and got a Sofirn A4 board, no powerbank function compared to the A2.


Indicator button on mine is blue in use and in standby and orange when charging.


 

This makes zero sense. Did Sofirn make another version of the mcpcb? Facepalm Can you take a clearer picture so we can read what is on the mcpcb?

hinbli
hinbli's picture
Offline
Last seen: 2 weeks 3 days ago
Joined: 05/02/2020 - 14:05
Posts: 43
Location: USA

It looks like there are few versions of Sofirn A4 boards now. The questions about the flashing key have come up already.

I am adding one more. Those 8 pads, 1 through 8, are probably corresponding to the pins, 1 though 8, on the chip. We need to confirm it. My question is more basic. Is it just me that the alignment of those pads looks like curved, not straight? If it is indeed curved, it looks like straight enough. So, the pcb for the key from Oshpark probably works, assuming the spacing is OK. The pins just need to be wired correctly.

By the way, I can see it is the “A4” board in the picture.

skatiol wrote:

I ordered from Aliexpress and got a Sofirn A4 board, no powerbank function compared to the A2.


Indicator button on mine is blue in use and in standby and orange when charging.


BLF LT1 A4 board


 

d_t_a
Offline
Last seen: 1 day 7 min ago
Joined: 08/04/2017 - 23:58
Posts: 2656
Location: Manila, Philippines
skatiol wrote:

I ordered from Aliexpress and got a Sofirn A4 board, no powerbank function compared to the A2.


Indicator button on mine is blue in use and in standby and orange when charging.


BLF LT1 A4 board


 

Now that is really confusing.

Were you able to verify that it really does not have powerbank out function?

Also, would you be able to check what is the Anduril version / date-model code?
(do 15 clicks from Off, then count the blinks)

skatiol
Offline
Last seen: 1 month 2 weeks ago
Joined: 12/09/2021 - 08:56
Posts: 2

It does have a powerbank function, didn't get it to work yesterday with the same cable for some reason. The version is 202108290621. Here's a better lit picture:

DBSAR
DBSAR's picture
Offline
Last seen: 1 day 4 hours ago
Joined: 02/11/2013 - 23:28
Posts: 6401
Location: Newfoundland, Canada
skatiol wrote:

I ordered from Aliexpress and got a Sofirn A4 board, no powerbank function compared to the A2. edit: I was wrong


Indicator button on mine is blue in use and in standby and orange when charging.


BLF LT1 A4 board


 

odd.. i haven’t seen this version of the MCPCB before. I don’t know why Sofirn is changing the boards in this manner. Maybe Barry can answer these questions?

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

TheIntruder
Offline
Last seen: 3 days 26 min ago
Joined: 03/09/2018 - 02:11
Posts: 371
skatiol wrote:

I ordered from Aliexpress and got a Sofirn A4 board, no powerbank function compared to the A2. edit: I was wrong


Indicator button on mine is blue in use and in standby and orange when charging.

Yikes, it some thought green was objectionable, then blue could be a deal breaker.

Reserve the blue beacons for things like locating phones to summon campus security.

Cigarguy
Offline
Last seen: 2 hours 32 min ago
Joined: 10/25/2021 - 00:31
Posts: 26
Location: Calgary, AB, Canada

Pick a colour, any colour and someone somewhere will not like it. Just human nature. I myself I’m used to red, yellow/orange and green from traffic lights and traffic signs. My mind associate those colours to certain pattern of behavior.

Both of mine are a steady green in normal use with blue and orange when used as a power bank or charging. I lower the intensity of the LED button because I prefer it that way. I had it off for a while and found that I miss having the green indicator light. I use one almost everyday on the jobsite and always 1/4 turn to manually unlock before putting it back into its storage bag. It’s good to know at a glance that it is ready to go and do not require 1/4 turn to engage the batteries and vice versa when I’m ready to put it away.

mlodyulek
Offline
Last seen: 3 weeks 6 days ago
Joined: 05/06/2017 - 07:16
Posts: 34
Location: NorthEast
FlashPilot
FlashPilot's picture
Offline
Last seen: 7 hours 2 min ago
Joined: 05/10/2010 - 16:07
Posts: 4829
Location: USA

mlodyulek wrote:
https://www.etsy.com/shop/printedniche?ref=simple-shop-header-name&listi...

If anyone needs any accessories for LT1

Well done!

d_t_a
Offline
Last seen: 1 day 7 min ago
Joined: 08/04/2017 - 23:58
Posts: 2656
Location: Manila, Philippines
skatiol wrote:

It does have a powerbank function, didn’t get it to work yesterday with the same cable for some reason. The version is 202108290621. Here’s a better lit picture:


Thanks for the info. So it looks like the BLF-LT1-A4 has an updated Anduril version

For reference: the BLF-LT1-A2 – Anduril 2 version check shows 2021-01-25 model 621, so this A4 has a more updated firmware version (January 2021 vs August 2021). Not sure if there are any significant differences though between those 2 versions.

