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Sources for Supplies

You may have local suppliers who can supply or donate supplies to teach technical classes. Because the supplies often come from different suppliers I have found it best to order as many supplies on line rather than driving all over the area trying to gather them up. (Pricing information as of December, 2007).

Electronic Equipment and Supplies

  • Bulk wire - Local is better but if you have trouble finding a supplier you can order on line from this site.
  • Wire Crimp Connectors -
  • Batteries - You have to pay shipping but their "promotional" batteries are very economical. The promotional batteries will last long enough for a class day but are not designed for long term use. Ordering a small quantity of batteries from them may not be cost effective because of the shipping charges.
  • Batteries - For local suppliers Northern Tools sells their brand of AA batteries in packs for less than $0.20 each. Harbor Freight Tools often marks down their batteries. In December 2007 Harbor Freight was selling four packs of AA Batteries for $0.50 and Single 9V batteries for $0.50.
  • Alligator Clip Leads - Teacher Geek sells bulk packages of 10 or 200 alligator clips leads for less than $0.30 each which is much cheaper than buying them from a retail store like Radio Shack. A local surplus electronic dealer might also have Alligator Clip Leads in this same price range.
  • Small 3V+- Electric Motors - Edmund electronics sells a "bag of motors" that run around $0.50 each. They also sell a "Bag of Plastic Gears" with 20 random gears at a cost of $5 per bag.
  • Switches -   A local surplus electronics store is your first option but All Electronics has reasonably priced electrical switches.
  • Wire - For most projects involving smaller motors and consumer type batteries Cat 5 computer wire is more than adequate. Contact an electrician and see if they will donate some of the end rolls from a computer wiring installation. Generally computer wiring is not spliced so once the wire on the roll is not long enough to pull to a location they may save it for you and donate it. Strip the outer insulation off and then separate the paired wires.