Ok that arrived on my door step today! It was a trade ive been waiting to arrive. But whats that have to do with this thread?? 90% of those IC tubes are older 74 logic chips, which means I can acually do a little bit of prototyping work if need be!!
So im thinking I want to design the board using the 74LVC family probably in surface mount. I think using the smt chips will save alot of board space, and the LVC family seems like a good choice. In order to make this work with the propeller and the Bs2 it will have to allow for 3.3v operation with 5v tolerant inputs which the 74LVC does, these chips are also faster than the propeller and since the board can be ran via a 3.3v supply it will take less power.
I have never done SMT before or had a board printed, Im not sure how these kits will be made yet but if I have to hand soldier them Im hoping someone has some info on what form factor chips and components to use? Ive accidently ordered SOT eeproms that were as big as an ant I dont want to do that again, I just want the easiest SMT stuff I can use an iron on if need be!
Ken,
The BOM/Gerbers/Schematic zip file you posted is a package for the Industrial IO Board 27113.
I have uploaded the files rwgast is looking for, in two zips. I included Gerbers, BOM, and assembly documentation in one zip and logic chip datasheets in another zip. Let me know how it works out!
Yep, have the board made for you from your layout, then use zeph-paste and an air soldering station or a toaster oven per some other threads. Perhaps search ebay for decent surgical loupes (tried the types doggie doc wears in his picture, non-starter for me) depending on how well your eyes are working. Mine are US Surgical Instruments and cost $50.00 used from a dental student. Just takes a bit of getting used to working 16in away from the piece.
Comments
-Tor
Ok that arrived on my door step today! It was a trade ive been waiting to arrive. But whats that have to do with this thread?? 90% of those IC tubes are older 74 logic chips, which means I can acually do a little bit of prototyping work if need be!!
So im thinking I want to design the board using the 74LVC family probably in surface mount. I think using the smt chips will save alot of board space, and the LVC family seems like a good choice. In order to make this work with the propeller and the Bs2 it will have to allow for 3.3v operation with 5v tolerant inputs which the 74LVC does, these chips are also faster than the propeller and since the board can be ran via a 3.3v supply it will take less power.
I have never done SMT before or had a board printed, Im not sure how these kits will be made yet but if I have to hand soldier them Im hoping someone has some info on what form factor chips and components to use? Ive accidently ordered SOT eeproms that were as big as an ant I dont want to do that again, I just want the easiest SMT stuff I can use an iron on if need be!
Anyone have any input...
The BOM/Gerbers/Schematic zip file you posted is a package for the Industrial IO Board 27113.