Difference between revisions of "Talk:Other Hardware old"
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Comm board (talk | contribs) |
Comm board (talk | contribs) |
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== External pressure sensor board (altitude) == | |||
--[[User:Comm board|Comm board]] 07:46, 31 January 2007 (CET) | |||
Pressure Sensor: | Pressure Sensor: | ||
MPXA6115A | MPXA6115A | ||
| Line 5: | Line 8: | ||
Interface, 3.3V I2C interface, 100khz, attiny as alternative processor. | Interface, 3.3V I2C interface, 100khz, attiny as alternative processor. | ||
MCU pic12f675 or equivalent | * MCU pic12f675 or equivalent | ||
low cost op-amp (not rail2rail) | * low cost op-amp (not rail2rail) | ||
1Mhz voltage doubler | * 1Mhz voltage doubler | ||
Precision 5.0V ldo | * Precision 5.0V ldo | ||
1x pwm output and at the same time ADC input, 0-3.3V | * 1x pwm output and at the same time ADC input, 0-3.3V | ||
1x raw pressure sensor input, div 1.4 for 0-3.3V range (max resolution is 981 units), optional | * 1x raw pressure sensor input, div 1.4 for 0-3.3V range (max resolution is 981 units), optional | ||
1x offset adc input (raw-pwm_out)*gain(1000) | * 1x offset adc input (raw-pwm_out)*gain(1000) | ||
Internal temperature sensor for full temperature compensation outside the 0-70degr. range. | * Internal temperature sensor for full temperature compensation outside the 0-70degr. range. | ||
16 times oversampling | * 16 times oversampling | ||
Revision as of 23:46, 30 January 2007
External pressure sensor board (altitude)
--Comm board 07:46, 31 January 2007 (CET)
Pressure Sensor: MPXA6115A MPXH6115A
Interface, 3.3V I2C interface, 100khz, attiny as alternative processor.
- MCU pic12f675 or equivalent
- low cost op-amp (not rail2rail)
- 1Mhz voltage doubler
- Precision 5.0V ldo
- 1x pwm output and at the same time ADC input, 0-3.3V
- 1x raw pressure sensor input, div 1.4 for 0-3.3V range (max resolution is 981 units), optional
- 1x offset adc input (raw-pwm_out)*gain(1000)
- Internal temperature sensor for full temperature compensation outside the 0-70degr. range.
- 16 times oversampling