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Commit Graph

11 Commits

Author SHA1 Message Date
Werner Almesberger
4c905300d3 Minor CNTR layout cleanup.
- cntr.brd: added pin 1 marker for U1
- cntr.brd: moved via next to P7 a 5 mil away from the probe trace
- cntr.pro: commit noise
2010-11-06 17:14:25 -03:00
Werner Almesberger
b7eb4b9496 cntr/: version 3 with simplified input circuit.
- cntr/cntr.sch: change input circuit according to ECN0006
- cntr/cntr.sch: make P2_0 yet another version ID input
- cntr/cntr.cmp: surprise, this wasn't checked in either
- cntr/cntr.brd: update for above changes
- cntr/cntr.brd: adjust for resized USB connector
- cntr/cntr.brd: top ground fill was very spotty - removed it
- cntr/cntr.brd: board can now be 100 mil shorter
- cntr/cam/pcb.pl: updated for new board outline
2010-11-06 02:53:18 -03:00
Werner Almesberger
8cd7acd622 Use "standard" 2:1 pad to hole ratio for USB connector shield.
- modules/usb_a_plug_smt.fpd: increased pad to hole ratio from 1.5 to 2
- cntr/cntr.brd: updated layout to accommodate larger USB connector pads
2010-10-25 18:18:41 -03:00
Werner Almesberger
2ad54bf2e2 Cleaned up board outline and ground routing.
- cntr/cntr.pro, cntr/cntr.brd: reduced PCB edge line width from 15 mil to
   5 mil
- cntr/cntr.brd: make edge follow hole for MMCX connector
- cntr/cntr.brd: fill bottom and input area with ground
- cntr/cntr.sch, cntr/cntr.brd (R4): replace 0 Ohm jumper and GND via
  P2.1 with vias
2010-10-25 18:09:42 -03:00
Werner Almesberger
e9147b0ba9 Major redesign of "cntr" circuit.
- cntr/cntr.pro: added usb_a_plug.lib, mmcx-f-edge.mod, usb_a_plug_smt.mod,
  and sot-323.mod
- cntr/cntr.sch, cntr/cntr.brd: reassigned LED and pull GPIO for easier
  routing
- cntr/cntr.sch, cntr/cntr.brd: replaced mini-USB receptacle with USB A
  plug and removed 0 Ohm resistor previously used for swapping D+/D-
- cntr/cntr.sch, cntr/cntr.brd: changed TVSs on USB from 200 pF 0603 to
  100 pF 0402 type
- cntr/cntr.sch, cntr/cntr.brd: replaced basically unterminated 100 mil
  header with properly terminated MMCX connector
- cntr/cntr.brd: reduced board width (nominally 15.8 mm) to USB connector
  width (16 mm)
- modules/mmcx-f-edge.fpd: swap contacts for compatibility with "BNC"
  symbol
2010-10-25 08:44:41 -03:00
Werner Almesberger
57874cf5e2 Revert TVS size reduction. We're not ready for it yet.
- cntr/cntr.sch (VR1, VR2, VR3): reverted change to 0402, because this
  would be too difficult to route with current board
- cntr/cntr.sch (VR1, VR2, VR3): change voltage from 5.6 V to 5.5 V,
  for compatibility with selected part
- cntr/cntr.brd: updated for value change
2010-10-24 23:55:37 -03:00
Werner Almesberger
c1b7b81936 Added title, author, and revision to all schematics and layouts.
- atrf/wpan-atrf.sch, atrf/usb.sch, atrf/atrf.sch, atrf/wpan-atrf.brd: added
  title, author, and revision (100820)
- cntr/cntr.sch, cntr/cntr.brd: added title, author, and revision (1)
2010-08-25 19:42:46 -03:00
Werner Almesberger
81ab679fbd The parasitic capacitance of the three probe input pins and R1 formed a
quite formidable low-pass filter that almost completely eliminated the
1 MHz signal.

- cntr/cntr.sch, cntr/cntr.brd: changed R1 from 100k to 1k to increase
  input bandwidth
2010-08-25 06:36:02 -03:00
Werner Almesberger
9c2deb8e0a cntr/cntr.brd: remove the ground fill. The board got a bit messy with it.
Bumped the version to V1.
2010-08-23 00:52:23 -03:00
Werner Almesberger
51de2a5235 Forgot cntr/Makefile. Added ground fill.
- cntr/Makefile: oops, forgot to add this one to the repository
- cntr/cntr.brd: fill unused spaces with ground
2010-08-22 21:45:25 -03:00
Werner Almesberger
5553d3e75b New circuit: an arbitrary-precision counter.
- BOOKSHELF: added the C8051F320 (alias "f320")
- BOOKSHELF: added "atrf" alias for AT86RF230
- BOOKSHELF: added "f326" alias for C8051F326
- AUTHORS, components/INFO, components/c8051f320.lib,
  components/c8051f320.dcm: added Silabs C8051F320
- AUTHORS, modules/INFO, modules/Makefile, modules/qfp.fpd: added LQFP32
  for C8051F320
- cntr/cntr.pro, cntr/cntr.sch, cntr/cntr.brd: arbitrary-precision counter
2010-08-22 21:32:54 -03:00