We all hate to throw electronics away. Use your 5 volt Arduino and have fun with them instead! Raid your electronics junk box to build the Cestino (Arduino compatible) board and nine other electronics projects, from a logic probe to a microprocessor explorer, and learn some advanced, old-school techniques along the way. Don’t have a well-stocked junk box? No problem. Nearly all the components used in these projects are still available (and cheap) at major electronic parts houses worldwide. Junk Box Arduino is the ultimate have-fun-while-challenging-your-skills guide for Arduino hackers who’ve gone beyond the basic tutorials and are ready for adventures in electronics. Bonus materials include all the example sketches, the Cestino core and bootloader source code, and links to suppliers for parts and tools. Bonus materials include extensions to the Cestino, Sourceforge links for updated code, and all the source-code for the projects.