17mm & 20/26/27mm single-sided DD/FET driver release: A17DD-SO8 / A20DD-SO8 / etc

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pilotdog68
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seben
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Reading the datasheet, vF is about double the vF of the NSR0320. On the other hand its half the price.
Looks appropriate to me.

Sorry for highjacking this thread:
I’m currently fighting one(now 3 of these drivers) to get them running at >4V input.
Maybe some of you can take a look? http://budgetlightforum.com/node/37820

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is 0.58v at 1amp an acceptable rating for D1?

My Favorite Modded Lights: X6R, S8 , X2R , M6, SP03

Major Projects:  Illuminated Tailcap, TripleDown/TripleStack Driver

Rufusbduck
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The diode doesn’t pass that much current to the mcu.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

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Rufusbduck wrote:
The diode doesn’t pass that much current to the mcu.

I know, but that’s the only Vf level that the mouser specs list.

My Favorite Modded Lights: X6R, S8 , X2R , M6, SP03

Major Projects:  Illuminated Tailcap, TripleDown/TripleStack Driver

Rufusbduck
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It does seem on the high side. What’s it for? Many of the drivers listed in the Oshpark thread have carts listed or share similar parts lists.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

pilotdog68
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It matches the Vf of a diode that wight recommended but at 1/3 the cost. It sounds high, but it’s in the lower Vf range of the diodes mouser has for sale.

My Favorite Modded Lights: X6R, S8 , X2R , M6, SP03

Major Projects:  Illuminated Tailcap, TripleDown/TripleStack Driver

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With 3.67V on the driver input (while running) I measured 3.51V at the FET gate full on.  At 2.99V I measured 2.833V.  This is with the "ultra low vF" diode.  It was pretty consistent at around 0.16V difference from input voltage to gate voltage.  I need to swap in one of the cheap S4 diodes from the 105Cs and see what kind of drop I get from that.  

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Hi, these days I tried to study about A17DD-SO8. I find single side design a great feauture. I have some questions though.
How much is cost of this board, compared with classic 17mm fet blf fet driver? Except it’s single side design, does this board have advantages compared with blf fet?

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finges
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zeremefico wrote:
Except it’s single side design, does this board have advantages compared with blf fet?

it is zener ready
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zeremefico wrote:
Hi, these days I tried to study about A17DD-SO8. I find single side design a great feauture. I have some questions though. How much is cost of this board, compared with classic 17mm fet blf fet driver? Except it's single side design, does this board have advantages compared with blf fet?

The cost is pretty much equivalent. It is easier to build and fits in more lights.  The performance is equivalent. 

Finges: there was already a specific zener mod FET driver.  You could also easily modify the earlier revisions as well (but not the v1.0 versions without some modification).

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I don’t do Windows. I was looking at cheap Windows laptops to program drivers and wondering what are the minimum requirements to program these and other boards. If you guys could suggest what is needed that would be a big help, thanks.

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

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scottyhazzard wrote:
I don’t do Windows. I was looking at cheap Windows laptops to program drivers and wondering what are the minimum requirements to program these and other boards. If you guys could suggest what is needed that would be a big help, thanks.

It wouldn’t take much at all, a $50 (used) netbook could probably manage it. They are very simple programs. Most of the tutorials are for windows, but a few people here do it in linux as well. That could be a cheaper option.

My Favorite Modded Lights: X6R, S8 , X2R , M6, SP03

Major Projects:  Illuminated Tailcap, TripleDown/TripleStack Driver

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Any Windows laptop from the past ten years will do everything you need to program these drivers. 

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scottyhazzard wrote:
I don’t do Windows. I was looking at cheap Windows laptops to program drivers and wondering what are the minimum requirements to program these and other boards.

I don’t do Windows either. You can flash stuff from Linux if you like, and I have instructions available for setting it up in Ubuntu. You should be able to run it on pretty much any computer with USB, though on older ones you may need a lightweight version like Xubuntu.
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I wonder if it would work in WINE in Linux?

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AVRStudio might work in WINE, but why would you want to?

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true

Because you don’t need it Wink
http://www.atmel.com/tools/atmelavrtoolchainforlinux.aspx
http://www.ladyada.net/learn/avr/setup-unix.html

would probably work on a Raspberry Pi…just take a while to compile

My buddy compiled some software for his ham radio for a relay…said it took over 6 hours!!!

Thank God for screen Smile

P.S. I like using checkinstall instead of make install…it creates a binary for later installation

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I Recently was unable to get a v44 with Zener to work. RMM saved my day with the suggestion to place the input cap directly on the Zener pads.

Wight. If you find the time it would be great to have another layout with additional 0805 pads by the Zener. Right where the v44 silkscreen is now?

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WarHawk-AVG wrote:
P.S. I like using checkinstall instead of make install…it creates a binary for later installation

Checkinstall is nice if you need to build unpackaged stuff from upstream… but in this case, it’s much easier to just install the existing packages: sudo apt-get install gcc-avr avr-libc binutils-avr avrdude avrdude-doc

Those are all the necessary tools.

Then, to build and flash most attiny13a-based firmware from inside my repo, it’s just “cd person/project ; ../../bin/build.sh foo ; ../../bin/flash.sh foo.hex”.

And, of course, use whatever you like to edit the sources and manage files.

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Thanks guys. I don’t know Linux but I used to know windows. Probably go with the evil I know.

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

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Oh, do you normally use a Mac? If so, this might help:

http://www.ladyada.net/learn/avr/setup-mac.html

Or maybe this:

http://www.meoworkshop.org/how-to-avr-with-osx/

Afterward, you should be able to use everything in my firmware repo, including the build and flash scripts, with no need to muck with Windows or AVRStudio. This stuff is all designed to run on unix systems, so it’s basically native on Linux and OSX but it’s a little awkward on Windows.

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Can it be used 1mf 16v instead of 25v cause i have like zounds lying arround in the office?

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Mitko wrote:
Can it be used 1mf 16v instead of 25v cause i have like zounds lying arround in the office?

Yes

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seepeli
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I have a problem with the Offtime memory. The driver change the mode with first clic even though I cut off the power for a few minutes.
I changed already OTC capacitor, just to be sure it is right value.
Other features seem to be working correctly.
I am using layoyt v0.24 and flashed with star offtime v1.2.

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seepeli, can you take a pic and show us your driver? Makes it a bit easier to figure out what’s going on…

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I’ll take a picture when I get home.

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Sounds more like a bad/dead capacitor, Do you have a DMM with capacitance option , measure the capacitance individually.

If not, remove both capacitors, put fresh ones, preferably from a different batch.

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has anyone been able to use any version of wight’s boards with a zener mod as was intended with the design layout? or has everyone had to stack c1 and the zener diode together? does only RMM/MTN’s board work with a zener layout as intended?

seepeli
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I measured both the capacitors capacitances and they were OK. I installed capacitors back and I got OFFTIME memory to work. I may have originally installed the capacitors the wrong way?
In any case, the driver works, so thanks to all!

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