LINKS
Here is a short list of external links that I have drawn together in the hope that they are either useful or interesting or preferably both.
Symbols, footprints and 3D models
Design resources
www.datasheetlocator.com - does what it says, mostly
www.rfcafe.com - huge resource for RF and analogue information
www.epanorama.net - lots of circuit ideas and other information
www.ganssle.com - great information on embedded tools and techniques
PCB design
focus.ti.com - great application note from TI
leadfree.ipc.org - the IPC's lead free information
www.speedingedge.com - some papers on PCB design methodologies
Reference
hyperphysics.phy-astr.gsu.edu - reference for physics, chemistry and biology
www.batteryuniversity.com - reference on rechargeable battery technology
www.hardwarebook.info - details of common and obscure connector and cable pin outs
General interest/Random
www.feynmanlectures.caltech.edu - brilliant lectures on physics
www.oldcomputers.net - see how many of these you can recognise
www.sparkmuseum.com - fascinating early scientific devices
www.clangers.com - a critical phase in my development
www.withouthotair.com - a discourse on energy policy
www.worldmapper.org - a different way to view the world
www.repairfaq.org - lasers and high voltage stuff, in ASCII graphics
www.amasci.com/tesla - how to electrocute yourself without even knowing it
www.ecglibrary.com - might be useful after playing with the item above
www.aardvark.co.nz - I'm so glad I don't live next to this Kiwi
www.JieLi-AC690X - programming the ubiquitous JL AC690X blutooth audio chip