The BaroMod atmospheric air pressure sensor

The explosion in microchips, robotics, and sensing has taken a new twist.........The Transolve BaroMod altitude sensor.

Projects you never even considered doing are now possible.

Determine the height of your kite, balloon, plane, rocket, or other aero-vehicle, and easily input to any popular microcontroller board (10 bit a/d suggested, see basicx.com module) or homebrew/commercial telemetry rig.

As a simple test, you can just read the BaroMod 0-5V output signal (0.25mV/ft) on a DVM as you walk up the stairs in a building (or take the elevator!).

Besides realtime altitude reporting, data logging is popular, as in flight recorders. An update rate of up to 100 Hz can be employed. Some rocket altimeters sample this fast, while a balloon logger would be much slower.

Let your imagination run wild. Consider a sailplane variometer, an audio "growler" tone changes frequency to indicate rate of climb/descent, whether you are in a thermal. The BaroMod eliminates the whole front end problem of the variometer.

How about flying a balloon at night? A basic module could flash the altitude in pulses with superbright LED's! Talk about a winning science fair project.....

Model planes are a prime application, altitude determination is valuable in competition and record attempts, and refining aerodynamic performance, airfoil, lift to drag ratio, propulsion efficiency, etc. Logging or telemetering data can be a fun and useful way to optimize your aircraft design.
  • The BaroMod allows easy altitude measurement using any 0-5V analog electronics or embedded processor, with at least a 10 bit a/d converter.
  • An anti-log amp is used to create a linear response. No complex software math is required to process sensor signal, freeing up computer for logging or telemetry tasks.
  • Typical usage with 10 bit a/d will yield 20' measurement steps, good for general purpose application. Higher res is ok.
Size: 2.05" x 1.15" x 0.65"
Weight: 17 grams
DC Supply: 5V
Range: -500' below sea level to 20,000'
Output: 0-5V linear, proportional response, 0.25mV/ft.
Modes: absolute,differential (subtract ground reading)
Temperature Range: -40 to 200 deg. F
Typ. usage: Feeding to 10 bit a/d results in 20' increments

Price - US$38 + $5 ship (U.S. only, other send email enquiry)
Transolve has been building electronic altimeters since 1990, our calibration is traceable to FAA grade references. Give us a try, our support services are second to none.