Ok, the final dozen are being assembled over the next week (or two).. Two of them are already spoken for.
As I dive into this last batch I thought I'd share a few photos of how I put these things together just for the sake of historical documentation
Start off with the 3D printed shells, the OBD2 Cables (which I clip and wrap the 12 unneeded conductors leaving the 4 I need (GND, 12V, EVCAN-H, EVCAN-L)), as well as the LeafDD PCBs hand soldered by my friend Vo for $10/pop (When she solders, it looks like a machine did it.. when I try SMT soldering it looks like a 12 year old did it).
Then the 4 wires are soldered in place and the cable is secured with two zip-ties. BTW, the unpopulated components were for digital lines and serial communication so that the LeafDD could be used as the front hub of a Chademo charger supplying all the signals to the Chademo connector while talking serially to a DC power supply... I just never tried it. That little regulator on the top left is what makes that corner get toasty warm.. If the temp sensor in the 8051 processor detects things getting too warm it will dim the display in software to prevent over heating.
The boards are powered up by a female OBD2 cable supplying 12V and the Silicon Labs 8051 is flash programmed from my laptop. I also do a sanity check on the powered CANH and CANL to verify neither is grounded (Leaf doesn't like that!)
Then I screw on the little nuts and bolts and add the standoffs and header for mounting the OLED board.
And finally add the OLED, screw it in place and solder the 20 pin header on both sides. Power up and test. Ta Da! Then off to my Leaf for in-car testing, a serial number on the back, then packaging for shipping.