Eggtimer Rocketry Eggtimer User Manual page 53

Appendix E - Specifications
Pressure Sensor:
Type Bosch BMP-85/180, accuracy rated to approx. 9000 m (29,500 ft)
Accuracy Approx 1m (3 ft) throughout rated pressure range
Precision Approx ½ m (1.5 ft) throughout rated pressure range
Processor
Type Atmel ATMega328P
Speed 16 MHz
Memory
Type I2C Serial EEPROM
Size 64KB (512 Kb)
Deployment
Voltage 3v-60v
Current 8A max, 60 W
Isolation > 3000V (opto-isolator)
Duration 1-9 seconds, or continuous
Output On, or pulse-width-modulated output for analog servos
Servo PWM 0.5-2.5 ms ( selectable +/- 100 ms pulse width increments)
AUX Channels (3) 3v-4v at 20 mA max (logic-level outputs)
Size Approx 3.9" L x 1.05" W x .5"H
Weight Approx 20 grams
Power
Voltage 3-4v nominal
Current Draw
Reset Mode Approx 2 ma
Operational Approx 8 ma
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