Stony Brook University PHY 134 efield plot Breadboard Lab

Introduction: Ronald J. Portugal invention of the modern breadboard in 1971 had a significant impact on electrical design and prototyping. The holes of the breadboard connect electrically from being plugged with ends of wires, resistors, capacitors, inductors, and motors leads. The breadboard has columns a-j and rows 1-30. In this lab, the pattern of connected holes will be experimentally deduced using the IOLab by applying ​intelligence​ and attempting enough holes so that the pattern of connections is clear. The device will be a source of voltage as well as measurement with the input A7 used in this lab. The objective of this lab is to form a map of all connections across the breadboard and mimic complex circuits by "hopping" a connection using multiple wires using wire leads on the breadboard. It can be expected that the positive and negative power rails will not be connected on both sides. Methods/Procedure​: 1. Determine all holes connected to the Left Positive Power Rail and then the Left Negative Power Rail. 2. Determine all holes connected to the Right Positive Power Rail and then the Right Negative Power Rail. 3. Determine the pattern of connections in the central region. Hopping Exercise 1. Put a set of several wires in series to complete a circuit. 2. If three hops are successful, then a connection is made from 3.3V to A7 and the IOLab will read 3.3V instead of about half its battery voltage ( disconnected). 3. Document Two 2-hop circuits connecting IOLab(3.3V) to IOLab(A7) 4. Document Two 3-hop circuits connecting IOLab(3.3V) to IOLab(A7) 5. Document Two 4-hop circuits connecting IOLab(3.3V) to IOLab(A7) 6. Run the IOLab be certain of circuit function and then document with a list of connections and a figure. 7. Verify and document the full set of "hop" exercises