If you are having any problems with the projects in this book, or have any feedback, or would just like to get in touch then please contact me at

You can also find me here: username: Si

This is the first edition and there may be bugs in the book, so I am always grateful for any reports of errors that people find. I will record any such errors here, so that others can make use of the information.

Have fun with the book 


Page 152. Figure 12-3 has some of the track breaks in the wrong place. The corrected figure is below:

The problem is in columns 14 and 15. The photograph of the back of the stripboard (Figure 12-4) is correct.

Page 191. Figure 15-9. The wiring for the PIR power supply is swapped over. It should be GND to GND and +V to the switch and batter +.