Add Changelog for SM1000-REV-B2 RGB

git-svn-id: https://svn.code.sf.net/p/freetel/code@1740 01035d8c-6547-0410-b346-abe4f91aad63

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+Change Log for SM1000-REV-B2\r
+\r
+Tuesday, July 07, 2014 04:05 PM\r
+====================================\r
+\r
+[ ] SW3 holes not big enough.\r
+               Hole is .5mm. Pin is .6mm. Hole should be 1.0mm per spec sheet. Will change. \r
+\r
+[ ] Is C26 rated at 25V in BOM? \r
+               C26 is 25V in schematic, 16V in BOM. \r
+               OOPS! C23, C26, C40 & C46 should all be 25V. Will change database & BOM.  Murata # GRM188R71E104KA01D, Digikey # 490-1524-1-ND, Part Def: CAP CER 0.1UF 25V 10% X7R 0603\r
+\r
+       [ ] LED8 takes up whole of pads so diff to solder \r
+               Will enlarge pad in library. \r
+\r
+[ ] Is CN3 a standard size?  My DC plugs don't fit in it       \r
+               2.5mm ID, 5.5mm OD Plug. CONN PWR PLUG DC 2.5X5.5 8A MOD Digikey # \r
+               CP3-002BH-ND \r
+               This is probably most common size in USA. Change? \r
+\r
+[ ] couldn't solder bottom pad of U5 by hand      + hope it's OK \r
+               Attached to large gnd plane. Hard to solder. Designed for IR SMT \r
+               assembly. Try large iron on vias from bottom. \r
+\r
+[ ] Can R6,R2,R5,R3,R4 be 10k to match R1? \r
+               Don't know if 10K will work for R6. Discovery has 680 or small value. \r
+               Try it. Can't hurt. \r
+               R2 & R5 Are I2C pins. Recommended 4.7K for max speed. Not used now on \r
+               SM1000. 10K would limit speed if used. Try it. \r
+               R3 & R4 should work with 10K. \r
+               Let me know results & I can change values if appropriate. \r
+\r
+[ ] Would VDDA power supply circuit be better located closer to U1? \r
+               I think they are pretty close now. I'll look at VDDA function and advise. \r
+\r
+[ ] Larger TAPR/Credits text on bottom?      + there is plenty of room \r
+               Tried to get printing without visa & pads in the text. Smallest via has \r
+               .016" drill and is tented. I'll enlarge text & see what I can do. \r
+\r
+[ ] What was Vin range meant to be? \r
+               VIN is 1 diode drop lower than VEXT(6-16VDC) or approx 5.5 - 15.5VDC Used to power LM386 to get more output swing.\r
+\r
+[ ] move R20 label close to R20     + I loaded R20 in the wrong place! \r
+               Will do. \r
+\r
+[ ] is 4k7 missing from BOM or just my order?    + I didn't have any in my Digikey order \r
+               Part definition error. Part # in part definition field. Will correct database & BOM.\r
+               This affects R2,R3, R4, R5 & R48. Should be Vishay Dale # CRCW06034K70FKEA, Digikey # 541-4.70KHCT-ND, Part Def: RES 4.70K OHM 1/10W 1% 0603 SMD\r
+\r
+====================================\r
+Tuesday, July 08, 2014 10:54 AM\r
+====================================\r
+\r
+[ ] Re C26, could u pls align the BOM and sch?  I'm not sure which one has to change. \r
+               C26 should be 25V to accommodate +16V power in max. \r
+               OOPS! Found that C23, C26, C40 & C46 all should be 25V. That's why I made them separate line item. I'll Change BOM to Digikey part # 490-1524-6-ND Murata # GRM188R71E104KA01D\r
+\r
+[ ] Re CN3, Hmm, now I'm not sure!  I dug around in the shed and found a connector that fits so I'm OK for now. \r
+               CN3 is Switchcraft RASM712PX   2.5mm ID, 5.5mm OD Plug.  CONN PWR PLUG DC 2.5X5.5 8A MOD Digikey  # CP3-002BH-ND\r
+               I've noted a problem, but will wait til you decide.\r
+\r
+[ ] OK I just check the BOM I have, and there are no 4.7k resistors on it, e.g. R2, R3, R4, R5.  Oh OK, the BOM has a part number.  Not sure what that mapped to on my Digikey order, just noticed I didn't get any 4k7s.  Maybe change the BOM to indicate the part value? \r
+               Part database  error, invalid part definition. Digikey & Vishay Dale part numbers are correct. Part definition for R2, R3, R4, R5 & R48 should be: RES 4.70K OHM 1/10W 1% 0603 SMD Will correct part database & BOM.\r
+\r
+====================================\r