Emard
d57b16519c
update (I hope) all chip units to 85F
...
add more GND vias
7 years ago
davor
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
Emard
07de158d38
R56 for FT231X rev A,B,C workaround from TN140_FT231X Errata
7 years ago
davor
bc4b88ee58
Micro SD: using SCHD3A0100
7 years ago
davor
c42c90ae37
FPGA_DONE connected to ESP32 over a resistors,
...
Other resistors moved away to allow routing thru the mess.
ESP-32 connected missing GND pin
7 years ago
davor
10df092413
using modified ECP5 footprint
7 years ago
Emard
bab7ee607e
placeholder for 1.5k pullup for usb 1.0
7 years ago
davor
f120d212d9
433 MHz onboard antenna (need to uncover copper infill layers)
7 years ago
davor
0229a768ad
FPGA direct-to-pin Hackish USB transciver 27 ohm + 3.6 V zener
7 years ago
davor
6d14ed8ff0
Placing DIP switch, but not yet connecting it to FPGA
8 years ago
davor
37bb008e24
ADC connecting REF+/REF- and SPI
8 years ago
davor
2ca8acc32d
ADC chip moved on top layer.
...
Connecting 8 analog lines to J2
and remaining VCC/GND
8 years ago
davor
2153a220a0
schematic symbol for ADC MAX11123
...
small PCB traces cleanup
ADC chip placed on PCB but connected only to GND
8 years ago
Emard
be09416928
Add 27 ohm resistors in series with FTDI USB and readme update
8 years ago
davor
278ac6b341
2.2uF for ESP-32 and gerber update
8 years ago
Emard
ee7d266543
Resistors for LEDs
8 years ago
Emard
18aef04f2c
JTAG header
8 years ago
davor
b7500cc477
increasing thickness of power traces, moving clock
...
to a bank which is always at 3.3V
8 years ago
davor
2a60828a99
schem. pullup 1.5k for USB 1.1 full speed mode
8 years ago
davor
23b588ff16
Routing... 4 routes remaining
8 years ago
davor
0f9d00f602
Buffer capacitor for SDRAM
8 years ago
davor
aeaf64f99c
connecting all BTNs except power BTN
8 years ago
davor
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
Davor
3446afcc08
optimizing PCB component placement
...
and audio bit ordering
8 years ago
Davor
39dce76f0a
use new schem symbol
8 years ago
davor
d6fd30e59c
jumper to disable wifi module
8 years ago
davor
c297a5294f
adding 25 MHz oscillator and moving some parts around
8 years ago
Davor
12e89e677a
connecting wifi, usbserial, oled, sd card
8 years ago
Davor
a477fbd050
connecting flash config chip
8 years ago
davor
85cb0b3f93
Placing 40-pin connectors side-by-side,
...
changing ft2232 to ft231x
8 years ago
davor
a7de1a4e58
power button
8 years ago
davor
4f3fabdb5f
oled updated on the schematic and PCB
8 years ago
davor
6639abded3
add 4 mounting holes
8 years ago
davor
b661cacede
Change to 2x20 pin headers, PCB layout currently sub-optimal
8 years ago
davor
f9ba6fa20b
chage ESP8266-12E to ESP32S
...
approximate (maybe incorrect) connections - need review
(programming esp from fpga, jtag, sd, chip enable)
8 years ago
davor
a0dae5bb6a
another diode to duscharge C14 at shutdown
8 years ago
Davor
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
davor
dc6ea57d67
Label button pullup net "BTNPU"
8 years ago
davor
23c4cde741
GPDI I2C 5V level shifter
8 years ago
davor
7fd0f561fc
Add SPI flash chip
8 years ago