It's my design of course; when I did this board back in the day, castellation was not available from a cheap board shop I ordered from. I have actually never used Oshpark for a REX board, yet. I use a grinder to quickly deal with the extra fibreglass. I generally don't spin boards when they are "known good" and "I have several hundred of them" ;). Should be good enough as is.
Steve On Fri, Sep 29, 2017 at 4:31 PM, Josh Malone <[email protected]> wrote: > (I figured this might be of general interest to the group, so I'm posting > here rather than directly to Greg.) > > I've completed construction of the first of the REX boards that Greg sent > me. > > I've learned quite a few things through this process and have a bit of > feedback to on both the instructions and the actual board. Is the person > who maintains the board project on OSH park open to some changes for > optimizing hand-assembly? Basically, it would be great if some of the pads > for the resistors and caps could be made slightly longer. Not sure if > that's possible or not. Also, sanding the board is a big time sink, so it > would be great if it could be updated to use the castellation at the > factory. > > http://docs.oshpark.com/tips+tricks/castellation/ > > Even if the router edge only partly cuts into the vias, it would still > save a fair amount of time in hand-handing down to the actualy center of > the vias. > > I got GREAT results from using chipquick 63/37 solder and a concave drag > tip. I also learned lots of reasons not to use paste flux in a syringe. > > I'll have to find time to write up my exact assembly tools and procedure. > I also took plenty of pictures using a magnifying glass in front of my > phone camera :) > > https://twitter.com/48kRAM/status/913859915281829888 > > Greg: I'll try to get the programming done this weekend. I'm still > uncertain of my 102's stability, so I might end up only programming the > CPLD and then shipping you the first board to finis programming in the > Tandy and verify. Is that okay? Obviously, if it doesn't work, we'll > discuss further :) > > -Josh > https://twitter.com/48kRAM/status/913859915281829888 > https://twitter.com/48kRAM/status/913859915281829888 > https://twitter.com/48kRAM/status/9138599152818 >
