This list will contain sites, divided up into several categories that the average electronics hobbyist would find useful. I would appreciate suggestions on sites people have used that they found useful. This list will not include stores of components suppliers - these are contained within another resource, see here. This list will also not include software - these can be found in another resource, see here. I have tried many electronics sites, especially forums and personally I would say this one of the most active and certainly gives the highest quality and widest range of advice. All the sites in this list will be free for use.
A site for sharing schematics of all types, only has a few features though and is not very active. However the lack of features does make it extremely easy to use.
This site has many features including software downloads and a design sharing feature. The design sharing feature enables improved collaboration compared with Schematics.com, having both comments and design stages.
Site based around re-making stuff, features such as shop, ideas and a moderately active forum. An active "projects" area conatining many great circuit/build
chopnhack: "has ready made solutions that you can pick apart and change, but they are tested and have gerber files. Of course they only use TI parts, but so what?! Nice of them to share completely tested solutions."
An IoT platform. Unfortunately there is currently a waiting list for a free developer account, this site also appears to be entirely or almost entirely corporate based. From previews the features appear extremely easy to use (notes will be improved once a developer account is obtained)
Can use devices such as Raspberry pi or Arduino to upload graph data. Lots of developement currently happening. This site is not totally corporate based as it the site advertises "free for unlimited public use no matter what" (see here: https://plot.ly/online-graphing-and-statistics-for-educators/)
A physical project in heavy development. FabLabs stand for Fabrication Laboratories, centred around advanced manufacturing, the FabLab movement has and still is going around the world. There may be a FabLab near you or there soon may be! Currently communication between people on this is not clear but one of the planned features is a forum (as you can see at the bottom of the linked page).
UK only, however there may be a equivalent for other countries. Excellent gathering spaces for intellectuals, a wide variety of knowledge is found in these places, in anything from computer based art to old analogue designs. Even if there is not one currently in your area (however, this is extremely unlikely as there are so many all over Britain) do not despair, one month there was no sign of one in my area, the next one with over twenty members sprang up with a rented space.
A very active forum style site (the actual forum section is not very active however) with useful information surrounding robots and projects useful for robotics. Many uploads of robot projects.
This may just be THE most useful site when designing parts for print on a 3D printer. The given link directs to the section containing weight, which is the section I personally use most.
