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WarHawk-AVG
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Tom E wrote:

WarHawk-AVG wrote:
Just imagine if we use the ATtiny25 in lieu of the ATtiny13…2K of programming space…imagine what the coders could do if they had that much more room…they do amazing things with 1K! Oh wait…Tom is talking about the whole different MCU…duh

Wut? I’m using a BLF17DD w/ATTiny13A.

I thought you were referring to the Zilog MCU of other builds..sorry
Tom E
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WarHawk-AVG wrote:
Tom E wrote:

WarHawk-AVG wrote:
Just imagine if we use the ATtiny25 in lieu of the ATtiny13...2K of programming space...imagine what the coders could do if they had that much more room...they do amazing things with 1K! Oh wait...Tom is talking about the whole different MCU...duh

Wut? I'm using a BLF17DD w/ATTiny13A.

I thought you were referring to the Zilog MCU of other builds..sorry

Ohh - Dunno what happened to Tivo - no updates - design problem on the board he was gonna look at, so I gave up on that project for now.

TEMdude1
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Hey look at PowerPeg Thermal connectors. They provide the thermal performance of MCPCBs on FR4 substrate.

Below is a link to the website, and also my shared projects.

http://tem-products.com/index.php/powpeg.html/

http://oshpark.com/profiles/TEMdude

Cool products for a brighter future.

www.tem-products.com

Helios-
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I’ve done a board like that. Via under the led’s thermal pad meant to have a small section of copper wire inserted.


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WarHawk-AVG
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TEMdude1 wrote:
Hey look at PowerPeg Thermal connectors. They provide the thermal performance of MCPCBs on FR4 substrate.

Below is a link to the website, and also my shared projects.

http://tem-products.com/index.php/powpeg.html/

http://oshpark.com/profiles/TEMdude


I knew I recognized your NIC from somewhere Smile

P.S. you camping companion PCB any more info??

TEMdude1
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It was a solar powered battery charger, with a small LED flashlight, and a buzzer. The PCB was a spindle to wrap fishing line around.

I couldn’t get enough power from solar panel to charge the battery though, so I deleted the project.

Cool products for a brighter future.

www.tem-products.com

WarHawk-AVG
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TEMdude1 wrote:
It was a solar powered battery charger, with a small LED flashlight, and a buzzer. The PCB was a spindle to wrap fishing line around.

I couldn’t get enough power from solar panel to charge the battery though, so I deleted the project.


Aw man…ever thought of using one of those .9-4vdc~ booster circuits then feeding into a TP4056 charge controller set for 100~mA charge?

Got pics of it? Would really like something like this to tinker with…I built a few joule thief jobbies as well

TEMdude1
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WarHawk-AVG wrote:
TEMdude1 wrote:
It was a solar powered battery charger, with a small LED flashlight, and a buzzer. The PCB was a spindle to wrap fishing line around.

I couldn’t get enough power from solar panel to charge the battery though, so I deleted the project.


Aw man…ever thought of using one of those .9-4vdc~ booster circuits then feeding into a TP4056 charge controller set for 100~mA charge?

Got pics of it? Would really like something like this to tinker with…I built a few joule thief jobbies as well

Booster circuits require power to operate, which would drastically lower the ‘effective’ efficiency of the solar cell. I was going for a charging system which practically pipes power directly from the cell to the battery. However, the project was pretty much a complete failure. Haha. I don’t have pictures.

Pictures of my projects are here:

https://www.flickr.com/photos/102981663@N05/

Cool products for a brighter future.

www.tem-products.com

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I found myself creating a DD Roche F6 driver. I didn’t really intend to, just happened. :~

I’m hoping my board gives clearance for a attiny programing clip. Anyone know what the minimum clearance would be? I don’t actually use those clips myself.

