5b7c755ee1
schematics: flip audio 0-3
7 years ago
3fa407e54f
schematics: use 12-bit dac instead of 8-bit
7 years ago
f4d7692c91
schematics: SD card symbol with 2 CD pins connected to GND
7 years ago
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
7cebd0afa5
changing DAC resistors 100-820 ohm -> 150-1200 ohm
...
few 220 ohm resistors changed to 150 ohm to simplify BOM
7 years ago
050a70079a
move one audio-v pin from bank0 to bank7 so
...
now all audio jack pins are on bank7
7 years ago
0d71e508ae
analog: audio ring2 resistor DAC network connected to FPGA
...
copper infill is getting thin, so minimal-thickness traces
are used 0.127 mm
7 years ago
6d74bb29fc
PCB v1.7 fix wrong audio jack connection
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)
...
Non-serdes chips need GND connection on unit "H".
"power" sheet now connects GND's at unit "H".
7 years ago
e4fc99887e
moving GND and VCC on schematics symbols to
...
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
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
6d14ed8ff0
Placing DIP switch, but not yet connecting it to FPGA
7 years ago
37bb008e24
ADC connecting REF+/REF- and SPI
7 years ago
2ca8acc32d
ADC chip moved on top layer.
...
Connecting 8 analog lines to J2
and remaining VCC/GND
7 years ago
32836831ae
i2c of RTC connected to GPDI i2c
7 years ago
ee20b46f6d
connecting ADC substrate pad to GND
7 years ago
2153a220a0
schematic symbol for ADC MAX11123
...
small PCB traces cleanup
ADC chip placed on PCB but connected only to GND
7 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
b7500cc477
increasing thickness of power traces, moving clock
...
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
...
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
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
85cb0b3f93
Placing 40-pin connectors side-by-side,
...
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
...
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
...
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
23c4cde741
GPDI I2C 5V level shifter
8 years ago
7fd0f561fc
Add SPI flash chip
8 years ago
b6697c4012
Audio 3.5mm jack resistor network
8 years ago
aa8fac622b
SD card to sperate "sdcard" sheet
...
small rearranging and comments
8 years ago
17ba085b6f
audio jack to "analog" sheet
8 years ago
davor