Oshpark Projects

Flashlight Modding and DIY Parts
1679

Don’t you consider soldering a 0805 cap on the 0603 pads?, I don´t know how difficult it is, but it fits (like in the right diagram)

Do you prefer the 0805 option?, if so it could be done performing both of your suggestion, i see some potential clearance problems but i think they could be solved.

1680

Yet another untested monstrosity… This implements what is intended to be a snubber for 1s applications, plus a bleeder for pilotdog68’s tailcap LED system, plus an OTC pulldown, plus a gate pulldown, plus a 3mm via for the BAT+ wire. There was no space for a BAT+ pad on top, so it’s bypass or go home. At first I thought that I was going to be forced to increase my normal 1mm physical keepout, but somehow I got away with it.

1681

This version has been replaced by v007: Oshpark Projects - #1686 by Pablo_E

This board is really dense populated! you made a great job!

I have already changed OTC pads size to 0805, i have had to remove some vias, and voltage resistors may not be easy accesible, placed that way between tall components, but i think it is done.

https://oshpark.com/shared_projects/0NAo2EmQ

1682

Thanks. :slight_smile:

Your board is clearly improving, but here are a few things (in no particular order):

  • Your silk lines are way too thin to be produced as specified. OSH Park or the fab will automatically thicken them for you, but I prefer to thicken them myself (for full control). The worst offender is the marking “PDR” - I suspect that this may not be legible after thickening. I don’t remember how thin OSH Park goes and I can’t find it on the specs page right now: OSH Park Docs ~ Services ~ 2 Layer Prototype Service Maybe someone else can help. Maybe I normally use approximately 6mil minimum? I’m not certain at the moment.
  • I still don’t think that the board is setup well for a Zener mod. If you’re still not clear on the Zener circuit maybe someone will throw up a quick diagram at some point. Clearly Zener compatibility is not required - it’s just something to think about.
  • R2 looks suspiciously close to the MCU for a stock programming clip to fit. R1 is definitely OK, the clip doesn’t extend into that area.
  • Version numbering seemed to stop at v5 where the the driver’s “H1” designation just started getting extra letters added to it? I suppose that’s related to the bypass hole.
1683

Thank you too! it is improving thanks to all of your help.

I going to reply in the same order:

  • I didn’t know, i’ve took a look at a v003 I ordered to see how things were goin, and yes, silkscreen lines are thickened, but there is no small markings to check legibility :-/
  • Darn! i thought i got it, thanks for pointing it out.
    Sure it is not a mandatary, i will see what i can do, but if it is not done like i thought, i am affraid it wont be possible.
  • Well, my clip is not wider than MCU, but now i see the other clip version on google, seems that it could suffer this problem.

  • Yes, it is related to the bypass hole and the bigger cap.
    I have no clear how to mark them, as a new version or as a different branches.
    I dont want people to think newer boards are better, when they are only different, but i am not happy neither with the extra letters, i think i am going to back to numbers as it keep things simpler.
1684

where did you get your clip Pablo?

1685

Is a chinese no branded one you can find on ebay, aliexpress and many other sites.

I got it from this seller: Henny Liu’s store , but i don’t recommend him/her as i got different clip from which is shown on advert images, so random version could be sent.

Here is a pic of the clip i have:

1686

After a long exams season, i have found some time to work with eagle.

I have tweaked my two last designs, so people who want to stay with 0603 OTC could use v006.

Changes are:

- silk lines are now thicker

- R2 is not next to MCU legs

- versioning is again with numbers only.

  • on v007 bypass hole is 2.2mm / 0.0866inch

I hope they are close to final design :smiley:

v006
https://oshpark.com/shared_projects/k6r3GbdV

v007
https://oshpark.com/shared_projects/z3TrmkmR

1687

The D01 contact board fell of the list and I have sold all of my spares… May be some small demand for it…

Courui D01 Contact Board V3

1688

I need some help. So far everything I’ve done has had a perfectly circular milling layer. How do I do other shapes accurately? Like an SRK driver with the tabs, or a tailboard in the SRK “flower” shape or for a ZY-T08?

1689

Hey… I am really stuck on the same issue!

1690

Draw your basic outline, then use the split, miter, and meander tools.

1691

Easy for you to say Richard! But this comes from a guy that build a D01 contact board and could not make a basic FET driver fit on board… I really suck at that program.

1692

I’ve never touched any of those tools… I’ll have to play around with them and see what happens.

Thanks for the tip. Now that you know somewhat of the extent of my inexperience, feel free to keep the tips coming :slight_smile:

1693

For tabs I make them first and use arc to get the rest of the circle.

1694

I just draw wires on the milling layer. If I need part of a circle I draw a full circle in the reference layer, than draw an arc in the milling layer and trace the part of the full circle in the reference layer that I want. I’ve never used the commands RMM suggests, I’ll have a look at them next time I need to do something like that.

1695

A few more options, all basic BLF designs, but with added stability components. Part lists are on the various OSH-Park project pages:

DEL’s boards

—
DDm17 rev03 - Built and tested.

—
DDm17 rev04 - Ordered, but still en-route.
Rev04 is a slight modification on rev03 to get more clearance for the programming clip.

—
DDm20 rev00 - Just ordered.

—
DDmY3 rev00 - Ordered, but still en-route.
For the Yezl Y3 (1S).

—
DDmM6/SRK rev01 - Built and tested.

—
DDmM6/SRK rev02 - No plans to order.
This one gives the option of one to eight 7135 chips for the regulated channel.

—
1400m rev00 - Built and tested.
This one is a favorite of mine for Convoy S-series lights! It is what I use in my EDC S3. Two regulated channels, based on Harlequin’s HQ4D board. Note: Only good for 1.4 A.

1696

Thanks DEL. The latest items I’ve ordered and just received thanks to this thread is the 15mm 7135 driver boards and the boards for momentary switches. Hopefully I can get a driver to work. :person_facepalming:

1697

I got a bunch in already, and a bunch more due in this week, including the Y3's! Thanks DEL!!

1698

Wow. What a mission. Well for me it is anyway. I have just happily, after many failures over along period of time, managed to build my first working driver. Its the 15mm SK68 driver by WarHawk here.
I used an old 7135 driver for parts that never worked, flashed the MCU with TK’s Biscotti and we had light. To everyone involved, a big thanks. Yes there were lots of you here that has helped me over an extended period of time from soldering, flashing and answering many questions. YAA HOO.