Archive for July, 2011

DIY Power Supply for Pentax K5 DSLR

Monday, July 18th, 2011

This is a follow-up to my prior post about a DIY DC to DC power supply for my FujiFilm S100fs camera.  I recently purchased a Pentax K-5 which I hope to use for time lapse work.   After doing some testing I found that the internal battery in the K-5 will power the camera for 3 hours and was capable of taking more than 10,000 6MP stills in continuous shooting mode.   However for longer term shooting, a DC power source is necessary.

The K-5 provides a strange DC-IN port labeled 8.3vdc.  This is the same port used on several of the K-series cameras and would normally be connected to Pentax’s D-AC50 AC power adapter.   But this would require me having an DC to AC inverter to power the AC to DC adapter.   This DC to AC to DC conversion would be very inefficient, requiring 5x the battery capacity.   So I built a similar DC to DC converter based on Dimension Engineering’s SWADJ-3 and D-SWADJ switching regulators.


CO2 Powered Pine Wood Derby Car

Thursday, July 14th, 2011

Live from TTP 2011 in Provo Utah…   one of our TTP members, James, entered his highly effective CO2 powered derby entry.

NetWare 7 – Futures and Roadmap

Friday, July 1st, 2011

With Novell TTP Conference in Provo next week and Brainshare in Salt Lake City just a couple months after, there is much speculation as to the implications of the Novell acquisition.   These events represent “first contact” with the new management teams, and give us a window into the sentiments of Novell employees and customers.   But if the  following picture gives us any hints,  its bound to be one heck of an event!

Netware 7?   What is Novell thinking?  Perhaps Attachmate execs see there is some value left in the NetWare brand, or perhaps re-badging, in a literal sense,  of the OES product line is in the future?   Or perhaps they are understanding “legacy” means mature, stable, and reliable.   In an era where IT infrastructure is harder to defend, the alien nature of NetWare enhances its suitability for hardening the assets in the data center.

I don’t know, but I can say that I will be watching both of these events carefully.   NetWare 7?   How bad can it be?