Loneoceans GXB172 Driver Group Buy

143 posts / 0 new
Last post
pc_light
pc_light's picture
Offline
Last seen: 3 hours 17 min ago
Joined: 03/24/2017 - 16:19
Posts: 482
Location: United States

Since I was getting 1 out of curiosity rather than for a specific need, $30 would be over my limit.

I was going to suggest revisiting your idea of bundling/kitting the components for a DIY build until I notice how incredibly small the parts are. There’s no way I could hand shoulder those parts.

Sad

Seeking the light.

netprince
Offline
Last seen: 5 hours 11 min ago
Joined: 06/14/2012 - 13:48
Posts: 657
Location: Virginia
Interested depending on price… cool!
nzoomed
Offline
Last seen: 4 months 4 days ago
Joined: 08/01/2019 - 03:32
Posts: 120
Location: New Zealand

pc_light wrote:
Since I was getting 1 out of curiosity rather than for a specific need, $30 would be over my limit.

I was going to suggest revisiting your idea of bundling/kitting the components for a DIY build until I notice how incredibly small the parts are. There’s no way I could hand shoulder those parts.

Sad


lol this is exactly why I explored this option in the first place! Not many people have reflow ovens or stations either.
I probably can carefully solder the components alright, and have already ordered some boards, so probably will end up doing that at some point just for the exercise i guess!

The main benefit is that doing a bulk order is actually still cheaper than assembling by hand and you dont have to worry about damaging anything, testing, troubleshooting etc.
Building this driver yourself can easily cost over $40USD, by the time you take shipping for components into account.

nzoomed
Offline
Last seen: 4 months 4 days ago
Joined: 08/01/2019 - 03:32
Posts: 120
Location: New Zealand
netprince wrote:
Interested depending on price… cool!

Price per driver will definitely be around $30 +/- $1 at current quotes for 100 boards.
Will update the thread to reflect this.

Umpi2000
Offline
Last seen: 1 day 18 hours ago
Joined: 03/15/2017 - 08:06
Posts: 417
Location: Durban, South Africa

Are all the components going to be quality and to loneocean’s specs precisely?

What are the UI options Going to be?

nzoomed
Offline
Last seen: 4 months 4 days ago
Joined: 08/01/2019 - 03:32
Posts: 120
Location: New Zealand

Umpi2000 wrote:
Are all the components going to be quality and to loneocean’s specs precisely?

What are the UI options Going to be?

I will keep it standard spec, per loneoceans guidelines.
You can change a few options through the jumpers or tweaking values in the firmware.
If I end up having to program them all manually, I guess I can do custom settings if people request it.

thijsco19
Offline
Last seen: 3 weeks 5 days ago
Joined: 12/14/2012 - 16:18
Posts: 1384
Location: Nearby Rotterdam, the Netherlands

Though to price is a bit high, I might be interested in 1.

id30209
id30209's picture
Offline
Last seen: 1 day 37 min ago
Joined: 05/17/2018 - 12:20
Posts: 2108
Location: Croatia

I have to cut on half my requirement, 1x17mm and 1x20mm. Several FET switches board are still needed.

WTB Titanium 4sevens 2xAA tube

Umpi2000
Offline
Last seen: 1 day 18 hours ago
Joined: 03/15/2017 - 08:06
Posts: 417
Location: Durban, South Africa

nzoomed wrote:
Umpi2000 wrote:
Are all the components going to be quality and to loneocean’s specs precisely?

What are the UI options Going to be?

I will keep it standard spec, per loneoceans guidelines.
You can change a few options through the jumpers or tweaking values in the firmware.
If I end up having to program them all manually, I guess I can do custom settings if people request it.

Can’t you run a vote for one specific UI? It’ll simplify it surely?

Agro
Agro's picture
Online
Last seen: 46 sec ago
Joined: 05/14/2017 - 11:16
Posts: 6936
Location: Ślōnsk

nzoomed wrote:
skinny_tie wrote:
I think 30 USD (~44 AUD) is too much for me since I don’t really have a plan for the driver. It doesn’t seem unreasonable for a small run of a unique product, I just can’t justify it for myself.

What kind of quantity is required to bring the unit cost down?


The highest cost of the board is the components, coming in just shy of $20 per board, the total costs for production and assembly of the PCB’s is $549.

