I reflowed my first STM32H750 board tonight with a 100 pin QFP successfully. I used a stainless stencil and 4 layer PCB from JLCPCB, and it appears to work great. Next up I’ll try 4 of them on a single PCB, then move onto the BGA stuff.
The main room fire place box is almost complete, as well as some framing to get ready for the roof trusses. Nice view of Mt. St. Helens from our bedroom window today. Trusses will be delivered next Monday. The crane that would normally be used to lift them up won’t fit on the side of the house, and from the very front it is over 175 feet which it can’t do with that kind of load, so we are looking at some other options. I suppose a helicopter would work!
*this* is ‘full-stack’ development. Verilog->Processor Design->ISA->System->PCB->OS in C->Python web front end.
The addition of those rear walls makes all the difference. Now we need a roof and 81 windows installed!
The waterproof stain being applied to the rear deck is just to protect the wood between now and when the membrane and hard surface gets installed.
A little blue sky is nice. Rear dance floor is complete minus the spinning ball, so framing of the tall walls is underway.
The deck covers the entrance to the shop, and I’m planning on adding infrared heaters under the deck along with hot/cold water so I can wash cars in the winter.
I did a board layout today and sent it off to get produced. A simple STM32H750 board with the ports for interconnects pulled out, plus some LEDs, etc. First pic is my hand route using 10 mil traces. The autorouter would give warnings with 10 mil traces, but if I cut it down to 6 mil traces it did fine.
The rear deck is starting to take form! I suspect on Monday they will finish the deck joists and move those large glulams for the roof over the deck into place. The deck is a bit over 1000sq ft, so certainly large enough for a BBQ. There are two shots below showing what looking towards and away from Portland look like. Looking towards Portland the bridge you can see is the St. Johns Railroad bridge (actually called Burlington Northern Railroad Bridge 5.1).
Small update – Most of the interior walls are finished with the exception of the large two story back walls around the great room. The decking beams will be installed next, as well as floor sheathing for the deck, which will then make building the two remaining tall walls a bit easier. I would guess we are 2-3 weeks from starting roof construction.
I have been working on refining my PCB skills. I came up with a board idea, did the schematic, laid out and routed the board, ordered the PCB and parts plus a stencil, stenciled the paste, placed the parts , reflowed the board, powered it up…. and it worked perfectly! The board is just something fun to play with.. it is a 4 processor arduino board with 4 ATMega328PBs in an SPI ring network ( since the 328PB has two SPIs).
I made a small video of the board process for those inclined to learn: https://youtu.be/V1xXG8YTmK4
