Activity
From 12/29/2009 to 01/27/2010
01/27/2010
- 11:37 PM Bug #1032: Part Change
- http://mouser.com/ProductDetail/Atmel/AT45DB161D-SU/?qs=sGAEpiMZZMuJXIph4YZFJU7D9eQuNJm0pgTssCTreYg%3d
16Mbit flas... - 11:28 PM Task #1036 (Invalid): Doublecheck SDRAM footprint
- Went back to the BGA part because there was an error in that footprint
01/25/2010
- 12:21 AM Task #1047 (Fixed): Team Member Bios
- Make a sample bio for team members to list on www.colonyscout.com
Should describe (in 3rd person) a brief bio of eac...
01/23/2010
01/22/2010
- 06:42 PM Task #1046 (Fixed): Update BOM
- Lots of parts have changed.
- 05:26 PM Task #1045: Add a USB A port to the board on the host controller
- http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=AE10332-ND
- 05:22 PM Task #1045 (Fixed): Add a USB A port to the board on the host controller
- 05:20 PM Bug #1035 (Fixed): Redo decoupling caps on ARM
- 02:38 AM Bug #1035 (Fixed): Redo decoupling caps on ARM
- 05:07 PM Bug #1044: Choose a new rtc backup battery
- Using 2 diode drops. Schottky and standard diode -> .3 + .7 in the worst case leads to 2V which is a little dangerous...
- 04:30 PM Bug #1044: Choose a new rtc backup battery
- Wikipedia says that the typical capacity is 25mAh with our current draw of 5uA. This leads to about 208 days of runni...
- 04:18 PM Bug #1044: Choose a new rtc backup battery
- http://www.allspectrum.com/store/product_info.php?cPath=76_156&products_id=576&osCsid=f6ab02f15e80a8597fbd2cce9064f1f...
- 03:27 PM Bug #1044 (Fixed): Choose a new rtc backup battery
- We need to run on 1.8V
- 03:13 PM Task #1037: Put 50MHz oscillator on the ethernet phy chip
- Using this chip: http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=478-4792-1-ND
- 12:18 PM Task #1037: Put 50MHz oscillator on the ethernet phy chip
- The datasheet is wrong, its actually a 50MHz chip as they say everywhere else. Confired with the application note
- 03:06 AM Task #1037 (Fixed): Put 50MHz oscillator on the ethernet phy chip
- -http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=XC1433TR-ND-
- 03:34 AM Bug #1039 (Fixed): Tie oscsel to the RTC Battery
- 03:07 AM Task #1038 (Fixed): Modify Power supply
- * The ARM needs the voltages to be sequenced.
* Eliminated the 1.2V domain
- 02:39 AM Task #1036 (Invalid): Doublecheck SDRAM footprint
- The eagle part is mislabelled, just double check to make sure that using the "wrong" part is correct.
- 02:37 AM Bug #1032: Part Change
- All above parts won't work, the pitch is too small. New parts:
ARM AT91SAM http://search.digikey.com/scripts/DkSea... - 02:35 AM Task #1033 (Fixed): Email OneStopAssembly
- Assuming that they're actually advanced circuits, they can't do the small holes we needed.
01/21/2010
- 12:27 AM Bug #1032: Part Change
- not using the ARM, awaiting results to decide what ARM to use. Flash may change. SDRAM should remain constant.
- 08:14 PM Bug #1032 (Fixed): Part Change
- -New ARM: http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=568-4529-ND-
-New SDRAM: http://search.di... - 12:26 AM Task #1030 (Fixed): GoldPhoenix Quote
- about $40 / board for 4
- 12:26 AM Task #1033: Email OneStopAssembly
- sent, awaiting reply
- 11:38 PM Task #1033 (Fixed): Email OneStopAssembly
- Got a quote online, but only showed assembly cost
Email sales and ask for fab cost
http://onestopassembly.com/how...
01/20/2010
- 05:14 PM Task #976 (Fixed): Scoutfly Connectors
- 05:13 PM Task #1030 (Fixed): GoldPhoenix Quote
- Get a quote for the board with specs using the NXP ARM9
01/19/2010
- 02:31 PM Task #1023 (Fixed): Double check ARM Analog VDD supply voltage
- Should be tied to 3.3V
- 02:28 PM Bug #1022 (Fixed): Replace hex schmitt triggers with duals
- 02:16 PM Bug #1021 (Fixed): I2C Level shifter on the AVR I2C lines
01/18/2010
- 02:01 AM Task #1023 (Fixed): Double check ARM Analog VDD supply voltage
- There isn't one right now, check what it should be
- 01:53 AM Bug #1022 (Fixed): Replace hex schmitt triggers with duals
- http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=NL27WZ14DFT2GOSCT-ND
We're wasting space for the ...
