17mm 12x7135 drivers with custom firmware (Group Buy Interest thread)

Off time memory is supported!

Just how many cases of premium beer did you send these folks to make them like you so much? :bigsmile:

Cheers! :beer:

LOL

I’m guessing they hope to sell us a bunch of these and if they do it right they will be correct. I can see me going back to them over and over if they are always this easy to deal with. If they are just blowing smoke up my backside then they won’t even get this order. Nice that they offered a sample right away though. That tells me they at least have confidence that they can get it done correctly.

I got all the traces routed on the primary side along with leaving the 1/2mm clearance ring on the outer edge for the pill shoulder.
A conventional 5x 7135 is possible with no signal vias going through the board… only the ground ring and the positive spring pad.
It is surprising just how much room there is for routing 5x 7135’s. This would be the old AK-47A on ’roids.
To make it two sided, the 7x 7135’s are fed with strategic vias back to the primary side.

I have no intention to compete with 18650 here. I just wanted to have a quick look. And yes, it is doable.
I have my own projects and certainly have a different requirement for the modes. Stacking 7135’s on top of each other is much easier for a 1-4 off.

Doing that on a 15mm board was difficult…well…5 total chips (not 5 on each side)

- TheStar FW or simpler Qlite FW (2 choices)

- Off-time memory

  • Come with 4.2A

Thank you very much 18sixfifty! How can I not ordering a few (plenty…)!

You guys are awesome. :beer:

Off-time memory sounds great! I need to update TheStar to support it well..

wight has now been testing the TheStar Off-time v0.1 (which I coded kind of blindfolded, as I don't have any 1uF caps for testing at the moment)

The challenges in porting TheStar to off-time are the lack of memory and especially stars.. We can't have all the options we have in the on-time version. :(

At the moment I'm planning to have mode order and tacticool switches => Options are L->H (with off-time memory), H->L (with off-time memory), Tacticool (no memory) & Single mode (no memory). Is this ok for everyone, or would it be better to provide only mode order and memory switches? => Options would be L->H (with off-time memory), H->L (with off-time memory), L->H (with off-time NO memory) & H->L (with off-time NO memory)

Any comments / opinions?

I prefer to have the ability to setup offtime with no memory.

Will the Tacticool be strobe first then H > L?

Yup +1, in total agreement.

off-time without memory is the best :-)

Strobe -> Turbo -> Low (no memory).

“default” mode select and no memory :bigsmile:

SWEET! When do we order?

Once I get everyone on board with exactly what firmware, I’ll have them send a sample for inspection. After that I’ll set up the actual group buy. I’m not worried about them being able to input the firmware but I am a little worried about how they are going to stack the resistors.

Tacticool config is currently losing 1-3 to plain old memory switch.

However, I can always flash some tacticool drivers and send them to you in case the other option wins. :)

That will be great. I’ll be getting a bunch. These will be a hit a work.

So is this driver GB a go or no-go?

I am in for H>M>L like q-lite I guess

the tactical is for socking badguy in puss with a strobe on initial turn-on right?

If you build them I will buy a few as long as they don’t break the bank

It’s a no go for now. Just not enough interest and they don’t want to do the custom unless I can place a larger order.

I’ll probably revisit it sometime later.