If time is not an issue, cutting one of these, maybe: http://www.banggood.com/Wholesale-3H-50-Head-Christmas-Lights-Festival-Ligh= ts-Decoration-Lamp-p-53581.html On Fri, Sep 18, 2015 at 10:28 PM, Bob Ammerman wrote: > A string of cheap Christmas lights. Per bulb voltage should be low enough > in > a long string. Cut it up and you don't need separate sockets. > > ~ Bob Ammerman > RAm Systems > > > -----Original Message----- > > From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behal= f > > Of Jason White > > Sent: Friday, September 18, 2015 2:27 PM > > To: Microcontroller discussion list - Public. > > Subject: Re: [EE] Education for tommorrow > > > > (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 28= 9- > > 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 > > wrote: > > > So, I have opportunity to reach about two dozen cub scouts about 6-9 > > > years 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 throw away can be quite painful. > > > > > > > > > So.. Thoughts? > > > > > > -Denny > > > -- > > > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > > View/change your membership options at > > > http://mailman.mit.edu/mailman/listinfo/piclist > > > > > > > > -- > > Jason White > > -- > > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > View/change your membership options at > > http://mailman.mit.edu/mailman/listinfo/piclist > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .