User manual

LPCXpresso Experiment Kit - User’s Guide
Page 43
Copyright 2013 © Embedded Artists AB
Figure 16 – Signal GPIO_7-BUZZ on Schematic Page 2
Add the buzzer to the breadboard. Some rearrangement might be needed. Note that the buzzer in the
component kit might look different from the one in the picture below. Also note that both the PNP
transistor and the buzzer are polarized components so it is important to turn them correct. Also note
that the series resistor on the PNP base pin is 1.5 kohm (a different value than we have used so far).
Figure 17 – Breadboard Connections for SW2, SW3, Buzzer and LED