7492a1feb6
schematics v3.0.5: connect FTDI_nRXLED to FPGA
6 years ago
88b9f29187
schematics 2.1.10: Flash pull up resistors R11 R12 R27 R28 15k -> 10k
6 years ago
74fbb486e6
schematics: updating LowCost fields
6 years ago
8d00300258
schematics v2.1.4: NOP change - placing NC marks on unused ADC pins
6 years ago
f4a6ec14a1
schematics v2.1.2: same as v2.1 with some cleanup NOP changes
6 years ago
2a32329299
schematics v2.1: cleanup some stray no-connect X's
6 years ago
ec948ee6b9
schematics v2.1: renaming diode PCB jumpers RD -> D
6 years ago
d7f9d45b19
schematics v2.0.10: some additional text notes, a NOP change
6 years ago
79e99bf474
schematics: Mark as NC all BGA pins which are NC in 12F FPGA chip.
...
So those pins can be recognized in PCB as having no net name.
Those pins may have use on other chips 25F, 45F or 85F but we
won't used those pins because the buard is designed to for
work for all.
6 years ago
1899935077
schematics v2.0.7
6 years ago
8ef7e6ed88
schematics v2.0.6: debouncing capacitor for B0
7 years ago
fac2994b7a
schematics v2.0.5: NOP change, comments about PROGRAMN not connected on v1.7
7 years ago
2f53029c68
schematics v2.0.4 signal USER_PROGRAMN
7 years ago
141dee5d80
schematics v2.0.3: Diode D28 for BTN0 to PROGRAMN wiring
7 years ago
c90665620d
schematics v2.0
7 years ago
0f35cf56a0
schematics v1.9.5: Noise filter for ADC (L4,C58,C59)
7 years ago
fb387cd68b
schematics v1.9.4: correct PN Y2 quartz 32768Hz/6pF and matching
...
load capacitance of 6pF with C56=C57=10pF for RTC MCP7904
7 years ago
2848d5220b
schematics v1.9.2: load capacitors for 32768 Hz quartz.
...
Depending on internal capacitance of quartz and RTC chip,
external capacitors are sometimes required (see RTC datasheet).
7 years ago
199df0e91a
schematics v1.9.1: U11 (i2c) VCC1=2.5V EN=3.3V for low power sleep
7 years ago
c1a232819f
schematics: v1.9
7 years ago
7cff1957a7
schematics v1.8.12
7 years ago
35455c3e96
schematics v1.8.11
7 years ago
83128ee79b
schematics v1.8.10: BOM fix for 4.7k resistors
7 years ago
49b3c44d0f
schematics: v1.8.9
7 years ago
2e47c55293
schematics v1.8.8
7 years ago
3d6aac6f9c
schematics v1.8.7: reconnecting SD card for 180 deg rotation
7 years ago
15e0e4bcad
schematics: drill holes Note: Leave empty
7 years ago
449eea2cd8
schematics v1.8.6: fixing RTC time loss issue with RC network
7 years ago
6b3e3451ea
schematics: v1.8.5
7 years ago
182103e923
schematics: v1.8.4
7 years ago
caf94acd59
schematics: v1.8.3
7 years ago
10e8e97633
schematics v1.8.2
7 years ago
323c7d78b7
schematics: hopefully getting rid of all references to micro-gpdi-d
7 years ago
853497d403
schematics: replace 45F chip with 85F
7 years ago
b006a34b71
schematics: C54 22uF for 3V RTC battery
7 years ago
3996e140ef
schematics: kicad 5 load and save
7 years ago
7b88b3baf1
schematics: v1.8 adding capacitor for 2.5/3.3V
7 years ago
9d1c3c6a2c
schematics: v1.7.16
7 years ago
db50639a60
schematics: 4 22nF capacitors for 2.5/3.3V and 3.3V near J1 and J2 connector
7 years ago
32bd7673a8
schematics: v1.7.14
7 years ago
ea96ac0d18
schematics: use non-handsoldering footprints for all 22nF and 100nF capacitors
7 years ago
8ff6e0e20e
schematics update, setting L1,L2,L3 all the same PN
7 years ago
b535b7ccee
schematics: references for buttons on previous PCB v1.7
7 years ago
2f3cc59274
schematics: adding mouser P/N
7 years ago
b205d52f4f
schematics: sprinkling 22nF decoupling capacitors under FPGA
7 years ago
a04b74cc61
schematics, footprints: micro usb cleanup
7 years ago
6079a51257
schematics: symbol for SDRAM copied from rescue to proper library
7 years ago
7caf7a4f5f
schematics: v1.7.9 SD card hopfully connected properly to ESP32 SD_MMC
7 years ago
fd6a0d3a2a
schematics: bump version to v1.7.8
7 years ago
08e107ae65
schematics: detach SD card connection from ESP32, it won't
...
boot when this is connected.
7 years ago
emard