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HomeAircraftHelicopterAerial Photography and Video › Speaking Altimeter for solo AP
02-10-2008 05:55 PM  10 years agoPost 41
mwp

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Chatham, Ontario, Canada

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Hi Carl
Great development work on the talking altimeter.

I would be interested in the downlink audio version as well. Probably assembled, possibly a kit for the fun of building it.

What is the lower voltage limit for proper operation?

---------------------------------------------------------------------

Not that you need your project to be more complicated at this point but consider this.

One more option that some of us could fined helpful is the announcement of elapsed flight once a minute. If it were tied into the throttle channel it could be triggered to start with first sustained throttle up and possibly hold elapsed time with throttle down. Much like the TX timers triggered on and off with the throttle hold switch.

Time 1, Time 2 …

And if the option included a firmware settable time warning.

Time 13, Time 14, Time Critical 15 …

If possible the alternate voice could be considered for time announcements.

Just some thoughts

All the best
Mark

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02-10-2008 08:39 PM  10 years agoPost 42
G0KPE

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Newbury, Berks - UK

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Elapsed flight time announcements
Hi Mark,

I really like your idea of adding elapsed flight time voice announcements, say once a minute. It would save those glances away from the heli to look at the transmitter screen. Certainly much safer.

No need to link to throttle as you suggest. The timer could be kicked off by the heli rising through for example 3 metres for the first time. Similarly, the timer could be paused if the height dropped below 3 metres and kicked off again if the heli rises again.

I think your idea is so good I'm going to do the necessary firmware code for my altimeter over the next few evenings and test fly it next weekend, weather permitting.

You have asked what the lower voltage limit is. The answer is absolute minimum 4.8Volts.

Best regards
Carl

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02-10-2008 09:33 PM  10 years agoPost 43
Disciple4123

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USA

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Many different needs...
I see many suggestions that coordinate well with our individual setups, brains, or both. Perhaps we could have several modes available with a 4 position slider switch. One mode would have alt every three seconds and the tonal arrangement I propesed earlier. Another would have the elapsed time that others find useful, etc?

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02-10-2008 09:43 PM  10 years agoPost 44
mwp

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Chatham, Ontario, Canada

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Thanks for the voltage info Carl, looks like my two cell li-po currently used for the downlink will be further employed.

Great to be able to bounce ideas around and have someone capable of making it happen at the other side of the conversation.

Looking forward to the flight test report!
Perhaps we could have several modes available with a 4 position slider switch.
If hardware changes pose a problem then perhaps we could each install a particular firmware version that offers the features preferred.

P.S. This unit should appeal to more than just solo AP flyers.
Mark

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02-11-2008 10:56 PM  10 years agoPost 45
AceBird

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Utica, NY USA

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Never mind Carl, I found my answer. It is a bit on the expensive side but everything I have found so far has way too much bandwidth. I will keep looking for a cheaper solution.

Ace
What could be more fun?

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02-11-2008 11:38 PM  10 years agoPost 46
trackhead

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utah

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Believe it or not this still will consume brain power differentiating the direction, not as much as calling the numbers but more than saying up when it’s going up and down when it’s going down. The faster you understand the message the quicker you can make an adjustment. Actually, the shorter the message the better. The word “up” and the word “down” all by themselves will be the quickest to recognize, even it is your wife yelling at you. For those of you that are using teams with a headset try shortening the messages and see if it doesn’t help.
In paragliding we fly with a vario, it's VERY easy to tell if you're going up or down based on it's beeps and tones. Doesn't take any mindpower at all. It changes rapidly with ascent or descent, based on speed and tone.

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03-06-2008 02:09 AM  10 years agoPost 47
mwp

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Chatham, Ontario, Canada

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Hello Carl

Hope things a going well for you.
Any updates on your altimeter and possible flight timer?

I have been watching this thread with great anticipation.

Mark

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03-06-2008 03:57 PM  10 years agoPost 48
G0KPE

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Newbury, Berks - UK

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Hello Mark,

Thank you for your interest. I've added the flight timer announcement function and that works well. It announces the flight time as every minute elapses.
Have also added a 'maximum height during flight' announcement when the altimeter/heli is back on the ground.

I am now working on an add-on board to give me an altitude hold function for my HeliCommand HC3A equipped heli. Early days yet with the circuit design and software, but looking forward to trying it out soon.

