Package Downloads


AIM USB 4 released

13 November 2017

The new AIM USB 4 has been released! The new AIM USB is 100k feet capable and features 40 amp ejection transisters as well as a tinly 65mm x 25mm PCB size. The unit also includes a micro USB cable used with most modern phones.

AIM XTRA 2.02 released

25 January 2015

The new AIM XTRA 2.02 has been released. Included in the hardware upgrade is the MAX8Q GPS module - an incredibly accurate and sensitive GPS receiver. The new unit has much faster acquisition and improved lock!

read more »


Nicholas Sunderlin

05 August 2012

"We finally had a clear day and an FAA waiver for our launch yesterday. We launched an L1115. We were aiming for 10,000ft and got roughly 9600ft. We are Unbelievably happy with your AIM XTRA gps unit. Soon after launch we lost visual of the rocket into the clouds and never regained site of it. During the flight we continuously received data from the unit and tracked it. Due to the high winds we found it in a corn field about a mile away. Everything worked without a flaw. Attached is the kml and csv file obtained from the unit after recovery. We never lost signal and found it within 10 feet of the gps coordinates on the unit. I absolutely love this AIM XTRA. Nicholas Sunderlin - University at Buffalo"

Justin Gomersall

03 August 2012

"We launched today with the new 7.4v 800mah battery. The launch was perfect and the below graph confirms this."

read more »

AIM USB Rocket Altimeter

The AIM USB provides flight recording and recovery in one, and is used in model rocketry and other novel applications. No data kit is required - just connect directly with USB!

Shipping via registered airmail - Only $115!

Purchased the AIM USB and looking for information?

Your AIM USB altimeter includes the ability to have its onboard software (firmware) upgraded by the user from his or her PC. Your altimeter includes the latest firmware available when shipped.

Because software changes can lead to different behaviour, we have to make sure you get the correct manual corrosponding to the firmware loaded onto your device.
We have included everything nescesary for you to get started in a convenient "package".

A list of downloads is availble on the left menu.

Features (AIM USB 3.0)

  • Small form factor: 70mmx25mmx15mm (L x W x H).
  • Pressure sensor with 30 cm (1 foot) resolution.
  • Integrated temperature sensor.
  • Battery input from 3.7V to 12V
  • Can run off a single Lithium polymer battery cell (3.7 V).
  • Lower current draw (14 mA)
  • Maximum MSL value of 11,770 meters (38,615 feet).
  • Completely self powered when connecting to a PC or laptop.
  • Two high current (6 amp) lines for firing ejection charges.
  • Component free underside - simpler to install.
  • Data
    • output status
    • continuity
    • battery voltage
    • temperature
  • Ejection settings
    • Apogee
    • Time
    • Accent altitude
    • Decent altitude
    • Peak velocity
  • Peak velocity ejection option (great for staging!).
  • Time delay options on both lines (for redundancy and other special requirements).
  • Adjustable line firing time for both ejection lines (you can now control an electric motor etc. for a given time).
  • Minimum battery voltage alarm settings. Now you can set your altimeter up for any battery type!
  • Completely upgradable firmware, making sure you always have the latest!
  • Least squares apogee detection.
  • Over 30 minutes of total flight time!
  • Connect to a PC or laptop to download flight profiles and modify settings.
  • Data stored at 0.1 second intervals in non-volatile flash memory.
  • Continually records output status, continuity, battery voltage and temperature.
  • Imperial or metric beep-out of altitude after launch.
  • Free custom designed software for downloading data and chaning settings.
  • No data kit required - connect directly to the altimeter with a mini-USB cable (not included).

Firmware and software upgrades

Please download the latest "package" for your device on the left. If you dont know your "bootloader" version, just select the latest version and the software will tell you if you have an older bootloader.

Upload and comapre!

Upload your flight profiles to the site where you will be able to compare your flights to others!

Screen-shots from the interfacing software (v 2.00)

Click on the images to enlarge them.

  Settings   Download   Flight
AIM USB settings

The AIM USB has many settings which can all be modified using software.
AIM USB download

This image shows the download screen, where data can be downloaded, viewed and saved from.
AIM USB flight

Here you can see the data downloaded from the altimeter. Velocity is calculated based on the slope of the altitude graph. You can also see when the ejection lines were activated (red and blue bars).