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Odakyu-sen
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PostPosted: Thu May 18, 2017 12:57 pm    Post subject: Skybean helmet vario to augment weak Digifly Leonardo sound Reply with quote #1   
Does anyone have any experience with the Skybean helmet vario? http://www.skybean.eu/
My old Digifly Leonardo's sound output has become too faint. Compered with other Leonardo's on the same settings, mine has only half the volume. (I replaced the 2-cm piezo disc speaker, but to no avail.). There must be a problem in the circuitry.
I am thinking about getting a Skybean (not the Skydrop) to provide me with an audio signal that I can clearly hear. (I will continue to use my Leonardo as well.) Does anyone have any suggestions or useful comments?


Last edited by Odakyu-sen on Thu May 18, 2017 1:49 pm; edited 1 time in total
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Nathan F.



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PostPosted: Thu May 18, 2017 1:39 pm    Post subject: Reply with quote #2   
I have been using a Skybean as my only vario for the past year. I have been very happy with it. I normally fly with it turned off, but it is easy to turn on in flight and is nice to have it available when desired. It is very easy to use and unobtrusive mounted on my helmet. The volume and sensitivity are adjustable.
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mrcc
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PostPosted: Thu May 18, 2017 3:03 pm    Post subject: Reply with quote #3   
Brand New Flytec 6030 will successfully​ solve the problem thumbsup
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Odakyu-sen
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PostPosted: Thu May 18, 2017 3:39 pm    Post subject: Reply with quote #4   
mrcc wrote:
Brand New Flytec 6030 will successfully​ solve the problem thumbsup


My Digifly Leonardo works just fine, except for the strength of the tone.

I am looking at a XC Soar/Kobo tablet combination (that will show airspace boundaries) as a future replacement for my aging Leonardo, but that's another issue.
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red
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PostPosted: Thu May 18, 2017 3:51 pm    Post subject: Re: Skybean helmet vario to augment weak Digifly Leonardo so Reply with quote #5   
Odakyu-sen wrote:
My old Digifly Leonardo's sound output has become too faint. Compered with other Leonardo's on the same settings, mine has only half the volume. (I replaced the 2-cm piezo disc speaker, but to no avail.). There must be a problem in the circuitry. Does anyone have any suggestions or useful comments?
Odakyu-sen,

I see a manual, PC software, and a firmware update on their web page. Nothing there will help?

Piezo speakers come in many sizes and varieties. Maybe a better version of that piece of hardware is needed there. Alternately, a small plastic cone (mini-megaphone) around the speaker may be able to direct more sound to you (in a useful direction, that is) rather than a "broadcast" style of sound that wastes sound power in unwanted directions. Good hunting, there . . .

Mr. Green

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Odakyu-sen
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PostPosted: Thu May 18, 2017 5:28 pm    Post subject: Re: Skybean helmet vario to augment weak Digifly Leonardo so Reply with quote #6   
red wrote:


Piezo speakers come in many sizes and varieties. Maybe a better version of that piece of hardware is needed there. Alternately, a small plastic cone (mini-megaphone) around the speaker may be able to direct more sound to you (in a useful direction, that is) rather than a "broadcast" style of sound that wastes sound power in unwanted directions. Good hunting, there . . .

Mr. Green


I contacted Digifly directly, but they advised that I buy a 20-mm piezo disc speaker locally, as it wasn't worth the expense of postage from Italy to New Zealand. I bought a couple of 20-mm piezo speakers locally. They have to be 20-mm to fit into the speaker mounting in the instrument case (which functions as a sounding board to amplify the speaker output).

I really like my Digifly Leonardo, but its beep is too faint. (It wasn't always like that.) In a couple of years I'll get a more modern vario that can show airspace boundaries. This is a stopgap measure.

A couple of years ago I updated the Firmware to Ver. 66.1 (2011) which is the latest.
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jheissjr
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PostPosted: Thu May 18, 2017 8:08 pm    Post subject: Reply with quote #7   
Can you post a picture of the internal main circuit board?
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Odakyu-sen
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PostPosted: Thu May 18, 2017 8:27 pm    Post subject: Reply with quote #8   
jheissjr wrote:
Can you post a picture of the internal main circuit board?

The board components are on the inner site of the board. What are you looking for, by the way?
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jheissjr
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PostPosted: Fri May 19, 2017 11:56 am    Post subject: Reply with quote #9   
Seeing the audio area on the board may be helpful to find the problem.
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red
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PostPosted: Fri May 19, 2017 3:44 pm    Post subject: Re: Skybean helmet vario to augment weak Digifly Leonardo so Reply with quote #10   
Odakyu-sen wrote:
red wrote:
Piezo speakers come in many sizes and varieties. Maybe a better version of that piece of hardware is needed there.

I contacted Digifly directly, but they advised that I buy a 20-mm piezo disc speaker locally, I bought a couple of 20-mm piezo speakers locally. They have to be 20-mm to fit into the speaker mounting in the instrument case (which functions as a sounding board to amplify the speaker output).
Odakyu-sen,

Ummm . . . Not quite what I had in mind. Find a larger (louder) piezo speaker, and mount it externally, over the hole where the speaker should be. Ring it with clear epoxy to secure it in place, and to "fair" it slickly into the case. Piezo speakers usually won't be helped much by sounding boards.

