8/11/2015, Second Gen Boards arrived

Good gosh!  I am consistently amazed at how quickly boards can be produced in China and get shipped to the US even with slow Hong Kong post shipping.  The boards were ordered on 7/28/2015.  It is now 8/11/2015, so the boards were received in 2 weeks even choosing the slowest shipping option available.  (They did up their shipping rate by $3 which annoys me, but it continues to be a really good value for the money.

It is funny how when laying out boards, it is always zoomed into the board, so it seems like they are rather large.  Then when they are received, wow, they are really itty bitty boards.  Each wing board is approximately 1″ x 2″.  When eight of them are thrown down on a single PCB (i.e. the mashup which is in the repository), it is still only 4″ x 4″ of PCB (or < 10 cm x 10 cm).

Last night I cut out all the boards using the tile saw.  Next time, I might change the mashup layout a little bit to minimize the number of cuts that I have to make, but all in all, it worked out really well.  It took about an hour to cut out the 80 boards.  I soldered up two of each of the cards and I’m shipping them out to somebody who is interested in working on the embedded code for the next generation boards.

After looking at the PSoC 4200 in a little bit more depth, I’m not really that jazzed about their initially programmed bootloader.  It uses too many resources and does not seem “hardened” enough.  One of the lower priorities will be to rewrite that piece of code.

Here’s a quick picture of all the boards cut out:

LotsOBoards

Here are the boards that are populated.  Note:  When I tried to do the mashup, I lost the VLED voltage plane, so I had to add a wire.  I fixed that issue the day after I ordered the boards, so the Gerbers in the repository are correct.

Populated

Here is a mockup of the PSoC 4200 with the wing boards.  This guy supports 4 solenoids, 8 inputs, and 16 incandescent bulbs (Note:  Inputs don’t require a card because they are attached to the inputs of the processor.  You can see the connector soldered straight to the board):

Sol4, Inp8, Incand 16

Here is a mockup of the PSoC 4200 with the wing boards.  This guy supports 8 solenoids, 8 inputs, and 8 incandescent bulbs:

Sol 8, Inp 8, Incand 8

Last mockup with the wing boards.  This guy supports 4 solenoids, 16 inputs, and a SPI interface that can be used to talk to WS2812 chips (Neopixels):

Sol 4, Inp 16, SPI

I did some quick power measurements on SS3.  Power for SS3 in Attract mode 142W.  Power holding up both flippers 202W.  Base power for the four power supplies creating 48V is about 50 to 60W.  Taxi in attract mode is 110W.  Holding both flippers up is 140W.  I’m going to be removing 4 of the PC power supplies and replacing it with a single 36V supply.  That should reduce the power by a good amount.

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