Please note that this cost of the assembled board is far cheaper than if you were to assemble it yourself. Even if we did a group buy of the PCB’s themselves, you are still looking at least $30 or more, not to mention shipping costs.
Mouser quotes me just shy of $22USD for the components to do a single driver. Then you have to buy the inductor off coilcraft which is around $4USD, so there is definitely a big saving made here.
We definitely could get the driver cost down under $30 with more orders.
As it stands, the quoted price for 100 boards stands at $2567 USD, so already is under $30USD, but im taking other factors into account, such as 15% import tax I will face upon receiving the goods.
They also charge $52USD for shipping to me.
So taking all that into account the total is $3004.
So im not out of pocket, I will have to charge extra for paypal fees on top of all of this, then there is international shipping on top of all this for each buyer, I dont imagine this to be much, and will use the most cost effective method.

The only way we will cut down costs is by making more boards.
Question is, can we fill up this first 100 orders? I dont want to be out of pocket with a whole bunch of drivers I cant sell. I think we could easily fill up 50 orders, but not sure about 100 quite yet.
Are most builders from candlepowerforums over here too, or should I start a thread over there too?


Post may lose a package or 2 and you’ll be the one to take the loss. Take it into account while calculating the price.
nzoomed
Offline
Last seen: 4 months 4 days ago
Joined: 08/01/2019 - 03:32
Posts: 120
Location: New Zealand

Agro wrote:
nzoomed wrote:
skinny_tie wrote:
I think 30 USD (~44 AUD) is too much for me since I don’t really have a plan for the driver. It doesn’t seem unreasonable for a small run of a unique product, I just can’t justify it for myself.

What kind of quantity is required to bring the unit cost down?


The highest cost of the board is the components, coming in just shy of $20 per board, the total costs for production and assembly of the PCB’s is $549.

Please note that this cost of the assembled board is far cheaper than if you were to assemble it yourself. Even if we did a group buy of the PCB’s themselves, you are still looking at least $30 or more, not to mention shipping costs.
Mouser quotes me just shy of $22USD for the components to do a single driver. Then you have to buy the inductor off coilcraft which is around $4USD, so there is definitely a big saving made here.
We definitely could get the driver cost down under $30 with more orders.
As it stands, the quoted price for 100 boards stands at $2567 USD, so already is under $30USD, but im taking other factors into account, such as 15% import tax I will face upon receiving the goods.
They also charge $52USD for shipping to me.
So taking all that into account the total is $3004.
So im not out of pocket, I will have to charge extra for paypal fees on top of all of this, then there is international shipping on top of all this for each buyer, I dont imagine this to be much, and will use the most cost effective method.

The only way we will cut down costs is by making more boards.
Question is, can we fill up this first 100 orders? I dont want to be out of pocket with a whole bunch of drivers I cant sell. I think we could easily fill up 50 orders, but not sure about 100 quite yet.
Are most builders from candlepowerforums over here too, or should I start a thread over there too?


Post may lose a package or 2 and you’ll be the one to take the loss. Take it into account while calculating the price.

I would be, and hence why I would only go with tracked shipping.

nzoomed
Offline
Last seen: 4 months 4 days ago
Joined: 08/01/2019 - 03:32
Posts: 120
Location: New Zealand

Umpi2000 wrote:
nzoomed wrote:
Umpi2000 wrote:
Are all the components going to be quality and to loneocean’s specs precisely?

What are the UI options Going to be?

I will keep it standard spec, per loneoceans guidelines.
You can change a few options through the jumpers or tweaking values in the firmware.
If I end up having to program them all manually, I guess I can do custom settings if people request it.

Can’t you run a vote for one specific UI? It’ll simplify it surely?


Well most of the settings people would want to change can be done themselves with the soldering iron and shorting out the jumper pads.
the default settings will be fine for most users I would imagine. Some who want to run different voltages may need to change the firmware.

If there is a specific firmware change required, Im sure this can be done at extra cost.

aswang
Offline
Last seen: 1 month 3 weeks ago
Joined: 07/17/2018 - 07:53
Posts: 284
Location: Philippines

aswang wrote:
In for 2 × 17mm and interested in 2 × 20mm.

Got too excited. If the price is around 30 USD, change my interest to just the 2 17mm drivers. Thanks for doing this nzoomed.
nzoomed
Offline
Last seen: 4 months 4 days ago
Joined: 08/01/2019 - 03:32
Posts: 120
Location: New Zealand
aswang wrote:
aswang wrote:
In for 2 × 17mm and interested in 2 × 20mm.
Got too excited. If the price is around 30 USD, change my interest to just the 2 17mm drivers. Thanks for doing this nzoomed.

