Andrew Kohlsmith's activity

From 02/18/2015 to 03/19/2015

03/19/2015

09:24 PM iPod Nano 6 Display Breakout Bug #471: 3.3VEN signal is active low... make it active high
Fixed for real in commit:a166d76. Andrew Kohlsmith
08:47 PM iPod Nano 6 Display Breakout Bug #601 (Feedback): TLV61220 footprint wrong
Andrew Kohlsmith
08:46 PM iPod Nano 6 Display Breakout Bug #601: TLV61220 footprint wrong
Footprint fixed in commit:122c7eb. Andrew Kohlsmith
08:19 PM iPod Nano 6 Display Breakout Bug #601: TLV61220 footprint wrong
Part doesn't work for us anyway, see #602 Andrew Kohlsmith
08:46 PM iPod Nano 6 Display Breakout Task #604 (Feedback): Remove the data/clk pulldowns
Removed in commit:122c7eb. Andrew Kohlsmith
08:23 PM iPod Nano 6 Display Breakout Task #604 (Feedback): Remove the data/clk pulldowns
I need finer control over the DP/DM and CLKP/CLKM lines in order to properly transition between the LP and HS modes. ... Andrew Kohlsmith
08:21 PM iPod Nano 6 Display Breakout Task #603 (New): use an LED driver for the backlight
Need to bring the LED- line out so it can connect to the feedback path. See #602. Andrew Kohlsmith
08:20 PM iPod Nano 6 Display Breakout Bug #470 (Rejected): determine TBD values for backlight boost converter
Invalid, see #602 Andrew Kohlsmith
08:19 PM iPod Nano 6 Display Breakout Bug #602 (New): boost converter won't boost high enough
The TLV61220 has a maximum output voltage of 5V. We need about 16V.
There aren't many SOT23 boost regulators which...
Andrew Kohlsmith

03/18/2015

06:28 PM iPod Nano 6 Display Breakout Bug #601 (Feedback): TLV61220 footprint wrong
The SOT23-6 footprint I created is mirrored top-to-bottom (i.e. pin 1 is pin 3, pin 4 is pin 6).
!picture963-1.png...
Andrew Kohlsmith
05:42 PM iPod Nano 6 Display Breakout Bug #600: Internal short between LED+ and RST#
The fix is easier than I suspected.
1. cut the trace between P$8 and the via that is shorting RST# to LED+
!pic...
Andrew Kohlsmith
04:45 PM iPod Nano 6 Display Breakout Bug #600 (Feedback): Internal short between LED+ and RST#
Andrew Kohlsmith
04:44 PM iPod Nano 6 Display Breakout Bug #600 (Resolved): Internal short between LED+ and RST#
Resolved in commit:84af1ee. Andrew Kohlsmith
04:44 PM iPod Nano 6 Display Breakout Bug #600 (Feedback): Internal short between LED+ and RST#
I guess I didn't do the DRC with all layers on and ignored Eagle's "2 errors on hidden layers" warning.
The LED+ a...
Andrew Kohlsmith
12:32 PM iPhone 4 HSMC Interface Task #486: Determine correct connectors for screen
The Panasonic connectors are not compatible. Right now I'm just ordering in iPhone motherboard display connectors. Andrew Kohlsmith
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