La ACES Student Ballooning Course
Electronics Unit
Activity E3b. Reconciling a Schematic with a Layout Diagram
Students will learn how to relate the circuit symbols on a schematic diagram to actual physical components. They will determine how the components are to be assembled on an etched circuit board.
Each student should have the following materials, equipment, and supplies: (
* indicates materials supplied as part of LaACES kit)
1. SkeeterSat parts kit *
2. Printed copy of SkeeterSat schematic diagram
(< skeetersat_sch.pdf
> on LaACES CD-ROM
*
)
3. Printed copy of SkeeterSat layout diagram
(< skeetersat_pcb.pdf
> on LaACES CD-ROM
*
)
4. Printed copy of SkeeterSat bill of materials
(< skeetersat_parts.pdf
> on LaACES CD-ROM
*
)
4. Small hand magnifier (optional but useful for reading labels on small parts)
The laboratory should also be equipped with the following:
1.
Flat work tables sufficient to seat all students with plenty of work space
1. Use the parts list as a reference. From a previous activity you have already identified each part by type and value.
2. Find among the supplied kit of parts each part listed on the parts list. Do not remove components from static protective foam at this time.
3. Use a highlighter and mark off each part on the parts list, then highlight its location of the schematic diagram
4. Place each part in its designated location on the printed layout diagram. Fasten it with a bit of sticky tape if you wish. If you wish to save this drawing with all the parts attached, it will speed assembly of the SkeeterSat in the next session. Take care to notice those parts that have a specific required orientation (transistors, diodes, integrated circuits, polarized capacitors, etc)
5. When you are satisfied you have accounted for every part, store them away carefully in preparation for next session's assembly activity.
LSU v06/04/2007 Electronics Unit - Activity 3 1 of 2

La ACES Student Ballooning Course
Electronics Unit
Activity E3b. Reconciling a Schematic with a Layout Diagram
Students should have verified that all parts needed for their SkeeterSat are present in the kit and will have identified the correct location of each on the circuit board.
Emphasize careful handling of parts that may be subject to ESD damage. These are supplied in the kit on conductive foam. Leave them on the foam until the time they are actually soldered on the board.
The following documents are included on the LaACES CD-ROM
SkeeterSat schematic diagram filename: < skeetersat_sch.pdf>
SkeeterSat layout diagram filename: < skeetersat_pcb.pdf>
SkeeterSat bill of materials filename: < skeetersat_parts.pdf>
How to Read Circuit Diagrams I , from QST magazine filename: <How to Read Circuit Diagrams I.pdf>
How to Read Circuit Diagrams II , from QST magazine filename: <How to Read Circuit Diagrams II.pdf>
LSU v06/04/2007 Electronics Unit - Activity 3 2 of 2