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

If you don’t want to deal with first-batch-problems, don’t get the first batch.

A finished product should be finished, one can’t argue against that.
However especialy this first batch is for the enthusiasts in this forum and they know how to, and even want to “stuff” with there lights.

First batch is the real production test, thats why we get it for cheap and/or early. Things like that solder are most the improvements that you get in 2nd and 3rd batches.

But dont worry, help will be given. That I am certain of.

I think it’s one of the risks you take in making a customizable flashlight. I like the path the development team chose for the BLF community. Being batch 1 and lexel already redesigning a parallel layout sound more than nice.

I personally can not be bothered if these pads are wrongly soldered. The light will work fine, just slightly out of balance wich is easily fixed with a pocket knife or solder iron if it were to bother someone.

For those whom received the lantern, any major issue with the first batch?

I just got mine and having playing around with it all afternoon. So far I haven’t noticed any problems other than the o-ring not being of any use since it slips off so easily. Even that can be fixed by using a little glue to hold it in place. So even with an early production model mine looks as well produced as can be.

Here is a picture of my board. The ones circled in red should be soldered (mine had nice solder blobs on them) and the ones in blue should come unbridged (not soldered). For some reason they are tinned which makes no sense since they are supposed to be bare metal. I wonder if they were originally bridged and then they realized they made a mistake so then unbridged them. To be honest I had to use my DMM to verifiy that 6 & 7 were indeed unbridged since the tinning makes it confusing.

One thing I will say is to toss the included manual away and instead download the manual that Lux-Perpetua created here

!!

I have no USB charge

USB charging fixed…. not compatible with my usb C pixel chargers…( I have 3)

None that I can see so far in 6 hours playing with it.

The switch light doesn’t change to red and go green when you plug in the charging cable?
Have you tried different charging bricks? Different cables?

I don’t suppose you’ve seen my sig line?

USB charging fixed…. not compatible with my usb C pixel chargers…( I have 3)
works with included cable and computer. Anker cable in the car, the rubber part is a bit wide for the slot in the LT1
Derp

glad you figured it out :+1:

Ugh. That sounds like the LT1 doesn’t include the right resistors. If that’s the case then charging is not going to work with a USB-C to USB-C cable.

Ok, that’s Is what the Pixel chargers use… I guess one more charger cable on the desk.

Just to be specific, you’re saying your Pixel USB-C cables are too thick around the plug to fit in the LT1 socket?

Negative. Pixel C-C plugs fit fine, they just won’t charge it
Supplied cable charges when used with a computer or other USB A charger

The heavy duty Anker cables I have, USB s to USB C, thosr are a bit too thick to plug in properly without forcing…Just a big, I could file them down probably.

So, to be clear, I could not charge using USB c to USB c cable. no physical limitation, just… something elecrical

Similar to the problem they ran into with the Raspberry Pi 4. they ade an error in the layout and connection of components inside the LT1… does not syrictly conform to the USB-C standard. One resisitor used insted of two separate ones??? Just with certain e-marked
cables

IF that is the issue…. For anyone who is interested…. link

What is the difference in battery life if I solder the the remaining LEDs and run it at the highest output?

There are 5 chips enabled by default, and it can go up to 7. The way the math works out is pretty simple:

If you give it 7/5ths as much power, the runtime is 5/7ths as long.

I am guessing the Google Pixel chargers must have some sensitive circuitry that is limiting it compatibility with other devices outsode the Pixel phone? As we know the LT1 only has the USB-C port, but its charging circuit is the TP5100 controller chip, which has a vast voltage control range from about 4.2 volts up to 17+ volts. There may be some issue of how the TP5100 is causing the Pixel charger to not activate or send power. I have tested the production prototype LT1 (USB-C / TP5100) with dozens of different chargers i have, ( a HTC One charger, several Samsung Chargers, Iphone charger, several different wall adapter USB chargers, car-socket USB chargers, Solar Panels, several power banks, several wall-outlet built-in USB ports, the USB ports on my laptops, and others, all worked good in charging the LT1. However i know there are a couple USB-C charge cables i have tested, that have very large plastic plugs, and have a hard time fitting in the LT1 socket, but most i have fit no problem.

One of the ideas i was thinking of is to have micro-DIP switches in place of soldering bridges, but that would likely add cost that we were desperately trying to keep down but have the main features it has. Maybe for a eventual deluxe LT2 that can be a option, as it will be a more expensive lantern with the power bank feature, remote control, and other luxury options. :smiley:

Sign me up for the deluxe LT2. Sounds awesome!!