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Resistance and Ohms Law.

I promised just a little math, unfortunately you do need some, and the most important math to our projects is included here.

I will also put some links below so you can order parts for our first couple of labs.

No I do not work for allelectronics.com, I just use them for myself because they are not that expensive. Feel free to purchase from your favorite place.

Also feel free to buy more of the each of the parts, I am only including enough for the first couple of labs, plus a few extras in case you burn out a part

10 - 470 ohm 1/4 watt resistors
allelectronics.com/make-a-store/item/291-470/470-OHM-1/4-WATT/1.html

5 - 22K OHM 1/4 WATT
allelectronics.com/make-a-store/item/291-22K/22K-OHM-1/4-WATT/1.html

5 - 100K OHM 1/4 WATT
allelectronics.com/make-a-store/item/291-100K/100K-OHM-1/4-WATT/1.html

2 - 100K MULTI-TURN TRIMMER POT
allelectronics.com/make-a-store/item/MTP-100K/100K-MULTI-TURN-TRIMMER-POT/1.html

2 - 1K OHM 1/4 WATT
allelectronics.com/make-a-store/item/291-1K/1K-OHM-1/4-WATT/1.html

2 - 220K OHM 1/4 WATT
allelectronics.com/make-a-store/item/291-220K/220K-OHM-1/4-WATT/1.html

2 - 100K SINGLE TURN TRIMPOT
allelectronics.com/make-a-store/item/TPS-100K/100K-SINGLE-TURN-TRIMPOT/1.html

2 - RECTIFIER DIODE 1AMP/1000PIV
allelectronics.com/index.php?page=search&search_query=1n4007&x=0&y=0

2 - 10uf Electrolytic capacitors
allelectronics.com/make-a-store/item/10-50RS/10-UF-50-VOLT-RADIAL-ELECTROLYTIC-SPECIAL/1.html

2 - 1000uf Electrolytic capacitors
allelectronics.com/make-a-store/item/1000R100/1000UF-100V-ELECTROLYTIC-CAPACITOR-RADIAL/1.html

2 - 9 VOLT BATTERY SNAP, 3" LEADS
allelectronics.com/make-a-store/item/BST-3/9-VOLT-BATTERY-SNAP-3-LEADS//1.html

10 - LEDs any color - I just linked green below, and this is super bright, you get get something less expensive, and it will work just fine.
allelectronics.com/make-a-store/item/LED-128/SPECIAL-ULTRABRIGHT-GREEN-LED/1.html

2 - 9 Volt Batteries
allelectronics.com/make-a-store/item/PRC-1604/9-VOLT-DURACELL-PROCELL//1.html

2 - Pushbuttons
allelectronics.com/make-a-store/item/PB-126/SUB-MINI-PC-MOUNT-PUSHBUTTON//1.html

5 - NPN transistors
allelectronics.com/make-a-store/item/MPSA06-HM/MPSA06-NPN-TRANSISTOR-HOUSE-MARKED/1.html

5 - PNP transistors
allelectronics.com/make-a-store/item/MPSA56-HM/MPSA56-PNP-TRANSISTOR-HOUSE-MARKED/1.html

2 - 3-18 VDC PIEZO BUZZER
allelectronics.com/make-a-store/item/SBZ-204/3-18-VDC-PIEZO-BUZZER/1.html

3 - 3-20 VDC MOTOR
allelectronics.com/make-a-store/item/DCM-330/3-20-VDC-MOTOR-MABUCHI/1.html

1 - SOLDERLESS BREADBOARD
allelectronics.com/make-a-store/item/PB-400/SOLDERLESS-BREADBOARD-400-CONTACTS//1.html

1 pack Alligator Test Leads -10pc
makershed.com/ProductDetails.asp?ProductCode=MKEL16

1 Pack Deluxe Breadboard Jumper Wires
makershed.com/ProductDetails.asp?ProductCode=MKSEEED3

3 1/2 DIGIT LCD MULTIMETER
allelectronics.com/make-a-store/item/DMM-6162/3-1/2-DIGIT-LCD-MULTIMETER-W/BACKLIGHT/1.html

Photo Cell or LDR
sparkfun.com/products/9088

That should do it for now. When I purchase either the amount I recommended, or the minimum I could purchase if it was more, my cart came to $50.00 US not including shipping, or the wires from maker shed, or the Multimeter.

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