Wednesday, March 31, 2010

SMTTiny13ISP Project Completed

I completed the SMTTiny13ISP project and posted the project online.  Kits and parts have been added to the shop.

The SMTTiny13ISP is the project is created to program all those Tiny13v/a SOIC chips I'm using in the SMTCylon project.  Just as I promised, all CPUs from me are coming pre-programmed.  This is the tool I use to do it.

The circuit was just a bit too small and complicated for surface mount, so there are two jumper wires.  Very ugly.  Think I'm going to have to simplify those a bit i the next rev.  But this is a great image of how to clamp and program a Tiny13 using the kit.  A CPU is even included in the full kit!

The new packaging working out great, and looks good on this very simple kit.  Drilling the holes for this kit is going to be a real pain in the tail.  So, I'm charging a bit more for the board by itself.  I set the kit price at a little under $5, including a blank CPU.


More details on the project page.

Tuesday, March 30, 2010

Beta Kits Delivered

All the intial beta kits have been delivered save one, to Canda.
Still waiting on feedback from some of testers,
But initial feedback has been great.
Thanks for everyone that took the time to test this kit.

Version 1.3 of SMT Cylon corrects a lot of ills from the original 1.0 version.  PMI calls this Progressive Elaboration, where the output from the previous step feeds the next.

Version 1.3 adds generous spacing vertically to the LEDs, as many of the testers noted it was too easy to overlap traces and leds.  I also added dots to indicate pin 1 of the polarized devices.  For the LEDs that's the positive node, for the CPU that's pin 1.  The traces under the CPU were moved away from the pads, and the Positive nodes of the batter were connected.  While I'm using a battery holder that performs this function, it doesn't hurt to duplicate the function on the board.