However, I wonder if any chips inside the driver board could also have changed…

zumlin
Offline
Last seen: 13 hours 47 min ago
Joined: 08/29/2021 - 08:42
Posts: 7

I got a LT1 with the latest board and tested the 8 flashing pads and the 8 pins of the ATtiny85 with a multimeter. I can confirm that they correspond to each other. See the labelled photo below.

I am going to try to update it to the latest firmware with 200% turbo once I get my SOIC clip.

TheIntruder
Offline
Last seen: 3 days 26 min ago
Joined: 03/09/2018 - 02:11
Posts: 371

I see an opportunity for an intrepid party to create an easy flashing adapter jig for the later driver boards with the non-standard pad layout.

It’s something that I imagine a 3D printer would be well suited for.

There’s a big ole hole formed by the contact ring that would neatly accommodate a disc or short cylinder with contact pins, directly connected to the flashing apparatus. The two mounting screws/holes make for easy indexing/reference points.

Or, with short jumpers to a standard connector, serve as an adapter plate of sorts. Emisar’s reflashing kit looks like it uses a standard header connection to the pin end, so unplug that from the ribbon cable, plug in the LT1 adapter plate, and voila, Bob’s your uncle.

The screw holes could also make an alternative “bridge”-like design feasible, without having to use additional material to solely for locating purposes within the hole with a disc.

Depending on when the firmware is loaded in the production process, I wouldn’t be surprised if the factory might already employ something like this..

Flashing flashlight firmware is a niche within a niche, so it’s not an idea that will form the basis of a business empire, but it would be a neat community project.

Anyone up for it?

zumlin
Offline
Last seen: 13 hours 47 min ago
Joined: 08/29/2021 - 08:42
Posts: 7

TheIntruder wrote:
I see an opportunity for an intrepid party to create an easy flashing adapter jig for the later driver boards with the non-standard pad layout.

It’s something that I imagine a 3D printer would be well suited for.

There’s a big ole hole formed by the contact ring that would neatly accommodate a disc or short cylinder with contact pins, directly connected to the flashing apparatus. The two mounting screws/holes make for easy indexing/reference points.

Or, with short jumpers to a standard connector, serve as an adapter plate of sorts. Emisar’s reflashing kit looks like it uses a standard header connection to the pin end, so unplug that from the ribbon cable, plug in the LT1 adapter plate, and voila, Bob’s your uncle.

The screw holes could also make an alternative “bridge”-like design feasible, without having to use additional material to solely for locating purposes within the hole with a disc.

Depending on when the firmware is loaded in the production process, I wouldn’t be surprised if the factory might already employ something like this..

Flashing flashlight firmware is a niche within a niche, so it’s not an idea that will form the basis of a business empire, but it would be a neat community project.

Anyone up for it?

To be honest, it is very easy to get to the chip on the LT1, you just need to unscrew 2 screws and the driver pops out, there is no glue and no need to desolder anything.

It literally takes less than a minute.

Once you have access to the chip you can just use a standard SOIC clip to flash it.

supreme
Offline
Last seen: 1 day 1 hour ago
Joined: 11/20/2020 - 12:18
Posts: 198

Length of tripod screw? 1/4 in.-20 x ?

zumlin
Offline
Last seen: 13 hours 47 min ago
Joined: 08/29/2021 - 08:42
Posts: 7

I upgraded the firmware on my LT1.

Long story short, the firmware installed successfully but my light isn’t functioning properly at the moment because the switch is broken.


goshdogit
goshdogit's picture
Offline
Last seen: 9 hours 4 min ago
Joined: 12/03/2015 - 21:28
Posts: 1396

supreme wrote:
Length of tripod screw? 1/4 in.-20 x ?
I just took measurements of my LT1 from the very first batch.

I’m not sure if these dimensions have remained consistent.

bottom tripod hole: 5.64mm or approx 0.22”

side tripod hole: 7.83mm or approx 0.30”

dropman
Offline
Last seen: 1 day 20 hours ago
Joined: 02/03/2019 - 11:04
Posts: 79

Cant find anywhere does LT1 has low voltage protection? I am asking because somehow my LT1 stopped working and when I checked batteries they were totally empty I dont remember exact voltage but it was close to 0V. I have newest driver from Sofirn with powerbank function.

Helios azimuth
Offline
Last seen: 20 min 58 sec ago
Joined: 04/08/2019 - 22:23
Posts: 359
Location: Sierra Nevada Mountains

Yes, it has low voltage protection, so most of us use unprotected batteries.

Wrench
Offline
Last seen: 1 week 5 days ago
Joined: 02/12/2019 - 11:43
Posts: 39
Location: Minnesota

Question: I just received my BLFLT1 with the A2 driver board and green LED’s. I’m trying to use the power bank function without any success. It will not charge my original LT1 or my SP36 BLF. When connected to my S21 Ultra it charges at 300 mA which is not enough to keep the screen on and hold its own let alone charge the phone. My USB DMM reports 4.75 volts at .294 amps when attempting to charge my phone. I tried every USB C to USB C cable I own and see the same. Several are higher end Anker cables. Any info appreciated.

Pages