01/17/2010
- 03:10 PM Bug #1021 (Fixed): I2C Level shifter on the AVR I2C lines
- Accelerometer runs at 3.3V, also there are currently no pullup lines
01/16/2010
- 04:02 PM Task #1018 (Fixed): Test motor backdrive
- Test how much power the motors can generate when driven by hand when the robot is off
- 04:02 PM Enhancement #1017 (Wontfix): Separate grounds
- We should have analog, chassis, and digital ground planes to limit noise around the board
- 04:01 PM Enhancement #1016 (Wontfix): ESD Protection
- Add ESD protection on any exposed pins to the board
- 04:00 PM Bug #988 (Fixed): Jumper on USB data line to ARM
- jumpered on the OTG PHY power lines instead so that the chip just won't power on unless the jumper is in place
- 02:47 PM Enhancement #1015 (Fixed): Resnets for LED arrays
- 11:31 PM Enhancement #1015 (Fixed): Resnets for LED arrays
- for the debug LEDs put on 13 element resnets
2K for the base: http://search.digikey.com/scripts/DkSearch/dksus.dll... - 12:22 AM Bug #1013 (Fixed): Circuit simulate LEDs
- updated resistor values and changed circuits for the leds accordingly
- 10:55 PM Task #969 (Fixed): Look for smaller ethernet connector
- 10:00 PM Bug #983 (Fixed): Add micro a/b usb-otg connector
- Used a different connector which is 100% smt. This one had tabs which I couldn't make in Eagle without hacks.
01/15/2010
- 05:09 PM Task #969: Look for smaller ethernet connector
- http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=553-1482-ND
Smaller but no LEDs so we need to ad... - 04:58 PM Bug #1005 (Fixed): Move pushbutton to ffc
- 04:58 PM Bug #1005: Move pushbutton to ffc
- Incorrect name. We actually are placing the button on the board. Using the standard smt pushbutton
- 12:37 AM Bug #1005 (Fixed): Move pushbutton to ffc
- It shouldn't have its own header
- 04:56 PM Bug #1013 (Fixed): Circuit simulate LEDs
- Make sure that we don't need resistors on the base and not blow the ARMs current limit
- 04:55 PM Bug #1004 (Fixed): Split power into input and output connectors
- Made two separate RA .1" headers. Broke everything up
- 12:35 AM Bug #1004 (Fixed): Split power into input and output connectors
- Put battery and charging on its own 4pin connector and 5v/3.3v/unreg/gnd/motors on a separate connector. Both 0.1" cg...
- 04:35 PM Enhancement #1003 (Fixed): Replace giant DPAK BJTs with a smaller one
- Used dual npn in a SOT223-8 package
- 12:34 AM Enhancement #1003 (Fixed): Replace giant DPAK BJTs with a smaller one
- Older DPAKs for current limiting the motors may have been oversized. These should be ok: http://search.digikey.com/sc...
- 12:32 AM Bug #988: Jumper on USB data line to ARM
- might be easier to do it on the power lines instead
- 12:32 AM Bug #983: Add micro a/b usb-otg connector
- http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=WM17143CT-ND
01/14/2010
- 12:58 PM Task #999 (Fixed): Colony III Members
- Define systems that need worked on
- Charging
- AVR (inputs, outputs) - 02:42 AM Bug #992 (Fixed): Pin out rest of AVR ADC
- 09:37 PM Bug #992 (Fixed): Pin out rest of AVR ADC
- 02:42 AM Bug #984 (Fixed): Add ffc connectors to the board to replace cgrids
- 08:07 PM Bug #984 (Fixed): Add ffc connectors to the board to replace cgrids
- 12:59 AM Bug #989 (Fixed): Test point on 2 test clocks on ARM
- 09:24 PM Bug #989 (Fixed): Test point on 2 test clocks on ARM
- 12:54 AM Task #987 (Fixed): Jumper on Power Kill Line
- 08:57 PM Task #987 (Fixed): Jumper on Power Kill Line
- Jumper between power kill and AVR
- 12:53 AM Bug #991 (Fixed): Remove AVR reset and replace with IO from ARM
- 09:36 PM Bug #991 (Fixed): Remove AVR reset and replace with IO from ARM
- 12:49 AM Bug #995 (Fixed): Put wireless amp enable lines on ARM
- 09:45 PM Bug #995 (Fixed): Put wireless amp enable lines on ARM
- PAEN to EN and send it to the ARM
- 12:48 AM Bug #994 (Fixed): Hook up Gyro PD and ST through level shifter to AVR
- 09:41 PM Bug #994 (Fixed): Hook up Gyro PD and ST through level shifter to AVR
- 09:51 PM Task #997 (Wontfix): Spec out microphone
- 09:40 PM Task #993 (Assigned): Look into accelerometer speed
- http://www.sparkfun.com/datasheets/Sensors/Accelerometer/ADXL345.pdf
- 09:32 PM Bug #990 (Invalid): TVS diode on motors
- 09:23 PM Bug #988 (Fixed): Jumper on USB data line to ARM
- 08:50 PM Task #986 (Fixed): Charging Station Fuse
- Opted to put a fuse in the charging station/system instead of the Scout.
