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

I just looked at it zoomed way down to a small size like it might be on the light, and the font looks a little bit “fat” compared to the lines of the lighthouse lantern logo, which look very “thin”. Maybe there is yet some tweaking to be done, but it still looks good.

:+1:

:+1: :slight_smile:

:+1:

I like it. :+1:

Looks good, if we want we could even add a “real” name underneath it.
But maybe you could try to make the latern look older or more symbolised.

I like it. But I think the characters should be less fat; different font maybe.

And does it cost anything. It is probably a small number of seconds on the CNC machine making the rest of it. Getting something like paint in there ; a bit more.

I am not a CNC person. Would it make a difference in manufacturing if the logo used a V cut or tried for U.

It will be useful if power bank function can be applied.
That will reduce weight in mountain trips at all.

Sorry if this was discussed before.

The logo is not cut on a cnc. They use a laser. Normally a fiber laser e.g. a random video from the IN

Put me down for one

Welcome to BLF RichardBrown, I have you down at number 918 on the interest list.

Hello,
I am Interested in one.

welcome to BLF Malibu, I added you at number 919 on the interest list. By the way, I live just up the coast from the California city of Malibu. I was surprised to see someone from Germany choose that as a user name. :+1:

To potential lantern users and others, I am working on the driver design, which is a 4x7135 design with tint shift for two sets of LEDs. The basic driver is done. Several of you have requested other “features” in the design. I am looking for schematics diagrams of these features to incorporate into the driver as appropriate. The best would be a powerbank feature. Others include a simple cell charger.

For me, I have limited or no access to specialty tools for building this driver. So designs that incorporate ICs or components that required soldering with something other than a soldering iron I can not build and test. If you have access to such tools and are willing to help, that would be great. This is a team effort, and my time and skills are somewhat limited. I have learned a bit of PCB layout specifically for this project, which has been fun. How about you join in on the fun as well!

Wow! Looks like a great lantern. I’m definitely interested.

Wow, the last three folks who have expressed interest in this lantern have done so as new members of BLF. Welcome Richp, you are number 920 on the interest list.

I am number 832 on the list. I have two non-members who I showed the thread to and they are in. So please put me up for two more! Thanks

Got you for 3 total KevinZA1988, your next two numbers on the interest list are 921 and 922.

For the charger, the obvious starting point is the TP4056.

https://lygte-info.dk/review/Review%20Charger%20TP4056%20UK.html

Perhaps other newer chips are better, but the TP4056 is well established, and very inexpensive. If you need more than 1A you can parallel them. 1A is enough for an overnight (or daytime) charge. This lantern, if fully loaded with x4 18650s should last many days on one charge. If loaded with just one 18650 a 1A charge would be a fast charge.

To make it into a powerbank is much more complicated, there are several different incompatible protocols unless it is just to be a very basic charger, and it would also require another connector (unless going USBC). This has been discussed and rejected. Unless you can find an integrated chip that does it all, at a low price.

TBH, it would probably be easier just to fit a generic TP4056 PCB, including connector etc. as a separate board, plenty of space in the head, mechanically superior, easily replaceable when the connector wears out or is damaged. You can buy ten of them for under $2 delivered from China. Just connect it with four header pins.

PS: if you add the battery protection IC then it would also protect the cells from over-discharge.

Search “TP4056 battery protection”