[pcolbeck]

Hi

I have all my parts now to make a CMOY and it looks like I will be able to fit it in an Altoids tin with two 9V batteries. Do the batteries want connecting in series or parallel ?

Also does anyone have any suggestions for mounting a LED without a LED holder as I forgot to order one. I cant face the post and packaging costs of ording just a LED holder it would just be too absurd.

Thanks

Pat

 

[usc goose]

It's been a while since e&m but i think series so you can get the 18v or whatever the sum of the voltages will be.

 

[jasonhanjk]

Or would you consider skipping the ed portion???

 

[stereth]

Batteries in series for more headroom (less clipping), or in parallel for longer life. I'd put them in series because you get better performance and you'll drain the batteries down farther. It should also draw less current when provided with more voltage.

As for the LED, in my projects I just cut a hole in the enclosure and glue the LED directly in. It let me put the LED on the corner of the tin, which would have never accomodated a LED holder.

 

[spott]

what glue did you use? i used model glue for plastic models but it fell out (my case is medal), i've got a REALLY small (3mm) LED so those really thick glues would be difficult to work with

thanks

 

[stereth]

For metal to plastic, nothing beats superglue. I don't have access to many tools, so I ended up piercing a hole in the tin instead of punching it. Fortunately, this meant that I had a nice mounting surface. I just inserted the LED most of the way, put a drop of superglue on it, mixed it around and pushed the LED in.

Now if someone could tell me how to glue rubber to metal...

 

[[so]hai(R)]

how about heat glue gun?

 

[Vdubjunkie]

Quote:

Originally posted by stereth Now if someone could tell me how to glue rubber to metal...

As mentioned by [so]hai, hot glue is always good. Plus it can be removed if you want to undo which is not as easy with superglue. I'm also told that JB Weld is good for almost everything. Probably though a bit like superglue in the undo category.

 

[tommyatkins]

JB Weld is awesome! It's not any of that instant set epoxy, so it's fairly easy to work with, and sets stronger.

TA

 

[pcolbeck]

Thanks guys

I am working out a layout that will work with my stripboard and should get started tonight or tommorow. I'll ley you know how it goes.

Pat