MTN Electronics: LEDs - Batteries - Lights - Chargers - Hosts - Drivers - Components - 1-Stop-US Source

feralcomprehension · 2017-07-11T02:55:10.000Z

Hat tip to Richard at Mtn for helping me solve a self-inflicted H17F driver issue quickly, patiently, and utterly without drama. Richard, your rep for excellent customer service is clearly well-deserved. Thank you again for your help!

JasonWW · 2017-07-11T17:39:09.000Z

I see you have the xhp70.2 in stock. I’ve put my order in! Thanks.

Cousin_Elmer · 2017-07-11T07:10:50.000Z

RMM:

…. the H1A is really really close to what I was going to build anyways, but I could never touch that price point. They are even using the same IC, even though they scratched the markings off LOL (TPS61088).

If you did build some with a customizable UI I’d buy one for each of the MT-G2 emitters I’ve bought from M.E. over the past few weeks; and probably buy a couple more MT-G2s from your remaining stock. I’d pay at least what I’ve paid for the H17F drivers.

The next best thing would be to figure enough about how the H1-A works to be able to write firmware for the PIC controller. My electronics skills are likely insufficient but if the super nerds in the community figure it out I can program the controller.

RMM · 2017-07-11T14:57:56.000Z

feralcomprehension:

Hat tip to Richard at Mtn for helping me solve a self-inflicted H17F driver issue quickly, patiently, and utterly without drama. Richard, your rep for excellent customer service is clearly well-deserved. Thank you again for your help!

Thanks for your patience as well. Glad we got it figured out!

RMM · 2017-07-11T15:06:26.000Z

Cousin Elmer:

RMM:

.... the H1A is really really close to what I was going to build anyways, but I could never touch that price point. They are even using the same IC, even though they scratched the markings off LOL (TPS61088).

If you did build some with a customizable UI I’d buy one for each of the MT-G2 emitters I’ve bought from M.E. over the past few weeks; and probably buy a couple more MT-G2s from your remaining stock. I’d pay at least what I’ve paid for the H17F drivers. The next best thing would be to figure enough about how the H1-A works to be able to write firmware for the PIC controller. My electronics skills are likely insufficient but if the super nerds in the community figure it out I can program the controller.

The final version is making progress. The have had a working power module for about 1.5 years, but the issue was that the PWM response curve was not linear. I've got the RC filter values all figured now so you can use our normal ~19 kilohertz PWM signal on the input of the op-amp and get a linear response biasing the feedback voltage, therefore linearly changing the output, but still without any PWM ripple on the output (true constant current dimming). Worked on the PCB a bit again yesterday and am hoping to finish it up soon. Just need to make a few more component libraries and finish up component selection. Again, no ETA, but I am committed now and will release the drivers as soon as they are ready.

Prototyping always makes a mess! I finally have some decent tools though...early on I was just doing everything by trial and error. With enough time and determination you can make that work, but this speeds up the process significantly. Equations give you a good starting point, but as in chemistry or anything else most of the simple equations deal with ideal components / reagents --- things that simply do not exist in the real world.

RMM · 2017-07-11T22:21:06.000Z

D4 Flashlight Pre-Order Update:

The flashlights have arrived! We are going through and testing them all now and will begin shipping them later tonight and throughout tomorrow, so if you pre-ordered be looking for a notification soon!

PBWilson · 2017-07-11T22:29:41.000Z

Ahead of schedule? That’s almost unheard of! Thanks!

Gunga · 2017-07-12T02:45:33.000Z

Any clips?

mattlward · 2017-07-12T02:52:12.000Z

I think we will have to build our own clip. I am thinking 2 threaded holes on the flat of the tailcap and a decent clip 90 degree bent.

T18 · 2017-07-12T02:52:44.000Z

RMM:

D4 Flashlight Pre-Order Update:

The flashlights have arrived! We are going through and testing them all now and will begin shipping them later tonight and throughout tomorrow, so if you pre-ordered be looking for a notification soon!

Hurray, Thanks Richard for putting up the pre-order page as you did.
Looking forward to your notice.

