(I did my Eagle Scout project two years ago teaching robotics to
High/Middle Schoolers)

Digikey has a section for incandescent and neon bulbs.

1.4V rated 5mm Incandescent Bulb. $0.46 each at quantity of 25. (If
possible have extras for when the loose them or break the leads)
Digikey part 289-1230-ND (
http://www.digikey.com/product-detail/en/1728/289-1230-ND/1552785 )

Bonus: Same form factor as standard 5mm LEDs. I'd think you can safely
use these with standard 1.5V cells.
Con: still costs $11 bucks for 25 bulbs plus ~$5 shipping (US)


On Fri, Sep 18, 2015 at 2:00 PM, Denny Esterline <desterline@gmail.com> wro=
te:
> So, I have opportunity to reach about two dozen cub scouts about 6-9 year=
s
> old. I'm looking to start them with very basic electricity (battery, bulb=
,
> wire) and move them on to some more advanced stuff.
>
> There's a vague thought in the back of my mind about documenting the
> process and turning it into something publishable (blog post, hardcover
> book or something in between, TBD)
>
> So, I'm soliciting suggestions for two things, projects and sources.
>
> I'm thinking start with a pair of penlight cells and an incandescent bulb=
..
> I do think as a beginning a bulb is better than an LED for a few reasons,
> but moving to LEDs should follow fairly quickly.
>
> Trouble is, I was immediately stymied by the cost of incandescent bulbs.
> Over $5 US each at the local hardware store had me running for the door.
> Even Ebay seems to be around $1/bulb. (I plan to explore Christmas bulbs
> this weekend) So, clearly, sourcing things for what is essentially a thro=
w
> away can be quite painful.
>
>
> So.. Thoughts?
>
> -Denny
> --
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--=20
Jason White
--=20
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