Delete comment from: Ken Shirriff's blog
Thank you for this wonderful site, i learned a lot for my problematic magsafe. My magsafe doesn't charge my macbook. I checked with different magsafe adaptors and indeed my macbook charges. However new magsafe adapter i bought from e-bay doesn't charge any of my macbook i own. I wanted to check my middle pin information using Arduino and dumped the information. You can see the serial number i dumped
FFFFFFFFFFF08FF9
FFFFFFFFFFC63FF3
FFFF83FFFFFFBFCF
FFFFFFFFE0FF07FE
FFFFFFFFFFFFFFF8
FFFFFE1FC3FF87FE
FFFFFFFFFFFFF877
FF7F7D740000001F
FFFFFFFFFFFFFFFC
FFFFFFFFF83F07FE
FFFFFFFFE07F07FE
FFFFFFFFFFFFFF7F
FFFFFFFF83F87FE1
FFFFFFFFFFFFFFFC
FFFFFFFFFFFFFFF0
FFFFFFFFC3F87FE1
FFFFFFFFFFFFFE7F
FFFFFFFFFFFFFF80
FFFFFFFFFFFFFFC0
FFFFFFFFFFE03FF8
FFFFFFFFFFFFFFCF
FFFFFFFFF83F07FE
FFFFFFFFFFFC07FE
FFFFFFFF87FFFFCF
FFFFFFFFFEFFFFBF
FFFFFFFFFFFC07FE
FFFFE0FFFFFFFFFC
FFF83F87FF5FFFF8
FFFFFFFFFFE187FE
FFFFFFFFE7FFFFCF
FFFFFFFFFFFCFC7F
FFFFFFFFFFFC0FF9
FFFFFFFFFFFF1FF9
FFFFFFFFFFFFFF07
FFFFFFFFFFFFFF0F
FFFFFFFF83F87FE1
As you can see it randomly dumps numbers. I also checked a working unit and it looks ok. At least it gives the same serial number all the time. However the serial numbers pasted above seems like there is a problem in the chip. I wonder if you could comment on this, and is it possible to reprogram these chips using onewire protocol maybe with Arduino? Thanks
Jul 27, 2015, 8:34:21 AM
Posted to Teardown and exploration of Apple's Magsafe connector