With this kit you can build most of the circuits described in the book and more. A detailed description of the PCB and how to use it is available in Chapter 11. If you do not have a Chapter 11 in your book, you can download it as a PDF from the Elektor website or from www.polyvalens.com.
The PCB has room for an LCD, a reset pushbutton, two generic pushbuttons, two LEDs, two power transistors (MOSFET or BJT), a humidity sensor, a pressure sensor, a buzzer, a potentiometer, a microphone with preamplifier, an infrared sensor, a photoresistor, a temperature sensor and a connector for the serial port, a filtered analog input and switched power outputs. Most of the features can be used together.