All good.
Still waiting to get more numbers of interested, so feel free to spread word around. Smile

rngwn
rngwn's picture
Offline
Last seen: 2 days 11 hours ago
Joined: 05/17/2018 - 03:44
Posts: 437
Location: 暖武里,Таиланд

Any host recommendation for these drivers?

nzoomed
Offline
Last seen: 4 months 4 days ago
Joined: 08/01/2019 - 03:32
Posts: 120
Location: New Zealand

rngwn wrote:
Any host recommendation for these drivers?

Any single cell host that accepts a 17mm driver.
I expect most of us will be putting them in a convoy S2+ or similar host, as they are the most popular.

The tailcap board is also designed for the Convoy S2+

id30209
id30209's picture
Offline
Last seen: 1 day 37 min ago
Joined: 05/17/2018 - 12:20
Posts: 2108
Location: Croatia

17mm in S2+
20mm in S21A

WTB Titanium 4sevens 2xAA tube

rngwn
rngwn's picture
Offline
Last seen: 2 days 11 hours ago
Joined: 05/17/2018 - 03:44
Posts: 437
Location: 暖武里,Таиланд

I’m just having this nagging feeling that pulling 50w out of a single 18650 might not be the greatest idea.

nzoomed
Offline
Last seen: 4 months 4 days ago
Joined: 08/01/2019 - 03:32
Posts: 120
Location: New Zealand
rngwn wrote:
I’m just having this nagging feeling that pulling 50w out of a single 18650 might not be the greatest idea.

I dont think many people would be doing this, technically the driver can pull 50W, but with the default settings, max output is 5.5A which means just shy of 20W

Barkuti
Barkuti's picture
Offline
Last seen: 32 min 16 sec ago
Joined: 02/19/2014 - 14:46
Posts: 5589
Location: Alhama de Murcia, Spain

rngwn wrote:
… pulling 50w out of a single 18650 …

Is nothing new, common as apples or donuts. Of course, use a cell with enough power delivery/continuous discharge rating, namely if maxing out the driver's output power. A 30Q cell is just shy of this, although an acceptable or 0K choice in responsible hands. In any case, a high discharge cell is a must (Murata VTC5/VTC5A/VTC5D, Samsung 20S/25R/25S, LG HE2/HG2, Sanyo NSX, Molicel P26A/P42A…).

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

Viruses DON'T cause diseases, they rather are a consequence of them. Read the book “Béchamp or Pasteur” by Ethel Hume for more information.

e1000
Offline
Last seen: 2 days 18 hours ago
Joined: 04/07/2018 - 19:57
Posts: 273
Location: LA, CA

This is going to be super unpopular, but you really need to build in extra costs for things like lost packages, returns, failed boards, shipping, etc etc etc, and don’t forget your time as well. Just my take. Still in for 4 at 17mm.

likevvii
Offline
Last seen: 23 hours 13 min ago
Joined: 04/28/2014 - 10:12
Posts: 422
Location: USA, California

In for:
1pcs 17mm
1pcs 20mm

Maybe depending on how much vertical clearance there is in my host, maybe I could swap out default inductor with the largest compatible I can find.

Super excited. I’ve wanted a crazy 1S XHP70.2 since forever!

nzoomed
Offline
Last seen: 4 months 4 days ago
Joined: 08/01/2019 - 03:32
Posts: 120
Location: New Zealand
e1000 wrote:
This is going to be super unpopular, but you really need to build in extra costs for things like lost packages, returns, failed boards, shipping, etc etc etc, and don’t forget your time as well. Just my take. Still in for 4 at 17mm.

Yes I agree, Im still trying to work out the final cost, I have to keep the balance of a fair price and not look like im doing it as a means of making profit from an open source design, but at the same time reimburse myself for labour etc.

nzoomed
Offline
Last seen: 4 months 4 days ago
Joined: 08/01/2019 - 03:32
Posts: 120
Location: New Zealand

likevvii wrote:
In for:
1pcs 17mm
1pcs 20mm

Maybe depending on how much vertical clearance there is in my host, maybe I could swap out default inductor with the largest compatible I can find.

Super excited. I’ve wanted a crazy 1S XHP70.2 since forever!

