c381c4c5c4
small PCB optimizations
8 years ago
1f60f95a71
compatible OLED models: SSD1306 or SSD1331
8 years ago
28c4106026
J2 GPIO: routed in the purple plane only
8 years ago
aabd353e71
J1 GPIO: grouping lines on purple plane
8 years ago
752eddee0e
J1 routed using only purple plane, (yellow plane made free)
8 years ago
1e5e0b01a6
connecting JTAG lines to FTDI serial lines RI DCD CTS DSR
...
as those pins are by default inputs and can be reconfigured as outputs
similar but not identical pinout as the one that works from ujprog
CBUS used to force-wakeup of the board from sleep state
2 LEDs to CBUS pins to display usb enumeration and activity status
8 years ago
57fa143c11
connecting 2.5V and 3.3V sources to BGA planes
8 years ago
4a0cc08307
connecting 1.2V core voltage, solving FPGA voltage plane,
...
still too thin wire leading to SMPS supply
8 years ago
5e953da6b9
connecting required pins for WiFi programming
8 years ago
5432fd6540
connecting clock and ftdi USB
8 years ago
4c13f262e8
connecting FTDI TXD/RXD
8 years ago
092e601af1
connecting LEDs
8 years ago
364957f9e0
connecting OLED
8 years ago
feb31c8f87
moving inner layer routes away from BGA
8 years ago
24c52062fa
moving routes under BGA out of inner layers
8 years ago
6e2e5f8c39
moving routing out of inner layers under BGA to allow
...
larger copper fill zone for power supply
8 years ago
3a9160cb16
scrapping current routing, placing power supply on copper zones under the BGA
8 years ago
21aa552e1a
placing copper fill zones for power supply by the book
...
similar to TN1074
8 years ago
37f7a62a25
reducing minimal drill size to 0.2 mm as
...
recommended in lattice BGA guide.
Seeedstudio meets this capabilities
OSHpark doesn't
8 years ago
8061b47da8
moving some resistor near flash chip
8 years ago
b12f1b64a6
routing spi flash lines
8 years ago
820f30f598
routing JTAG
8 years ago
3a079bd1d2
moving some resistor closer to ftdi
8 years ago
48f79d581b
reordering PCB elements to simplify or shorten routes
8 years ago
6e48d42150
fully routed GPIO
8 years ago
dcc2d375ea
routing additional pins to J2 GPIO. 2 differential pairs left to route
8 years ago
9f0d9c46a7
routing half of J2 gpio
8 years ago
e30bbeea40
routing 4 GPIO on J2
8 years ago
48dc148919
manually routing J1 differential
8 years ago
9050eefd6e
update fill zone
8 years ago
3446afcc08
optimizing PCB component placement
...
and audio bit ordering
8 years ago
19b884baef
using corrected schem symbol, reordering pins
8 years ago
39dce76f0a
use new schem symbol
8 years ago
2cda80c3a8
manually routed few tracks of GPIO
8 years ago
8a53acb71a
cleaning GPDI routes and moving OLED back in place
8 years ago
70fb21781b
reorder GPDI differential pairs for almost straitforward routing
8 years ago
a8f1214b27
reorder SDRAM to FPGA connection for straightforward routing
8 years ago
19c91e5c6b
differential pair track thickness and spacing
8 years ago
632e5bd443
importing netlist with differential pairs named + -
8 years ago
ec42a18d26
reordering RAM connections to use peripheral pins near SDRAM chip
8 years ago
53f11a6950
reducing track width to 0.19 mm to pass out of 2nd row of BGA
8 years ago
961755fc98
manual routing BGA power
8 years ago
af042dfef0
manually routing BGA power
8 years ago
a1d25d9d24
create copper fill layers
8 years ago
d6fd30e59c
jumper to disable wifi module
8 years ago
38517df9f6
fine tuning via diameters and clearances
8 years ago
dd597e7b49
board production rules for oshpart
8 years ago
1c5b8a64a3
use new footprint for crystal oscillator
8 years ago
508318d712
PCB moving 3.5mm DAC resistors below 3.5m jack, side-by-side
8 years ago
e9825a4105
enlarging the board for 7x2.54 mm to fit triple protoboard
...
moving OLED into the center (but display turned upside down)
moving heavy parts GPDI and 3.5mm jack on top side
better rearranging the buttons
8 years ago
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