Probably won’t use this DD Roche F6 driver myself. I haven’t got into pure DD myself yet. Also don’t even have an Roche F6 yet. Big Smile


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texaspyro
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Helios- wrote:
I found myself creating a DD Roche F6 driver. I didn’t really intend to, just happened.

I’m hoping my board gives clearance for a attiny programing clip. Anyone know what the minimum clearance would be? I don’t actually use those clips myself.

So what kind of clips do you use? Sounds like you’re sayin’ you want to buy a roach clip… naughty boy… Party

WarHawk-AVG
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Helios- wrote:
I found myself creating a DD Roche F6 driver. I didn’t really intend to, just happened. :~

I’m hoping my board gives clearance for a attiny programing clip. Anyone know what the minimum clearance would be? I don’t actually use those clips myself.

Probably won’t use this DD Roche F6 driver myself. I haven’t got into pure DD myself yet. Also don’t even have an Roche F6 yet. Big Smile


It’s pretty tight…I know the original build of the BLF SRK the R2 was just a smidge closer than R1 and it interfered with getting the clip on
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The 7135 Based SRK Driver V1.1 ?
So v1.1 is ok but v1 was a smidge too close?

Clips, a gentleman doesn’t comment publicly on such things. :hat:


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Helios- wrote:
I found myself creating a DD Roche F6 driver. I didn’t really intend to, just happened. :~

I’m hoping my board gives clearance for a attiny programing clip. Anyone know what the minimum clearance would be? I don’t actually use those clips myself.

Probably won’t use this DD Roche F6 driver myself. I haven’t got into pure DD myself yet. Also don’t even have an Roche F6 yet. Big Smile


Would a switch like this work on your build?
http://www.digikey.com/product-detail/en/GP11MSV1BE/CKN9059TR-ND/1014127

have you found the verticle surface mount switch for your build?
nope…you need a SMD tactile switch (preferably with gull mount for strenght)
Like this
http://www.digikey.com/product-detail/en/TL4100AF240QG/EG4964CT-ND/2685042

Never mind comfy already found the parts
http://www.digikey.com/product-detail/en/TL3330AF260QG/EG4389CT-ND/1426859
http://budgetlightforum.com/node/29562?page=20#comment-570406

WarHawk-AVG
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Yes… V1.1 added retaining tabs and moved the resistor over

WarHawk-AVG
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What is the digikey part # for the Zener diode on the 20 mm Zener Mod Linear Led driver

SOD-323??

http://oshpark.com/shared_projects/H7WGuYpM

This?
http://www.digikey.com/product-detail/en/BAT43WS-7-F/BAT43WS-FDITR-ND/717698

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WarHawk wrote:
have you found the verticle surface mount switch for your build?
nope…you need a SMD tactile switch (preferably with gull mount for strenght)

I currently have a pads for a Alps SKSC Series switch on my board. Mouser SKSCLAE010 But I don’t want to force people to make a mouser or digikey order just to build my board. H) Shipping is expensive for people not in the usa. I’ve added extra vias to accommodate common switches from ebay. Something like this Tactile Switch, 2 Pins, 3*6*5mm


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WarHawk-AVG
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More versatile that way Wink

wight
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Helios- wrote:
I currently have a pads for a Alps SKSC Series switch on my board. Mouser SKSCLAE010 But I don’t want to force people to make a mouser or digikey order just to build my board. Grade Shipping is expensive for people not in the usa. I’ve added extra vias to accommodate common switches from ebay. Something like this Tactile Switch, 2 Pins, 3*6*5mm
Would they just bend the pins to get the right-angle mounting?