This is what I intend to build in my convoy with this driver.
Its also a bit tempting for me to make a triple emitter UV light with this driver too.

clientequator
clientequator's picture
Offline
Last seen: 1 week 22 hours ago
Joined: 12/05/2018 - 15:42
Posts: 266

Big thank you to nzoomed for help make this group order! My gxb172 is running for past year and I am happy with it in my flashlight, always surprise to show friends the brightnest! I do not think I place order since I build some drivers before, but I recommend it for people who want to try gxb172. good luck!

Agro
Agro's picture
Online
Last seen: 46 sec ago
Joined: 05/14/2017 - 11:16
Posts: 6936
Location: Ślōnsk

nzoomed wrote:
I have to keep the balance of a fair price and not look like im doing it as a means of making profit from an open source design

There is nothing wrong in profiting from open source designs. Quite the opposite IMHO, when I open source something I want others to take maximum benefit from it. If it’s financial – that’s great.
Even if profit is not what drives you, bending yourself to balance at the edge of loss it is simply counterproductive. Price it fairly without forgetting about yourself and people should be happy.
KnHawke
KnHawke's picture
Offline
Last seen: 5 months 1 day ago
Joined: 08/21/2019 - 21:28
Posts: 117
Location: MI,USA
Agro wrote:
nzoomed wrote:
I have to keep the balance of a fair price and not look like im doing it as a means of making profit from an open source design
There is nothing wrong in profiting from open source designs. Quite the opposite IMHO, when I open source something I want others to take maximum benefit from it. If it’s financial – that’s great. Even if profit is not what drives you, bending yourself to balance at the edge of loss it is simply counterproductive. Price it fairly without forgetting about yourself and people should be happy.

Exactly.
Even though the same 100 units would be marginally cheaper for me to do locally (2600 at my shop), I’d still have to charge about 45 to 50 a unit because of the time and labor/testing involved, even if only to have a personal incentive to keep going.

nzoomed
Offline
Last seen: 4 months 4 days ago
Joined: 08/01/2019 - 03:32
Posts: 120
Location: New Zealand
KnHawke wrote:
Agro wrote:
nzoomed wrote:
I have to keep the balance of a fair price and not look like im doing it as a means of making profit from an open source design
There is nothing wrong in profiting from open source designs. Quite the opposite IMHO, when I open source something I want others to take maximum benefit from it. If it’s financial – that’s great. Even if profit is not what drives you, bending yourself to balance at the edge of loss it is simply counterproductive. Price it fairly without forgetting about yourself and people should be happy.

Exactly.
Even though the same 100 units would be marginally cheaper for me to do locally (2600 at my shop), I’d still have to charge about 45 to 50 a unit because of the time and labor/testing involved, even if only to have a personal incentive to keep going.


Yes, good point. I think we need to feel out what people are prepared to pay.
As it is, some feel $30 is too much, so would like to keep it at $40 or less.
That is on even par with other drivers I see listed on mountain electronics and sandwich shoppe.
KnHawke
KnHawke's picture
Offline
Last seen: 5 months 1 day ago
Joined: 08/21/2019 - 21:28
Posts: 117
Location: MI,USA
nzoomed wrote:
KnHawke wrote:
Exactly. Even though the same 100 units would be marginally cheaper for me to do locally (2600 at my shop), I’d still have to charge about 45 to 50 a unit because of the time and labor/testing involved, even if only to have a personal incentive to keep going.
Yes, good point. I think we need to feel out what people are prepared to pay. As it is, some feel $30 is too much, so would like to keep it at $40 or less. That is on even par with other drivers I see listed on mountain electronics and sandwich shoppe.

MTNElectronics I’m familiar with, Sandwich? Not at all hehe
Looking over what the GXB can do again, 7.24V@6.5A in 6V mode, 14.7V@2.5A in 12V mode.
That right there is what you get for the price of admission. The MTN Electroic booster can only do 6V and 4.2A at best, barely anything to an XHP70.2
While the end result seems marginal, the amount of parts and engineering involved to get that output AND keep the efficiency above 90% is much more significant. Also, these are premium drivers, likely the best of their class and probably will be for a very long time Wink

Too bad ya aren’t in the States, we could have probably talked turkey about getting these built locally so ya don’t have to deal with China, Taxes, Import Duties and who know WTF else. Plus, I would be able to have a personal hand in keeping a close eye on the production process.

Agro
Agro's picture
Online
Last seen: 46 sec ago
Joined: 05/14/2017 - 11:16
Posts: 6936
Location: Ślōnsk

BTW, RMM was able to sell his BST2 drivers which are quite similar for $25. And make a profit. So maybe he chose cheaper components or maybe he has a cheaper manufacturer.

Pages