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

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.

Honestly, can you just get them stock or not flashed…then flash them as people need them?

better yet…YOU come up with the stock firmware…if people want custom or specialized let them flash them themselves

If I do it again I’ll just do it with the firmware I pick and like you said if they want it flashed they can do it. There just wasn’t the response I thought I would get at all. I really thought that for this price and with custom modes and higher amps more people would have wanted them. I think people are just into the BLF drivers and I get that too.

One of these days I’ll get into flashing firmware myself but right now I’m just way too busy with other stuff. Plus I’m running XP and I don’t know if it’s compatible or not. Once winter hits I’ll have more time and might get back on this one and see if I can get it rolling again.

Don’t know why a “beefed” up nanjg I figure people that want barn buners w/o having to stack chips and all that would be all over these like a fat kid on a twinky…I would LOVE to have a few for sure (stacking 4x chips on the MCU side suxors)

yeah, the flashing firmware is compatible with 32 bit XP, AVRdude comes stock with WinAVR I believe
(apparently the install deletes the PATH info…be careful)

I think the number is just very daunting. I’ll be in for 5, just need 200 people more! Maybe a kickstarter campaign is a good idea so the financial burden isn’t just on you.

That’s the caveat…the BLF drivers people build by onsies and twosies…to get a good discount on a bulk order, someone has to plunk down for a few hundred or more…otherwise the savings just ain’t all that great (this is why the drivers you get from FT and other places are so cheap, they have already made thousands in Chinese sweat shops)

My other concern is just how well they would pull off the stacking. I guess I could send them the firmware and get a sample. It would be cool to see just how well they do it. I didn’t want to jerk their chain and demand a sample if I didn’t think I had enough people to pull it off. I’m in no financial position to take a large bite on this either so that was another concern.

Well “THE” if you read this and want to send your firmware without knowing if we are going to get a deal or not let me know. That was the other thing, I didn’t know that I wanted to make them a free gift of the firmware if we are not going to have enough numbers to order.

will take 6

I think stacking chips is a manufacturing nightmare. You want to be able to pick-and-place components. It would be much better to have a stacked pair of boards where you have pins pass the 3 signals to the daughter card. Say a 17mm main board to a 15mm daughter card. This way you can make the battery side blank and maybe even pass positive onto the daughter card for easy LED hookup.

NightSpy I think you actually need 4 connections to the daughterboard: B, B~~, PWM, LED~~. The last connection is from the LED- of the 7135’s on the main PCB. Routing B around the daughterboard is a sketchy proposition in terms of space I think. Note that Mattaus has already got 16mm slave boards on the Oshpark Projects thread, check the OP.

18sixfifty, weren’t they going to send you a sample? I guess that fell through?

Yea, that was the intent in my last sentence. Programming too can become problematic so the MP may also wish to be on the daughter card. I haven’t looked at the best component distribution yet, but there are options here. Using a common 4-pin header or 2x 2-pin interface would really facilitate assembly.