Electronic Project Kit

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Electronic Project Kit

• Grant Ellington
• North Carolina State University

Biological Agricultural Engineering
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Objectives

• Learn to read and follow an electric schematic
• Identify electronic circuit components
• Function of circuit components
• How to solder correctly
• Promote Science and Technology

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General Instructions

• Refer to Figure 1 for parts layout and parts list
• Refer to Assembly Instructions step 1-3
• Suggested assembly order
• Install resistors first (especially if new to
  soldering)
• Install IC socket (notch down), trimmer resistor
  (P1) and LEDs
• Solder 9V snap plus wire to switch and board
• Solder thermistor to wire pair and board
• Install IC Chip (notch down)

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Temperature Warning Kit
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Top Edge
Front Side
Back Side
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(No Transcript)
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Correct Solder Joints
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Resistor
Provides resistance to impede the flow of
current or electrical charge Limits the
current in desired components of a circuit
22K Ohm
10 Ohm
Variable
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Resistor Value
1st numeric value 2nd numeric value 3rd
multiplier 4th tolerance
1st band
4th band
2nd band
3rd band
Refer to Resistor Color Code (Kit Instructions
Figure 5)
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Resistors Positioned Correctly
R1
R2, R3
R4
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Integrated Circuit (IC)
Multiple circuit components processed or
contained in a single substrate or chip
IC Socket
IC Chip
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LED (Light Emitting Diode)

• Emit light in response to
• small voltage
• Polarity sensitive
• Anode
• Cathode (short leg)

Flat Side (Notch)
Short Leg (-)
(-)
()
Refer to LED Info (Kit Instructions Figure 4)
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On-Off Switches
SPST - Single Pole Single Throw
Push Button Momentary
Toggle
SPDT - Single Pole Double Throw (3-way)
DPDT - Double Pole Double Throw
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Switch and 9V Battery Snap
(red)
- (black)
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Thermistor

• Temperature sensing device
• Resistance changes with
• temperature
• Negative coefficient type
• Limited range

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Thermistor Connection
Heat Shrink Tubing
Solder to board
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Additional Resources

• 4-H Electric Curriculum Project Guides
• Entering Electronics
• Soldering and Troubleshooting Tips on Electric
  Program web page