App Profile: HeliTach
Android / Games / Puzzles
HeliTach
Installs:
Rating:
3.83
Total Reviews:
41
Top Countries:
DE, FR, AU
< $5k
/mo
< 5k
/mo
Reviews: What People Think About HeliTach
Flmgrip
Rating: 4/5
it works AS LONG as you have a rough idea what the headspeed should be... i compared it with my $80 visual tach... let's say the headspeed is 3000 RPM and you have the "estimated headspeed" set at 2300 or 3800 it will measure it right... if you set the "estimated headspeed" to 1000, it won't display right... so it works as long as you know what the headspeed should be (wich you should have a rough idea anyway...), still good to have a real tach, but this one will do it in a pinch... nice work, i don't feel i wasted my $4.- (i feel like i wasted my $80 on the "real" tach)
eggmcmuffinplz
Rating: 5/5
Sure beats an 80 dollar optical tach. Well worth the 4 bux, as it's spot on with all of my helis. Definitely something to show off at the field!
trickybit
Rating: 4/5
I bought this to support the author's attempts at making something for the hobby, and because I fly alone I hoped I could use it to tach my heli without a helper. I wasn't really expecting it to work very well, but it really does! I've done a few comparison tests with a SkyTach, and it's always been within 20 or 30 RPM. That makes it a very useful tool, as well as a pretty amazing novelty. Well executed, a good value.
About HeliTach
IMPORTANT: Make sure HeliTach has permission to use your device's microphone. It will ask the first time it's launched, but you can also change the setting in your device's privacy settings.
HeliTach is an acoustic tachometer for radio controlled helicopters. It works by recording an audio sample of the helicopter and using an algorithm to analyze the sound of the helicopter's blades or engine. HeliTach uses an FFT algorithm written by Stephan M. Bernsee of The DSP Dimension.
HeliTach has an "Electric" mode that listens to the sound of the blades and a "Nitro/Gas" mode that listens to the engine RPM to measure headspeed. The "Electric" mode can work with nitro/gas helicopters but not vice versa. Set the settings for the applicable mode, press "Measure Headspeed," and set the iPhone on the ground near the helicopter. Spool up and hover a few feet away from the iPhone to get a couple good measurements. The "History" tab shows all measurements taken in addition to the measurement displayed on the main tab.
HeliTach records and processes audio samples continuously until the user tells it to stop and displays the measurement with the highest value or strongest signal. It has been tested with 250, 450 and 500-size electric helicopters with success. The results have been verified by comparison to an optical tachometer.
I can't guarantee accurate results on all helicopters, nor can I be held responsible for personal injury or damage to your iPhone or helicopter.
Requires an external microphone for devices without one built in, e.g. an early model iPod Touch.
HeliTach is an acoustic tachometer for radio controlled helicopters. It works by recording an audio sample of the helicopter and using an algorithm to analyze the sound of the helicopter's blades or engine. HeliTach uses an FFT algorithm written by Stephan M. Bernsee of The DSP Dimension.
HeliTach has an "Electric" mode that listens to the sound of the blades and a "Nitro/Gas" mode that listens to the engine RPM to measure headspeed. The "Electric" mode can work with nitro/gas helicopters but not vice versa. Set the settings for the applicable mode, press "Measure Headspeed," and set the iPhone on the ground near the helicopter. Spool up and hover a few feet away from the iPhone to get a couple good measurements. The "History" tab shows all measurements taken in addition to the measurement displayed on the main tab.
HeliTach records and processes audio samples continuously until the user tells it to stop and displays the measurement with the highest value or strongest signal. It has been tested with 250, 450 and 500-size electric helicopters with success. The results have been verified by comparison to an optical tachometer.
I can't guarantee accurate results on all helicopters, nor can I be held responsible for personal injury or damage to your iPhone or helicopter.
Requires an external microphone for devices without one built in, e.g. an early model iPod Touch.
File size: 2202624
Launched countries: USAUCACNFRDEGBITJPKRRUARATBEBRCLCOCRHRCZDKDOECEGSVFIGRGTHKHUINIDIEILKZKWLBLTLUMOMYMXNLNZNOPKPAPEPHPLPTQAROSASGSKSIZAESLKSECHTWTHTRAEUYVEVNEELVNIPYMT
Minimum OS version: 8.0
Release Date: 1247889748000
Published by Jacob Niehus
Website url: http://www.helifreak.com/showthread.php?t=151335
Publisher country:
