Diy led meet?

[der_wille_zur_macht]

I don't mean to be clogging everything up getting help, but I'm going to ask another question about components. I have the driver components in my cart at Mouser. I'm in the process of adding the Typhon components. There are a few things I'm not sure about though.

Lines 4-6 and 19 are about pin headers. They are supposed to be our choice, but I have no idea what to order. I looked at some on Mouser, but got thoroughly confused.
5 M04PTH JP4, JP5, JP6, JP7, JP8 Pin headers of your choice
2 M02PTH JP11, JP12 Pin headers of your choice
1 M06SIP FTDI1 Pin headers of your choice
1 M16PTH JP1 Pin headers of your choice

Also, does Mouser have the ATMEGA328P Arduino-bootloaded Chip?

Last question... I think.... I'm guessing we have to have a power supply for the Typhon, but I don't see that listed on the parts list.

I buy pin headers in bulk from hobby sources, i.e. sparkfun, modern device, etc. You can probably find them at Mouser but it's gonna be a challenge to navigate the search feature (I've tried) - they have thousands of pin headers and the differences are not obvious. Don't worry too much about the pin headers, I've got bags of extras. But if you do order from a hobby vendor and want to get some, you'll need a stick of standard male and female, plus a stick of 2-row 90 degree male and a stick of one-row 90 degree male.

The ATMega needs to be bootloaded. I thought at one point that Mouser started selling it but I can't find it now. Moderndevice and sparkfun have it, and you can get them on eBay if you search "ATmega328P-PU Arduino"

The power supply - there really are few requirements. It needs maybe 300mA but more is fine. To have a fully operational Typhon with 5v and 10v output you need at least 10.5v input - most people use 12v wall warts since they are so common. If you are only using 5v output (which will be the case with the DIY drivers) you can actually leave out the 10v regulator on the board, bridge it's input and output, and use a DC supply down to about 6.5v.

Ideally you don't want your power supply WAY higher than the required voltage, otherwise it's just gonna heat things up. I have my "production" Typhon on my big tank running on 21v input and it gets really hot.

 

[redmanx9]

So is there a solidified time, date and place? Is there any openings?

 

[der_wille_zur_macht]

You guys thinking about the LM3409. I posted a bunch of "suggested" BOMs in the driver thread:

http://reefcentral.com/forums/showthread.php?t=1759758&page=91

If your desired parameters match one of the carts I posted, in theory you can just buy and check out - but ask any questions first if you feel you need clarification.

 

[dieseldaisy]

I'm interested in attending however I am in Syracuse so I need a heads up of time and location as soon as possible

 

[NirvanaFan]

March 3rd, somewhere in/near Rochester. I don't think a time has been scheduled yet.

 

[NirvanaFan]

Is this the correct chip? Is it the Dieciimila or Optiboot that we want?

moderndevice.com/products/arduino-programmed-atmega328-chips

 

[der_wille_zur_macht]

In this application it doesn't really matter. Optiboot has a smaller footprint on the chip so you have more memory, but the Typhon sketch is not very big so it doesn't matter.

If you think you'd ever recycle the chip for other Arduino purposes you might want the optiboot.

 

[davidpesce]

You guys thinking about the LM3409. I posted a bunch of "suggested" BOMs in the driver thread:

http://reefcentral.com/forums/showthread.php?t=1759758&page=91

If your desired parameters match one of the carts I posted, in theory you can just buy and check out - but ask any questions first if you feel you need clarification.

Nate - you da man! This was extremely helpful! Thank you!!

 

[jfl14609]

hey guys and gals it seems as if people arent reading the whole thread so I figured I would repost details here are defibate people. please pm me as we only have room for 10 people.
date march 3
time 1 pm
Jeff
Dave
Joe
Nate
hilton57c
Krypt1979
Mike Filly

 

[der_wille_zur_macht]

If we run out of space, and/or there are people from Syracuse that want to learn about LEDs, we can do another session here in 'cuse some other time. It might even be beneficial for some of the people coming to this meet to get together again in a few months to compare notes or ask questions once you've had some more exposure.

 

[jfl14609]

i would be into that

 

[stephen77]

I would like to join in. But i can't make this one . maybe next time.:crazy1:

 

[davidpesce]

Not sure I want my address posted for the world to see. Shoot me a pm and I'll let you know where I live for Saturdays meet.

 

[jfl14609]

Hey Guys I have talked to a few of you already. My uncle passed away over the weekend and services will be Sat so I doubt i will be able to make it to the meeting is anyone going out my way? I am in clarkson hilton area. I have a table and some chairs that need to get that way.

 

[der_wille_zur_macht]

Jeff, do you want to reschedule the meet?

 

[jfl14609]

no way man everyone has done alott to get it going. I will hopefully get the video and maybe head to syracuse if you do one. I would never hold up knowledge lol

 

[NirvanaFan]

So, who for sure is going to this besides Der_Wille, DavidPesce, and me?

 

[NirvanaFan]

Also, Nate, do you have an idea of what will be talked about?

I was thinking
Design - How many LEDs. Differences in Bins. Differences in models (XM-L, XP-G, etc). Ratio of white to blue, all cool white or throwing some neutral white or warm white. how to choose drivers. Optics and height from water level. Mentioning parallel strings here and how to protect them with fuses?
How to assemble - How to tin the LEDs, attach them to a heatsink (thermal epoxy vs drill and tap), and wire them up.
Adding dimmers - manual potentiometer, controller, how to wire them up.
Testing - How to test for shorts, adjusting the internal pot on the driver. What to do before you actually plug them in and cross your fingers.
Common problems and solutions - Not all LEDs lighting up, flickering, etc. Those are the two that seem to come up most in the DIY forum right?

That should cover the basics of most people, and I think what most of the people would want to come to the meet for. I'm guessing that will take a couple hours? Maybe after that, we could get into the DIY drivers and DIY controller. We don't have to go through soldering every component on the board, but a quick layout would be good. Maybe a demonstration on how to program the Typhon?

What does everyone want to see and learn?

 

[jfl14609]

according to the list I have looks like krypt

 

[der_wille_zur_macht]

Joe, that's pretty much what I was thinking. I wasn't going to prepare any sort of formal presentation but since we'll have a PC there I'm expecting I'll be pulling up datasheets, etc. to support the conversation.

As I said before, I'll bring some random scrap LEDs I have to demonstrate soldering and stuff, but I don't really have enough stuff (or the right stuff) to do a "realistic" from-scratch build like you guys might on a tank, so if anyone has stuff they want to bring that would be a big help. Especially, if you guys are thinking about ELN drivers, it would be nice to have someone bring one or two. All I have laying around are DIY drivers.

So basically, have two segments - theory, and then hands on. Then, yeah, we can get in to the DIY drivers and Typhon near the end in an "advanced" segment.

I'm pretty much free for the whole day so length is not a huge deal to me, but yeah, I'd expect a few hours.

And again, I'm totally available and open to share whatever you all think would be the most effective for wherever you're all at, so lemme know if anyone has ideas or other things they want to talk about.