JAVA Buzzer sensor with Raspberry Pi

Hello there, 

How did you end up reading this post ? ;-P

This is a quick post to publish the corrections on the Super Kit for Raspberry Pi Model B. This is a cheap kit where the documentation is very poor and it contains some mistakes. 

The first and more important mistake to be aware is that the power cable should be connected to 3.3V not the 5V like shown in the images of the poor booklet pdf file. 

This is an image of the lesson 7, but same mistake applies to all lessons from 1 to 7 where there is power connection required. Also notice that in this lesson it is difficult to see what are the pins of the transistor. The Emitter is connected to the negative side of the buzzer and the collector is connected to ground.

For good diagrams on the pin out of each model of the raspberry pi this is a good resource.

As an extra fun step for the lesson 7 add an extra led in parallel with the buzzer as shown in this schema below. It looks like a proper alarm system. :-)

More to come soon ....

Posted by Marc Andreu.