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

Cost is definitely a factor we want to keep down.

I take everyone’s suggestions & ideas as important as it helps make the project better and more of what everyone want to have in a lantern when possible :slight_smile: I have started the cross-section drawing to send to Thorfire and the specification perimeters for them to have a plan start to work on what they can do to make it into production.

Will this light need pointed batteries?

If you mean “button top” batteries, the answer is this is prefered. The positive contact is a trace on a circuit board, so the button top would make a sure connection here. I am hoping I can use old laptop pull batteries with the attached connection tabs foormed such that it will simulate a button top, we will see if that works or not.

That all sounds pretty reasonable. I’m glad I don’t really have to care what exactly the LEDs are, as long as they perform well enough. :slight_smile:

I just made some things a few days ago which used a bunch of cheap LEDs, and it all turned out pretty okay. Granted, soldering on each pixel individually was a bit of a pain, but the overall effect is nice.

Anyway, when we’re farther in the process, send me a prototype and I’ll make it work.

Put me on the list for 1 at this time!

you are now 821 on the interest list

interest list sorted by entry number

interest list sorted by user names

These links are always updated to the latest versions of the lists.

So far the LH351D 4000K High-CRI LEDs are my favorites for a balance of efficiency, tint color, & CRI, Have not tested the 3000K 351Bs yet, but will be when i get to my east cast destination. Also adding a fourth 7135 AMC to the driver to increase output for testing. was curious if Samsung has the LH351D available in 5000K high CRI? (for that tint-blending option.

They do.

However, the only source I have found of 5000k 90CRI+ emitters in small quantities is Digikey.

Is there a reason you don’t want to go to a lower temperature like 3000k? To me if I’m camping I want something close to fire light and as warm as possible.

Candle/fire tints are around the 2000K range, I had one LED of that tint, but found it’s tint to be very yellow/orange, (close to that of a fire flame) and seemd to be somewhat not very efficient for higher outputs. I have a few Strawhat 5mm LEDs of the 2000K candle tint range that i swapped on some nightlights as they give that candle glow effect, but seems to be to yellow for a brighter lantern. 3000K is what is in the V1 prototype now.

Agree that 2000 would probably be too low. I’d have to see it in person but from the prototypes I kinda like the 3000k over 4000k photo. Totally understand that the 4000k will have more brightness overall though.

UPDATES: - I will be leaving on June,6th to drive to NovaScotia & Newfoundland. I have the prototype lanterns packed up, with the tools to do LED swaps & testing while there during camping trips. I will also finish the design cross-section drawing for the new lantern to send to Thorfire too there as i will have my laptop with me. Will post the drawings next week here for everyone to have a look at before i submit them to Barry at Thorfire to begin the work to get it rolling :slight_smile:

Have a great and safe trip DBSAR! :smiley: Looking forward to the next round of field results.

Man, trip after trip. You, Sir, are living the good life. I envy you. Enjoy and have safe trip.

I’m in for 2

Enjoy your trip, and take a few photos of your mobile modding workspace! :+1:

added to the interest list at 822 and 823

Again USB Type-C:
Memorandum of Understanding on the future common charging solution for smartphones

_USB Type-C™ to be the common charging interface for
other types of portable electronic equipment as mentioned in the Radio Equipment Directive 2014/53/EU (article 3.3a).
In furtherance of this end, signatories agree to gradually transition to the new common charging solution for Smartphones based on USB Type-C._

http://www.digitaleurope.org/DesktopModules/Bring2mind/DMX/Download.aspx?Command=Core_Download&EntryId=2630&language=en-US&PortalId=0&TabId=353

So maybe v2/batch two of the BLF Lantern could be equipped with Type-C port Don’t have to be USB 3.x electronically.
But support for programming with software would be a nice feature.

It’d be awesome to have a usbasp inside, connected to the MCU for easy reflashing over USB. I don’t think it’ll happen though. :slight_smile:

Maybe a later version can use a beefier MCU with USB support built into a bootloader, and reflash directly over USB. That’s not attiny territory though; it’s more something I see on atmega chips.