RMM · 2017-07-12T03:32:11.000Z

Gunga:

Any clips?

The deep carry clip actually fits very securely on the light. It is going to rub the tailcap a bit when you take it and off unless you pull the clip away as you tighten and loosen the tailcap.

EasyB · 2017-07-12T03:46:14.000Z

Richard, are you going to stock the new 5500mAh shockli 26650 cells?

RMM · 2017-07-12T04:01:34.000Z

EasyB:

Richard, are you going to stock the new 5500mAh shockli 26650 cells?

Yes, I actually have them....thought I listed them but I guess we never enabled the listing. They are more like a 27650 BTW (very wide diameter).

Here they are.

hatman · 2017-07-12T06:48:54.000Z

RMM:

Gunga:

Any clips?

The deep carry clip actually fits very securely on the light. It is going to rub the tailcap a bit when you take it and off unless you pull the clip away as you tighten and loosen the tailcap.

Excellent — thanks!

dekozn · 2017-07-12T12:14:14.000Z

Does the D4 also have presets for low mid and high or is it ramping only? Ramping might be nice but I think it ’ll be difficult to estimate runtime while actually using it.

Cousin_Elmer · 2017-07-12T12:20:44.000Z

RMM:

Cousin Elmer:

RMM:

…. the H1A is really really close to what I was going to build anyways, but I could never touch that price point. They are even using the same IC, even though they scratched the markings off LOL (TPS61088).

If you did build some with a customizable UI I’d buy one for each of the MT-G2 emitters I’ve bought from M.E. over the past few weeks; and probably buy a couple more MT-G2s from your remaining stock. I’d pay at least what I’ve paid for the H17F drivers. The next best thing would be to figure enough about how the H1-A works to be able to write firmware for the PIC controller. My electronics skills are likely insufficient but if the super nerds in the community figure it out I can program the controller.

The final version is making progress. The have had a working power module for about 1.5 years, but the issue was that the PWM response curve was not linear. I’ve got the RC filter values all figured now so you can use our normal ~19 kilohertz PWM signal on the input of the op-amp and get a linear response biasing the feedback voltage, therefore linearly changing the output, but still without any PWM ripple on the output (true constant current dimming). Worked on the PCB a bit again yesterday and am hoping to finish it up soon. Just need to make a few more component libraries and finish up component selection. Again, no ETA, but I am committed now and will release the drivers as soon as they are ready.

Prototyping always makes a mess! I finally have some decent tools though…early on I was just doing everything by trial and error. With enough time and determination you can make that work, but this speeds up the process significantly. Equations give you a good starting point, but as in chemistry or anything else most of the simple equations deal with ideal components / reagents —- things that simply do not exist in the real world.

That’s outstanding news. Since I prefer 1x18650 lights I’ve had to wait for something like the H1-A UI to experience an MT-G2. I love the MT-G2 but the thought of settling for the H1-A UI is disheartening. So this news makes me happy :). FWIW I’ll probably still take a shot at programming the H1-A; but I’ll be near the front of the line for your driver.

BTW here is a Convoy M2 with an MT-G2 and an H1-A . Fitting a 20mm driver into the M2 was a bit of a mess (at least the way I did it…). I claim that with a little care and a Dremel a 20mm driver can fit cleanly inside a Eagle Eye X6/A6/F30; but I have yet to prove that claim.

AEDe · 2017-07-12T12:53:51.000Z

What are the D4 driver sizes? Perhaps there is a chance to pick a good constant current driver.

Camo5 · 2017-07-12T15:10:17.000Z

Wow, I bought the last remaining 219C in black I think…thank goodness for impulse buys xD

RMM · 2017-07-12T16:44:52.000Z

dekozn:

Does the D4 also have presets for low mid and high or is it ramping only? Ramping might be nice but I think it 'll be difficult to estimate runtime while actually using it.

I actually am not sure. I haven't used the light a lot. Tom E. should be able to fill in all of the details on the firmware...I wasn't provided with a full list of the functions.

saypat · 2017-07-12T17:01:53.000Z

looking forward to some reviews of this light……