Error 404--Not Found

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:

10.4.5 404 Not Found

The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.

Error 404--Not Found

Error 404--Not Found

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:

10.4.5 404 Not Found

The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.

Tools of the Trade

April 2004

Stepper motor

Lin Engineering developed the SilverPak 17, a two-phase, 1.8° bipolar stepper motor with an integrated microstepping driver that delivers high performance. It features selectable step resolution from full-, half -, and quarter-step to eighth-microsteps; optically isolated step, direction, and disable inputs; and automatic current reduction with a disable switch. It operates on 12 to 24 V dc with low power dissipation and is offered in body lengths of 2.69, 2.92, and 3.24 in (68, 74, and 82 mm). Standard front-shaft extension length is 0.94 in (24 mm), and standard shaft diameter is 0.1968 in (4.3 mm). Other features include quiet operation, efficient current control, and 0.44 lb•ft (0.60 N•m) holding torque. Custom lengths and diameters are available.
read full story*

* This is a .pdf file. You’ll need the Adobe Acrobat Reader to view it.

Error 404--Not Found

Error 404--Not Found

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:

10.4.5 404 Not Found

The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.