- 08:25 PM Bug #981 (Fixed): Modify accessory ports
- 07:48 PM Bug #981 (Fixed): Modify accessory ports
- Add 1 ADC, remove second accessory port.
- 08:24 PM Bug #982 (Fixed): Add UART for the BOM
- 07:51 PM Bug #982 (Fixed): Add UART for the BOM
- 08:22 PM Bug #985 (Fixed): Add RX/TX UART pin bypass to the AVR for debugging
- 08:20 PM Bug #985 (Fixed): Add RX/TX UART pin bypass to the AVR for debugging
- 08:15 PM Task #968 (Fixed): Double-check Resistor Divider Values
- Fixed a reverse divider on the LDO
- 07:58 PM Bug #983 (Fixed): Add micro a/b usb-otg connector
01/13/2010
- 12:24 AM Task #967 (Fixed): Double-check IC Footprints
- 09:34 PM Enhancement #972 (Fixed): Replace RF chip crystal with smaller oscillator
01/12/2010
- 05:04 PM Task #978 (Assigned): System Wiring
- Formalize lengths, gauges, and organization of wiring for sensors and actuators. Signals should be transferred on the...
- 05:01 PM Task #976: Scoutfly Connectors
- This looks like a good, fairly low cost solution. Routing power/gnd separately is no problem.
- 02:09 PM Task #976: Scoutfly Connectors
- There are a lack of 40pin FFC connectors, the common sizes seem to be <= 30 pins. We can do 2 20-pin connectors to me...
- 11:42 AM Task #976 (Fixed): Scoutfly Connectors
- Find 40+pin FFC (flexible flat cable) connector and cable (4+" length)
Find as inexpensive as possible (<$5 ideal) - 11:59 AM Task #974: Accessory Ball Bearing
- Use bushing instead of bearing (overkill)
Low profile (3/8" thickness) flange not necessary, but is good if we hav... - 05:32 AM Task #974 (Fixed): Accessory Ball Bearing
- Add block for ball bearing and choose part
Recommend 0.250" ID, plain vanilla ball bearing (read: cheap) or use simp... - 05:34 AM Task #973 (Fixed): Share schematic + board on dropbox with dan
- 07:30 PM Task #973 (Fixed): Share schematic + board on dropbox with dan
- 05:34 AM Task #975 (Wontfix): Hood Buttons
- Once dev board layout is finalized (for dev), design buttons and determine placement on hood piece.
Buttons may be... - 08:32 PM Enhancement #971 (Fixed): Remove led bar and use individual LEDs instead
01/11/2010
- 10:57 PM Enhancement #972 (Fixed): Replace RF chip crystal with smaller oscillator
- http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=535-10013-1-ND
is 100 x 100 mils - 10:55 PM Enhancement #971 (Fixed): Remove led bar and use individual LEDs instead
- * red, green, same as the FTDI's
* Add 1 more of each so that we can fully utilize those pnps
- 10:55 PM Task #970 (Fixed): Find all resistors we need
- 0603 unless it can't withstand the power disspation
01/10/2010
- 04:06 PM Task #969 (Fixed): Look for smaller ethernet connector
- Current one takes up a significant amount of room on the board
- 03:59 PM Task #968 (Fixed): Double-check Resistor Divider Values
- Some may be reversed
- 03:59 PM Task #967 (Fixed): Double-check IC Footprints
- Some may be reversed
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