This makes sure that the origin aligns with the top left corner of the
board when importing the PCB using FreeCAD KiCadStepUp.
Signed-off-by: Stefan Agner <stefan@agner.ch>
2.2uF/100V are not really available in a 0805 package. This part of
the PoE design a 25V rating is sufficent.
Fixes: #22
Signed-off-by: Stefan Agner <stefan@agner.ch>
- Add multiple ventilation slots (move some traces for space)
- Add Home Assistant logo to the back
- Add Nabu Casa logo on the front
- Fixup reference designators placement in several cases
Signed-off-by: Stefan Agner <stefan@agner.ch>
Order some relevant reference designator. Use JP for all jumpers. Place
silkcreen neatly. Add some custom silk screen. Remove heat sink corner
marks on silk screen.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Changes:
Footrints:
-Modified DC Jack to accomodate CUI PJ-002A
-Modified RJ45 to increase clearance between shield and poe pins
-Modified m.2 mounting pads to avoid drc errors
Schematic:
-usb-c facing usb mux is supplied by +3v3VP
-added misc. capacitors
PCB
-min. annular ring for vias set to 0.125 from 0.2
Signed-off-by: Dominik Sliwa <dominik@sliwa.io>
Use JLC7628 impedance values to get more options in color selection.
Also this leads to slightly wider traces typically, and it will be
easier to switch back to JLC2313 or the like than the other way around.
Also swap placing of HDMI/SW2 and rotate the heatsink by 90° for easier
routing.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Change the length and positioning of the buttons and start layouting a
bit. Move components where needed.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Use minimal track width/gap of 0.127mm. Use impedance calculated using
the JLCPCB calculator for the 85Ohm/90Ohm differential pairs and 50Ohm
single trace.
For the 100Ohm pair the JLCPCB calculator does not allow to specify a
track gap which leads to a track width of 0.127mm or bigger. Hence for
this I used https://www.mantaro.com/resources/impedance-calculator.htm
(with Er 4.05, h 0.095, t 0.035).
Also use vias of 0.45/0.2mm by default.
Fixes: #6
Signed-off-by: Stefan Agner <stefan@agner.ch>
The current M2.5 holes work well for the soldered nuts from JAE
(SM3ZS067U310-NUT1-R1800). However, we are going to use a custom
standoff with a M2 thread (nut) and a screw to mechanically secure the
NVMe. The nut will have a border to fit the hole. That the standoff
still can fit a M2 thread we need M3 holes.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Adjust some high level placement like M.2 or CM4 and heatsink. Remove
all traces and vias since most of the layouting has to be redone
anyways.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Instead of using VBUS to power CP2102N use the main/NVMe 3.3V supply.
This makes sure that the device stays powered during reset, while making
sure the CP2102N is always powered and doesn't backfeed if no USB is
plugged in.
Signed-off-by: Stefan Agner <stefan@agner.ch>
- Replace unusual/high value ceramics with lower value in parallel
- Use the same protection Shottky Diode in PoE as in regular input
(B340LB-13-F)
- Replace PoE rectifier Diodes with B1100-13-F
- Replace PoE Inductor (SRN6045TA-3R3Y) with the same part from 5V power
supply (Taiyo Yuden NRS8030T3R3MJGJ)
- Correctly specify Pulse Electronics transformer
Signed-off-by: Stefan Agner <stefan@agner.ch>
- Use Diodes B2100-13-F consistently
- Define part for pin headers
- Replace N-Channel MOSFET for PoE with BSZ440N10NS3GATMA1
- Define Input protection MOSFET DMP3013SFV-7
Signed-off-by: Stefan Agner <stefan@agner.ch>
Remove power/reset/recovery switch. Power and reset is not really required
and recovery mode (USB Boot) can be triggered via jumper. Make the Fan
and RPiLED a new separate config so we can leave them unpopulated. Add a
second GPIO controlled switch.
Fixes: #16
Signed-off-by: Stefan Agner <stefan@agner.ch>
The Rohm has a lower current rating and input voltage range, but should
be good enough for our use case. It has better availability and is quite
a bit cheaper than the Diodes part. This also requires different
inductors and some different resistor values.
Fixes: #12
Signed-off-by: Stefan Agner <stefan@agner.ch>
Use a jumper instead of a switch to change between CM4 USB Device and
CP2102N. Replace CP2102N QFN24 with QFN20 variant. Make CP2102N to be
bus-powered by default.
Fixes: #7
Signed-off-by: Stefan Agner <stefan@agner.ch>
Use a through hole 3.5mm Audio jack to make sure it does nto get teared
off the board accidentially that easily.
Fixes: #9
Signed-off-by: Stefan Agner <stefan@agner.ch>
Make sure those signals are well defined even when not be driven from
the CM4 side. Also rename Radio.BOOT to Radio.~BOOT since its a low
active signal.
Fixes: #10
Signed-off-by: Stefan Agner <stefan@agner.ch>
CRFILT capacitor is required for the chip to start properly
and 10k pull-downs were too strong according to the datasheet.
Signed-off-by: Dominik Sliwa <dominik@sliwa.io>
