Printed Circuit Board Class 5-12-2011
Class materials for the Make Your Own Printed Circuit Board class held on May 12, 2011
If you attended the class and purchased the class materials, you should have received all the parts necessary to build a "dark detector" circuit. The circuit makes an audible buzz when the photocell is not exposed to sufficient light. Great fun to hide in someone's bedroom!
Contents
Parts List
- R1: 47K Ohms (yellow violet orange)
- R2: 1K Ohms (brown black orange)
- R3: 10K Ohms (brown black yellow)
- PH1: Cadmium sulfide photocell
- IC1: LM555N timer
- C1: 0.05 uF
- C2: 4.7 uF (NOTE: This component is polarized; consult #Component Placement for correct orientation.)
- 8 Ohm piezo-electric speaker (NOTE: This component is polarized; consult #Component Placement for correct orientation.)
- 9 Volt battery connector (NOTE: This component is polarized; consult #Component Placement for correct orientation.)
Other Materials
Schematic
Board layout
Component Placement
Note that the components are placed on the non-copper side of the board.
Presentation (in OpenDocument Presentation format)
Note: the schematic that appears in this presentation is not the schematic that was used to create the board layout used in the class. See #Schematic for the schematic that corresponds with the board layout used in the class.
