well that's very interesting; I had assumed that since my layout tool would fail the design if I put the board edge down the middle of the vias, that no one would build with that error. So, I hand grind REX.
On Thu, May 26, 2016 at 6:40 AM, Stephen Adolph <twospru...@gmail.com> wrote: > hey, cool. didnt you get a board violation for putting the board > perimeter in the middle of the via? > do you need a spacer under the board when in the socket? > > On Thu, May 26, 2016 at 1:04 AM, Brian White <bw.al...@gmail.com> wrote: >> Just verified a new option rom module design. >> >> Adapts a 28C256 SOIC to a Model 100/102/200 option rom socket. >> >> Allows re-programming the eeprom after the chip has been soldered to the >> module. A pullup resistor and a jumper on-board allows enabling/disabling WE >> on the eeprom as needed. >> >> There is a special programming adapter to make it convenient to re-program >> after soldering the chip, but there's a problem with that, so at the moment >> you can still program (re-program) using a dip28 test clip and manually >> arranging 28 jumper wires. Not the most convenient but functional. >> >> This is essentially the same as "ROMBO" or "MOMBO", but now it's an open >> source design up on oshpark and anyone can get one whenever they want. >> >> Home/self assembly isn't too bad. You don't need anything but the parts and >> a plain soldering pencil and some flux and solder. The soic chip was simple >> using the "drag technique". It's simple, just search "solder drag technique" >> on youtube. The trick is just the extra flux pooled around for surface >> tension. >> >> https://oshpark.com/shared_projects/4dLqXOs0 >> >> https://goo.gl/photos/Zs8ZnmDco9BwgDDBA >> >> -- >> bkw