One grain of sand in a piezo speaker can reduce or eliminate the sound from that speaker. Try tapping the case near the speaker as it is sounding off steadily, and you hold the unit at all possible angles. If sand is the problem, once you tilt and tap at the right angles, the sound level should become normal again. If that happens, glue a piece of fine silk over the speaker opening to keep sand out in the future.

Mr. Green

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Odakyu-sen
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PostPosted: Fri May 19, 2017 8:01 pm    Post subject: Re: Skybean helmet vario to augment weak Digifly Leonardo so Reply with quote #11   
red wrote:


Ummm . . . Not quite what I had in mind. Find a larger (louder) piezo speaker, and mount it externally, over the hole where the speaker should be. Ring it with clear epoxy to secure it in place, and to "fair" it slickly into the case.

Mr. Green


I might try that. The trick will be to find a louder speaker. $5 for a speaker would be a lot cheaper than $120 for a helmet vario.
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red
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PostPosted: Fri May 19, 2017 8:29 pm    Post subject: Re: Skybean helmet vario to augment weak Digifly Leonardo so Reply with quote #12   
Odakyu-sen wrote:
red wrote:
Ummm . . . Not quite what I had in mind. Find a larger (louder) piezo speaker, and mount it externally, over the hole where the speaker should be. Ring it with clear epoxy to secure it in place, and to "fair" it slickly into the case.
I might try that. The trick will be to find a louder speaker. $5 for a speaker would be a lot cheaper than $120 for a helmet vario.
Odakyu-sen,

Probably fair to add, don't try to blow the sand out of a piezo speaker with your breath, or compressed air. You might just make things worse that way. Tilting and tapping (while the speaker is sounding) should do the job.

Mr. Green

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Comet
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PostPosted: Fri May 19, 2017 11:53 pm    Post subject: Reply with quote #13   
Does it have an earphone jack? Bypass the speaker and run the earbud straight into your ear.
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Odakyu-sen
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PostPosted: Sat May 20, 2017 1:54 am    Post subject: Reply with quote #14   
Comet wrote:
Does it have an earphone jack?


I wish!
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Odakyu-sen
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PostPosted: Tue May 23, 2017 12:55 am    Post subject: Reply with quote #15   
I solved the problem. I bought a bigger (3 cm-diameter) piezo speaker and mounted it on the top of my vario.
The sound is significantly louder and will solve my problem.



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red
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PostPosted: Tue May 23, 2017 2:02 am    Post subject: Skybean helmet vario to augment weak Digifly Leonardo sound Reply with quote #16   
Odakyu-sen wrote:
I solved the problem. I bought a bigger (3 cm-diameter) piezo speaker and mounted it on the top of my vario. The sound is significantly louder and will solve my problem.
Odakyu-sen,

You can reduce the sound level of a larger piezo speaker with a piece of electrical tape, sealed over the hole. Pierce the tape with a red-hot needle once or twice, to let out the desired level of sound.

Mr. Green

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Odakyu-sen
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PostPosted: Tue May 23, 2017 2:38 am    Post subject: Re: Skybean helmet vario to augment weak Digifly Leonardo so Reply with quote #17   
red wrote:
Odakyu-sen wrote:
I solved the problem. I bought a bigger (3 cm-diameter) piezo speaker and mounted it on the top of my vario. The sound is significantly louder and will solve my problem.
Odakyu-sen,

You can reduce the sound level of a larger piezo speaker with a piece of electrical tape, sealed over the hole. Pierce the tape with a red-hot needle once or twice, to let out the desired level of sound.

Mr. Green


Naaaah. I'll use sand to solve the problem naturally. Here in NZ on the West Coast the sand is black (iron sand). If you stick a magnet in the sand, it will pick the same up like iron filings. You can imagine what this stuff does to piezoelectric speakers.

https://www.youtube.com/watch?v=c-BuhqHhDI8
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red
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PostPosted: Tue May 23, 2017 4:04 am    Post subject: Re: Skybean helmet vario to augment weak Digifly Leonardo so Reply with quote #18   
Odakyu-sen wrote:
red wrote:
Odakyu-sen wrote:
I solved the problem. I bought a bigger (3 cm-diameter) piezo speaker and mounted it on the top of my vario. The sound is significantly louder and will solve my problem.
You can reduce the sound level of a larger piezo speaker with a piece of electrical tape, sealed over the hole. Pierce the tape with a red-hot needle once or twice, to let out the desired level of sound.
Naaaah. I'll use sand to solve the problem naturally. Here in NZ on the West Coast the sand is black (iron sand). If you stick a magnet in the sand, it will pick the same up like iron filings. You can imagine what this stuff does to piezoelectric speakers.
Odakyu-sen,

Any grain of sand can reduce the sound coming from a piezoelectric speaker, but there are no magnets in a piezoelectric speaker. Often you can tilt and tap the piezo speaker to shake loose any sand, and get the volume back. The piezo crystal is usually quartz. If you bend the crystal physically, it makes a voltage. If you hit the crystal with a voltage, it will bend. The bending crystal (attached to the thin metal plate) is what makes the sound. The tape will help to keep out any type of sand.

Mr. Green

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........Red.........................
Pssst! New pilot? Free advice, maybe worth the price,
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