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PaxInstruments
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t400-electronics
Electronics for the Pax Instruments T400 temperature datalogger
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Create a BoM
#69
charlespax
closed
9 years ago
2
Add both QFN and TQFP footprints for the 32u4
#68
mhenstell
closed
9 years ago
9
Remove humidity sensor
#67
charlespax
closed
10 years ago
1
Remove pressure sensor
#66
charlespax
closed
10 years ago
1
Pressure sensor seems warm
#65
charlespax
closed
10 years ago
1
Open Source Hardware Logo
#64
Tsillen
closed
10 years ago
6
Make charge led viewable from outside of the case
#63
Tsillen
closed
10 years ago
1
Does the pressure sensor work?
#62
charlespax
closed
10 years ago
1
Does the humidity sensor work?
#61
charlespax
closed
10 years ago
1
Is the logging start/start button on a hardware interrupt pin?
#60
charlespax
closed
9 years ago
3
Properly ground isothermal plane
#59
charlespax
closed
9 years ago
7
Ruggedize
#58
charlespax
closed
9 years ago
8
LCD backlight is blueish
#57
charlespax
closed
9 years ago
1
Removing solder resist top and bottom of via
#56
charlespax
closed
9 years ago
7
Use through hole MicroUSB connector
#55
charlespax
closed
10 years ago
2
Make test jig for production
#54
charlespax
opened
10 years ago
1
Does the thermocouple filtration circuit affect the ADC readings?
#53
charlespax
opened
10 years ago
16
Remove board outline from silkscreen
#52
charlespax
closed
10 years ago
2
Move LCD connector
#51
charlespax
closed
9 years ago
1
Make LCD cable indentation
#50
charlespax
closed
9 years ago
6
Remove LCD cable slot
#49
charlespax
closed
9 years ago
1
Move components to the LCD side
#48
charlespax
closed
9 years ago
4
Use round ICSP pads
#47
charlespax
closed
10 years ago
1
Does the BL-5C have internal protection?
#46
charlespax
closed
9 years ago
2
Put the microcontroller in sleep state to save power
#45
Tsillen
closed
10 years ago
2
Can the MIC5219-3.3V be used as a reference voltage?
#44
charlespax
closed
9 years ago
4
What are the effects of input voltage on the 32u4 internal reference voltage?
#43
charlespax
closed
9 years ago
11
Does there need to be a voltage divider for the battery voltage measurement?
#42
charlespax
closed
10 years ago
3
Does there need to be a fuse on the battery?
#41
charlespax
closed
10 years ago
3
Is TEMP_INT connected to an interrupt pin?
#40
charlespax
closed
10 years ago
1
Is the resistor inline with LCD_BL necessary?
#39
charlespax
closed
9 years ago
1
Add ground test hook
#38
charlespax
closed
9 years ago
5
What test points are needed?
#37
charlespax
closed
9 years ago
9
Reduce off state power draw
#36
charlespax
closed
9 years ago
2
Provide attribution
#35
charlespax
opened
10 years ago
3
Use a 12-bit ADC
#34
charlespax
closed
10 years ago
6
Solder paste on isothermal plane
#33
charlespax
closed
9 years ago
1
Add a voltage reference
#32
charlespax
closed
9 years ago
2
How much power does the T400 draw?
#31
charlespax
opened
10 years ago
2
Add microcontroller to handle SD card
#30
charlespax
closed
9 years ago
3
Add jumper for current testing
#29
charlespax
closed
9 years ago
3
Isothermal plan floating
#28
charlespax
closed
10 years ago
1
Pax Instruments logo missing
#27
charlespax
closed
9 years ago
6
Power button must be active while flashing
#26
charlespax
closed
10 years ago
1
Break out more lines to header
#25
charlespax
closed
9 years ago
3
Battery blocks SMT header
#24
charlespax
closed
9 years ago
2
Add breakout on LCD side
#23
charlespax
closed
10 years ago
1
LCD connector solder issues
#22
charlespax
closed
9 years ago
1
Gold plate the board
#21
charlespax
closed
9 years ago
1
Charge status LEDs
#20
charlespax
closed
10 years ago
1
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