More info on my homepage

Best regards
Carl

‹(•¿•)›

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03-06-2008 05:23 PM  10 years agoPost 49
Torsten

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Germany

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altitude,

rx voltage

rx signal quality

and a variometer if you want to fly it in a glider

i have one since a year and love it.

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03-08-2008 08:49 PM  10 years agoPost 50
mwp

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Chatham, Ontario, Canada

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Thanks for the update Carl.

Glad to hear that the flight timer addition went well.

Mark

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03-09-2008 12:33 AM  10 years agoPost 51
monterey_tip

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Monterey, Ca - USA

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altitude,

rx voltage

rx signal quality

and a variometer if you want to fly it in a glider

i have one since a year and love it.
Which one is that Torsten?

Tip

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03-09-2008 01:22 AM  10 years agoPost 52
22megatons

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USA

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03-09-2008 09:06 AM  10 years agoPost 53
monterey_tip

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Monterey, Ca - USA

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Ok, I've heard of that one. Thanks 22megatons.

Tip

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03-15-2008 05:30 PM  10 years agoPost 54
meflyjeep

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On the ground and in the air ...

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For sale yet ?

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03-15-2008 11:52 PM  10 years agoPost 55
G0KPE

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Newbury, Berks - UK

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Hello Meflyjeep,

I have had a good deal of interest in my speaking altimeter and have been judging if it is worth building it in numbers. Unfortunately, the high cost of the speech synthesiser circuitry in my design seems to push the speaking altimeter outside the budget of many of those enquiring. Please PM me and I'll give you all the info for you to judge yourself. I have enough bits to make up single units as and when required.

Best regards
Carl

‹(•¿•)›

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03-16-2008 01:25 AM  10 years agoPost 56
AceBird

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Utica, NY USA

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We are a bunch of penny pinching misers arn't we?

Ace
What could be more fun?

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03-30-2008 07:06 PM  10 years agoPost 57
mwp

rrApprentice

Chatham, Ontario, Canada

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PM sent for pricing info.

Mark

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03-31-2008 02:03 AM  10 years agoPost 58
MPA

rrElite Veteran

Australia

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Been meaning to get back to you about this talking altimeter.
Flat out as usual.

As mentioned before, I can't use the talking ones because my buyers are luke warm on it at the price, and thats the end of that.

However, if the speech synth is the most expensive part, I assumed so.
I could use an altimeter that has a tone generation output linear in frequency to alt or wind speed with a pitot tube added, with mono mini phone jack to send to audio input of a video sender.

I use a Laptop based cam mount control system now, still all wireless.
Software driven (in house program).
The Camera mount is a discoverable bluetooth class 1 device with authentication.
Servos driven from data command set via virtual serial port connection over bluetooth.
Bi directional it monitors for error correction and can hard reset on board driver module, and monitor and display battery charge cut off level.
Thus I have TXD, RXD, DTR and DSR all used.

I would like wind speed monitoring.
I use 900Mhz video and it comes into the laptop via USB2 Video cap device.
(In software the user drags the viewfinder image with mouse to move cam mount axis and so forth just like online flash media pano viewers. Dbl click or space bar to shoot, plus shooting macro functions like settable one click pano or spherical, intervalometer. Power saver sleep that shuts off servos, video Tx and mini cam power on the mount with mouse inactivity for a period.)

Ive shipped 3 of them now over the last 4 weeks, impressed the heck out of the buyers....rock solid operation and excelent reception both ways, data and video.
Craps on the old RC gear I used and control box with LCD.

Anyway,
I can get audio into the laptop and my cam control software.
With that I can use MM API's to read sound to data from buffer.
(8 bit mono should do it and is supported in ACM for Audio up the USB2 caputre instead of line in, most Laptops dont have)
And then with data levels, FFT in code to get frequency (got all the code ready to drag and drop into it from another audio app I wrote on my software site)
Then I can transpose frequency on the audio input to wind speed scale and calibrate at software level to show screen warnings when it exceeds setpoints.

So, how much for a wind speed or alt meter with simple audio out frequency modulated tone at 1v p~p level ??
Running off 5v batt pack too.

Request posted here in case others could use a tone output alt meter.
(As I understand you need some demand to do them.)

PM me if you are interested and can figure a price for it.

Cheers
Dave

rvv.com.au

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HomeAircraftHelicopterAerial Photography and Video › Speaking Altimeter for solo AP
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