4-H

4-H Meetings 2011/2012 – Electricity project

Oct. 22 – Introductions, conductors, insulators, circuits, short-circuits.

Project – Continuity Tester

Component cost:

• $1.69 – 1.5V Submini Lamp – Radio Shack 272-1139
• $0.50 – 2x Aligator clips – Radio Shack 270-380 (2.99/pack of 12 == .25@)
• $0.47 – plastic AA battery holder – (Thingiverse 13926)
• $0.10 – a bit of solid and stranded hook-up wire

 

Nov. 19 – Introduction to semi-conductors. LEDs, resistors, soldering, printed circuit boards.

Project – LED flasher – to learn soldering

• $2.99 – Adjustable Flashing LED Kit – Velleman MK 102

 

Dec. 17 – Integrated Circuits, capacitors

Project – Flashing Christmas Ornament

• $3.96 – Plastic ornament (Thingiverse item 14713)
• $0.60 – 12 x LED
• $0.16 – 8 x resistor
• 6 x 200 ohm
• 10 K ohm
• 5.6 K ohm
• $0.20 – capacitor (10 nF)
• $0.39 – 9v battery clip
• $0.45 – CD4060BC (IC – Binary Counter)
• $0.25 – Connection wire

 

Feb. 11 -Electro magnetism

Project: Motor

• $0.47 – Battery holder (Thingiverse 18354)
• $0.10 – Magnet
• $0.50 – Magnet wire
• $0.10 – Solid copper wire
• AA battery

 

Apr. 28 – Batteries.

Lemon Battery –

• $0.03 – 3 pennies
• $0.10 (?)- 3 galvanized nails
• $0.10 – connection wire
• $0.05 – LED

 

— future meeting topics / project ideas

– Topics – Resistors, capacitors, transistors, RC timer circults, AC vs. DC

– Project idea: 555 timer based synth – Atari Punk Console

– Project idea: LED blink patterns with microcontroller (Arduino compatible)

Project – LED flasher/chaser.

Voltage, resistance, current. Ohms law.