cubeberg

Christmas PCB

45 posts in this topic

Ok - so I've been slacking on my PCB design for quite a while now.  But - I've been looking to do something for the last couple of years for Christmas.  Ideally - something that my kids could solder (in other words - PTH).  I'd love to use the extra chip that comes with the Launchpad.  

 

Figured I'd start a thread - any ideas?  A christmas tree with LEDs and a prototyping area sounds like a good start!

 

**Edit - added video of final board!**

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Thanks for the suggestions :)  I'll see what I can come up with.  I kind of like this design - http://www.electronics-lab.com/blog/?p=24513 - provides a decent amount of area.  Rudolph would be fun too!  I could always do rounded corners and use silkscreen for the decoration if size became an issue.

bluehash likes this

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Here's a quick test.  The battery is pretty large on a 5x5 board (it's on the back though).  I may drop to the 16 pin DIP so that I have extra room.  Either that or I might put an SMD LED at the top of the tree.  

Hoping to do something with the buttons as well - add bows above so they looks like presents - something like that.

post-1690-0-05575900-1384485875_thumb.png

Fred likes this

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I was going to suggest a tree shaped PCB, but then you'd lose the button presents. As it is looks fine. I did a "learn to SMD solder" thing at a Maker Faire recently and they had boards that took TH or SMD components. SMT LEDs might look better on the tree, so you could design a board that takes either.

 

What about mounting the 430 on the back of the board with the battery?

I think it will look quote good as the trunk.

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What about mounting the 430 on the back of the board with the battery?

I'd have to go SMD to make a difference.  It's certainly a possibility.  

 

I was going to suggest a tree shaped PCB, but then you'd lose the button presents. As it is looks fine. I did a "learn to SMD solder" thing at a Maker Faire recently and they had boards that took TH or SMD components. SMT LEDs might look better on the tree, so you could design a board that takes either.

 

I think it will look quote good as the trunk.

Trunk was the idea :)  Good point on the SMD - dual components would be easy. - I'm thinking about adding an SMD LED for the top of the tree since it doesn't look like it'll work otherwise.  

 

Looks awesome cube! For buttons.. can you do cap touch for buttons?

Didn't even think about Cap Touch!  That's a good idea.  I'll see about that.  Anybody have any eagle libraries with sample cap touch buttons?

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Here's an updated version - added cap touch buttons, 7 leds total.  I also added an extra battery - mostly in case 1 isn't balanced.  I had to move it to the side to allow an LED at the top.  

Thoughts?  I still need to add some pins for a speaker, if desired.

 

I haven't added the combo smd/pth parts yet.  I may just make a full-smd version.

post-1690-0-05129400-1384611068_thumb.png

post-1690-0-34479400-1384611120_thumb.png

post-1690-0-49029600-1384611127_thumb.png

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Looks like @lars extended his hatched ground plane over the entire bottom layer.  His traces from touch pad to pin are not crossing any others - I may try to do that as well to avoid any potential signal noise.  I'll take a look at that tonight - shouldn't be too difficult.

I also noticed that the presents that are supposed to be over the touch pads aren't there - I'll check to see if that's just the oshpark job I'm using.

bluehash likes this

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... Will try to order this tonight. Anyone want to piggypack their designs on an Elecrow order are welcome. I'm shipping DHL

Will ping you once I get home.

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Battery holder (2) - http://www.digikey.com/product-search/en?x=6&y=17〈=en&site=us&KeyWords=BAT-HLD-001-ND

CR2032 (2)

LEDs 3mm (7) - I'd go with something simple like http://www.taydaelectronics.com/leds/round-leds/3mm-leds/led-3mm-green.html and http://www.taydaelectronics.com/leds/round-leds/3mm-leds/led-3mm-red.html and maybe a white LED for the top.

LED Resistors (7) - Depends on the LEDs chosen

Resistor - 47K (1) - reset pull-up

Ceramic Capacitors - 1nF (1), 0.1uF (1)

Electrolytic Capacitor - 10uF (1)

MSP430G2553 (1)

 

That should take care of it!

bluehash likes this

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