3915779e0c
schematics: part numbers and URLs of datasheets and manufacturers
...
of most chips and connectors. Small parts not done yet.
7 years ago
52814d6ae0
WIFI LED (blue) on schematics
7 years ago
a5a51a8f28
connected missing SD card pins to esp-32
7 years ago
cca17d282d
open-close to check that everything loads fine
7 years ago
35b3a8b3dd
changing to 45F which is production device now
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schem symbol 45F fixed typo T8->T7 (GND) and SERDES
7 years ago
ba4c8e8d22
PCB v1.6 SDRAM fully reworked
7 years ago
1ea88bda53
Adding pins to schematic symbols for all chips in unit "H" (SERDES)
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Non-serdes chips need GND connection on unit "H".
"power" sheet now connects GND's at unit "H".
7 years ago
d57b16519c
update (I hope) all chip units to 85F
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add more GND vias
7 years ago
e4fc99887e
moving GND and VCC on schematics symbols to
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common locations for planned PCB which
supports upgrade path for example
12F->25F->45F->85F and if possible ECP5U->ECP5UM
7 years ago
07de158d38
R56 for FT231X rev A,B,C workaround from TN140_FT231X Errata
7 years ago
bc4b88ee58
Micro SD: using SCHD3A0100
7 years ago
10df092413
using modified ECP5 footprint
7 years ago
bab7ee607e
placeholder for 1.5k pullup for usb 1.0
7 years ago
f120d212d9
433 MHz onboard antenna (need to uncover copper infill layers)
7 years ago
0229a768ad
FPGA direct-to-pin Hackish USB transciver 27 ohm + 3.6 V zener
7 years ago
5f589c33f4
USB directly to FPGA for possible USB1.1 core
8 years ago
6d14ed8ff0
Placing DIP switch, but not yet connecting it to FPGA
8 years ago
37bb008e24
ADC connecting REF+/REF- and SPI
8 years ago
2153a220a0
schematic symbol for ADC MAX11123
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small PCB traces cleanup
ADC chip placed on PCB but connected only to GND
8 years ago
be09416928
Add 27 ohm resistors in series with FTDI USB and readme update
8 years ago
278ac6b341
2.2uF for ESP-32 and gerber update
8 years ago
ee7d266543
Resistors for LEDs
8 years ago
18aef04f2c
JTAG header
8 years ago
dcbf46dff2
optimizing PCB
8 years ago
b7500cc477
increasing thickness of power traces, moving clock
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to a bank which is always at 3.3V
8 years ago
2a60828a99
schem. pullup 1.5k for USB 1.1 full speed mode
8 years ago
23b588ff16
Routing... 4 routes remaining
8 years ago
0f9d00f602
Buffer capacitor for SDRAM
8 years ago
1e5e0b01a6
connecting JTAG lines to FTDI serial lines RI DCD CTS DSR
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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
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
19b884baef
using corrected schem symbol, reordering pins
8 years ago
39dce76f0a
use new schem symbol
8 years ago
a8f1214b27
reorder SDRAM to FPGA connection for straightforward routing
8 years ago
ec42a18d26
reordering RAM connections to use peripheral pins near SDRAM chip
8 years ago
d6fd30e59c
jumper to disable wifi module
8 years ago
c297a5294f
adding 25 MHz oscillator and moving some parts around
8 years ago
12e89e677a
connecting wifi, usbserial, oled, sd card
8 years ago
a477fbd050
connecting flash config chip
8 years ago
dc1ae11172
partially routed board using "freeroute" autorouter
8 years ago
85cb0b3f93
Placing 40-pin connectors side-by-side,
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changing ft2232 to ft231x
8 years ago
a7de1a4e58
power button
8 years ago
4f3fabdb5f
oled updated on the schematic and PCB
8 years ago
6639abded3
add 4 mounting holes
8 years ago
b661cacede
Change to 2x20 pin headers, PCB layout currently sub-optimal
8 years ago
f9ba6fa20b
chage ESP8266-12E to ESP32S
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approximate (maybe incorrect) connections - need review
(programming esp from fpga, jtag, sd, chip enable)
8 years ago
a0dae5bb6a
another diode to duscharge C14 at shutdown
8 years ago
cf01d5cc8d
Power: Replace discharge resistor which leaks with
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a diode for discharge C at shutdown
HDMI pin 0 is now the shield and connected to GND
8 years ago
dc6ea57d67
Label button pullup net "BTNPU"
8 years ago
Emard