This versatile, easy to use altimeter audibly reports your rocket``s peak altitude and maximum velocity after flight via a sequence of beeps. Two outputs are provided for deploying a small chute at apogee to minimize drift and a larger chute closer to the ground to slow your rocket for a gentle touchdown. Main chute deployment altitude is adjustable from 100 feet to 9,999 feet in 1 foot increments with the computer interface or 100 foot increments without. Nine user-defined presets make changing the settings in the field quick and easy.

The StratoLogger collects flight data (altitude, temperature, and battery voltage) at a rate of 20 samples per second throughout the flight and stores them for later download to a computer. It retains data from the most recent 31 flights (up to 9 minutes per flight) even with power removed. The optional DT3U data transfer kit includes software for graphing and printing a wide range of characteristics including altitude, velocity, and more.

As its name implies, the StratoLogger is capable of recording flights of up to 100,000 foot altitude (well into the stratosphere) with industry-leading precision and accuracy.

Features

• Works to 100,000 feet MSL, audibly reports peak altitude and maximum velocity after flight.
• Stores 31 flights of 9 minutes each (altitude, temperature, and battery voltage at 20 samples per second) for download to a computer with the optional DT3U USB interface. Data are preserved with power off.
• Deploys drogue and main chutes with audible ematch continuity check.
• Outputs capable of 10A current for 1 full second to allow use with nearly any ematch or ematch substitute. Reverse polarity protection prevents spontaneous firing if battery is connected backwards.
• Main chute deployment altitude is adjustable from 100 feet to 9,999 feet in 1 foot increments. 9 presets allow for quick change in the field.
• No mach delay necessary for mach+ flights: Automatic MachLock assures proper operation with any flight.
• Brownout protection will tolerate 3 second power loss in flight - no need for multiple batteries.
• Precision sensor &;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 24 bit ADC yield superb 0.1% accuracy.
• Built-in voltmeter reports battery voltage on powerup - no more guessing about battery condition.
• Audio connector for optional amplified external beeper or LED.
• Post flight locator siren aids in locating your rocket. Especially useful when combined with amplified external beeper.
• Confusion-free individual terminal blocks - unreliable multiple wires per terminal are not necessary.
• Pressure sensor is immune to false triggering from exposure to sunlight.
• Highly resistant to false trigger from wind gusts tested in 100+ MPH winds!
• Selectable apogee delay for dual altimeter setups prevents overpressure from simultaneous charge firing.
• Low power design runs for weeks on a standard 9V alkaline battery. Post- flight locator siren will run for months, giving you multiple "second chances" to find a lost rocket.
• Telemetry output for real-time data in flight with your RF link.
• Rugged SMD construction, stringent QC testing, and internal self-diagnostics assure uncompromising reliability.
• Wide operating temperature range of -40F to +185F.
• Measures just 2.75"L x 0.9"W x 0.5"H, fits 24mm tube, weighs just 0.45 oz.
• Backed by full three year warranty.

A peanut-sized altimeter with super-sized features! This tiny, easy to use altimeter audibly reports your rocket``s peak altitude and maximum velocity after flight via a sequence of beeps. A post-flight warbling siren sound makes finding small rockets in tall grass easier.

The Pnut collects flight data (altitude, temperature, and battery voltage) at a rate of 20 samples per second throughout the flight and stores them for later download to a computer. It retains data from the most recent 31 flights (up to 9 minutes per flight) even with power removed. The optional DT3U data transfer kit includes software for graphing and printing a wide range of characteristics including altitude, velocity, and more.

Despite its small size and low price, the Pnut is capable of recording flights of up to 100,000 foot altitude with industry-leading precision and accuracy.

A built-in Lithium Polymer rechargeable battery will run the Pnut for up to 100 hours between charges.

Features

• Works to 100,000 feet MSL, audibly reports peak altitude and maximum velocity after flight.
• Stores 31 flights of 9 minutes each (altitude, temp­;;;;erature, and battery voltage at 20 samples per second) for download to a computer with the optional DT3U USB interface. Data are preserved with power off.
• No mach delay necessary for mach+ flights: Automatic MachLock assures proper operation with any flight.
• Built-in rechargeable Lithium Polymer battery.
• Precision sensor &;;;; 24 bit ADC yield superb 0.1% accuracy.
• Built-in voltmeter reports battery voltage on powerup –;;;; no more guessing about battery condition.
• Post flight locator siren aids in locating your rocket.
• Pressure sensor is immune to false triggering from exposure to sunlight.
• Highly resistant to false trigger from wind gusts;;;;;;;; tested in 100+ MPH winds!
• Low power design runs for days on a single charge. Post-flight locator siren will run for up to two weeks, giving you multiple “;;;;second chances”;;;; to find a lost rocket.
• Telemetry output for real-time data in flight with your RF link.
• Rugged SMD construction, stringent QC testing, and internal self-diagnostics assure uncompromising reliability.
• Wide operating temperature range of 14F to +140F.
• Measures just 2.5"L x 0.59"W x 0.45"H, fits 18mm tube, weighs just 0.26 oz. including battery.
• Backed by full three year warranty.

The APRA is an entry-level altimeter that doesn’;;;;;;;;;;;;;;;;;;;;;;;;t compromise on accuracy and capability despite its low price. It is small, easy to use, and audibly reports your rocket``s peak altitude and maximum velocity after flight via a sequence of beeps. A post-flight warbling siren sound makes finding small rockets in tall grass easier.

Features

• Works to 100,000 feet MSL, audibly reports peak altitude and maximum velocity after flight.
• No mach delay necessary for mach+ flights: Automatic MachLock assures proper operation with any flight.
• Uses common type A23 12 volt battery (included).
• Precision sensor &;;;;;;;;;;;;;;;;;;;;;;;; 24 bit ADC yield superb 0.1% accuracy.
• Built-in voltmeter reports battery voltage on powerup –;;;;;;;;;;;;;;;;;;;;;;;; no more guessing about battery condition.
• Post flight locator siren aids in locating your rocket.
• Pressure sensor is immune to false triggering from exposure to sunlight.
• Highly resistant to false trigger from wind gusts;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; tested in 100+ MPH winds!
• Low power design –;;;;;;;;;;;;;;;;;;;;;;;; battery lasts for over 30 hours. Post-flight locator siren will run for several days, giving you multiple “;;;;;;;;;;;;;;;;;;;;;;;;second chances”;;;;;;;;;;;;;;;;;;;;;;;; to find a lost rocket.
• Rugged SMD construction, stringent QC testing, and internal self-diagnostics assure uncompromising reliability.
• Wide operating temperature range of 40F to +185F.
• Measures just 2.75"L x 0.55"W x 0.62"H, fits 18mm tube, weighs just 0.56 oz. including battery.
• Backed by full three year warranty.

This data transfer kit incorporates level shifting and USB conversion circuitry to make the logic level signals from the altimeter compatible with standard USB ports. It also includes a USB A to USB mini B cable to connect to the host computer.

The included Pnut and StratoLogger software will transfer the data from the altimeter to your computer, save it to a disk file, and plot/print altitude, velocity, voltage, and temperature curves. Comments can be added and are saved/printed along with the data. The software can also be used to setup/configure changeable parameters within the altimeter and is compatible with Mac OS X and Windows XP, Vista, and 7.