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

Mattaus
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WarHawk-AVG wrote:
Helios- wrote:
WarHawk wrote:
have you found the verticle surface mount switch for your build? nope...you need a SMD tactile switch (preferably with gull mount for strenght)
I currently have a pads for a "Alps SKSC Series":http://www.alps.com/products/WebObjects/catalog.woa/E/HTML/Tact/SurfaceM... switch on my board. "Mouser SKSCLAE010":http://www.mouser.com/ProductDetail/ALPS/SKSCLAE010/?qs=sGAEpiMZZMsgGjVA... But I don't want to force people to make a mouser or digikey order just to build my board. H) Shipping is expensive for people not in the usa. I've added extra vias to accommodate common switches from ebay. Something like this "Tactile Switch, 2 Pins, 3*6*5mm":http://www.ebay.com/itm/20x-Tactile-Pushbutton-Key-Switch-Momentary-Tact... More versatile that way ;)

That switch looks VERY interesting. Nice tight package for hosts that do not have a lot of wiggle room. Nice find. I might need some to go with the eleventy-seven-billion tactile switches MRsDNF just sent me lol.

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There are a few right angle switches which are smaller.
I just picked that one because it provides versions with different operating force while still one of the least expensive.


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wight
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Good thinking, that’s a nice option for us picky budget folks.

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

scottyhazzard
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I can’t find my link to Matt’s Smart Switch, I guess I lost or deleted my subscription to it. Any updates there?

I have a question for Comfychair, how do you mount your little electronic switch in the tail of a light?

"Those who hammer their guns into plows will plow for those who do not."

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Can someone more experienced with the BLF17DD help me, please?

I'm pulling my gray hair out trying to figure out why low voltage mon. is way off on the BLF17DD board I built up. When the cell falls below maybe 4.10v, the firmware starts cranking down output, using the 130 and 120 values as JC uses. So it thinks the battery is much lower than it really is -- pretty much useless. I've double/triple checked the circuit and it match's a Nanjg driver perfectly (diode configured in correct position, R1 and R2 are all good, etc.).

This is a straight FET build, not a zener mod build, just one battery - it's in a Convoy L4 host. This is my 3rd BLF17DD build (pre v2.0 ), and first time I noticed this, though I didn't do much at all in low voltage monitoring testing on the others.

Should this work ok? Maybe a bad chip or something?

DB Custom
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I’ve got more than a dozen of em running and haven’t encountered that. I don’t tend to run cells down so far as to have the driver shut it down, but I’ve had em down to 3.8V or a bit less with no issues.

Edit: Could one of the voltage monitor resistors have bridged, causing a mis-read? (I’d suspect the 1920)

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Thanks Dale - I've been buzzing out everything, just can't find a problem. According to checking against the Nanjg, it all looks perfect. Hhmm - gotta double check the resistor values.... Maybe I screwed up, or ordered the wrong size... I'll check now. thanks!! Sometimes I look for the hard things, and it's the obvious things I miss Smile.

wight
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I haven’t built a BLF17DD. You should be able to measure those resistors in-circuit to determine whether they are out of spec due to damage or being faulty. That seems like the most likely culprit to me. I guess too much vdrop over the diode could also be an issue. Diode test on your DMM should show ~0.25 on that. I know you can measure that in circuit on a Nanjg 105c, not sure about the BLF17DD.

I just woke up so my math is broken, but I’m almost 100% positive that the ATTiny’s VREF tolerance (+/-10%) cannot account for this problem.

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

wight
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To build the 20mm ‘Zener Mod’ Linear LED Driver as a regular single cell 7135 based driver, all I need to do is jumper R3 and leave D1 unpopulated… right?

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

DB Custom
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Think so wight, but you’ll probably want better confirmation than mine before you proceed.

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wight wrote:
To build the 20mm ‘Zener Mod’ Linear LED Driver as a regular single cell 7135 based driver, all I need to do is jumper R3 and leave D1 unpopulated… right?

Are you planning on using a regular nanjg protection diode on this? If not then yes just jumper R3 but you could use a regular diode over R3 for polarity protection if you wanted.

 RIP  SPC Joey Riley, KIA 11/24/14. Now I am become death, the destroyer of worlds.

wight
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Oh yeah, thanks Cereal_killer. I forgot about reverse polarity protection.

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

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