Today's Message Index:
----------------------
1. 12:39 PM - Re: Inexpensive voltage data logger (Charlie England)
2. 01:19 PM - Arduino project (Alec Myers)
3. 02:36 PM - Re: Arduino project (Peter Pengilly)
4. 03:26 PM - Re: Re: Inexpensive voltage data logger (GTH)
5. 04:58 PM - Battery charger / power supply (Art Zemon)
6. 05:26 PM - Re: Battery charger / power supply (Sebastien)
7. 05:45 PM - Re: Battery charger / power supply (David Lloyd)
8. 10:04 PM - Re: Battery charger / power supply (jim)
Message 1
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| Subject: | Re: Inexpensive voltage data logger |
This looks interesting. I bought one a couple of years ago, but never
got around to trying it out.
https://www.ebay.com/itm/Promo-iCP12-5mV-6-Ch-PC-Analog-USB-Oscilloscope-Unlimited-Logger-IO-DAQ-ADC-/122756578319?hash=item1c94dcbc0f:g:mfUAAOSwys5WUMMB
There's also a series of systems with a lot more ins/outs that (I think)
originated 'down under', but can be sourced in the USA, now. They're
built around PICxxx chips, and come with a free BASIC language to
program their features. The cool trick with these is that any VGA
compatible display makes them real time monitors + data logging.
http://geoffg.net/maximite.html
Charlie
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Message 2
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This is probably of more interest to the aerodynamicists than the
avionics people, but I built a data logger around a BNO055 orientation
sensor and a BMP280 pressure sensor, an Adafruit Feather M0 datalogger
(Arduino with built-in microSD slot), GPS module and LCD screen. It
records GPS position and altitude, pressure altitude, ground speed,
acceleration, heading, pitch and roll angles, and some other
miscellaneous bits, twice every second.
I used it to get data for some experiments in spiral dive instability
and the following phugoid (if you don=99t damp it out yourself) in
the recovery.
All the modules have code libraries already written, so putting the
software together was quite easy.
One thing I found helpful was to have a display so I could log the
sequence number whenever I began a test or manoeuvre. Saved scrolling
through reams of data over a thirty minute flight to find the 60 seconds
I wanted.
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Alec,
Could you possibly send me your email address off list to peter at
sportingaero dot com?
I was an aerodynamicist before I moved over to avionics and would be
really interested to know more about this device.
Regards, Peter
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Alec
Myers
Sent: 22 October 2017 21:17
Subject: AeroElectric-List: Arduino project
This is probably of more interest to the aerodynamicists than the
avionics people, but I built a data logger around a BNO055 orientation
sensor and a BMP280 pressure sensor, an Adafruit Feather M0 datalogger
(Arduino with built-in microSD slot), GPS module and LCD screen. It
records GPS position and altitude, pressure altitude, ground speed,
acceleration, heading, pitch and roll angles, and some other
miscellaneous bits, twice every second.
I used it to get data for some experiments in spiral dive instability
and the following phugoid (if you don=99t damp it out yourself) in
the recovery.
All the modules have code libraries already written, so putting the
software together was quite easy.
One thing I found helpful was to have a display so I could log the
sequence number whenever I began a test or manoeuvre. Saved scrolling
through reams of data over a thirty minute flight to find the 60 seconds
I wanted.
Message 4
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| Subject: | Re: Inexpensive voltage data logger |
Le 21/10/2017 08:32, Eric Page a crit :
>
> I've played around with one of these a bit and it seemed to work quite well.
>
> http://preview.tinyurl.com/ya7pg9sg
>
Hi all,
Thanks a lot for so many quick answers and kind offers ! I really do
appreciate.
I'm feeling a little "green" for programming a sophisticated multi
channel DAQ card within a few days.
Time is a factor, and my fellow builder is getting a bit nervous seeing
his voltmeter oscillating randomly between 14 and 15 V instead of the
solid 14 V the Rotax always produced to date.
So for the time being I think I'll stick with the basic and inexpensive
Maplin N70DP
https://www.maplin.co.uk/p/maplin-usb-dc-voltage-data-logger-n70dp
Now I'm embarrassed to say I'll have to choose between two most kind
proposals from two gentlemen on this 'List !
Thanks again,
--
Best regards,
Gilles
http://contrails.free.fr
http://lapierre.skunkworks.free.fr
Message 5
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| Subject: | Battery charger / power supply |
Would this be good for my plane after I have an engine and for testing the
panel now?
https://m.harborfreight.com/2815-amp-automatic-microprocessor-controlled-battery-charger-63299.html
-- Art Z.
Sent from my phone. Please excuse brevity and bizarre typos.
Message 6
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| Subject: | Re: Battery charger / power supply |
The problem I see with that charger Art is that it will not act as a power
supply. If you want to test the panel or power the aircraft, that charger
will turn itself off automatically if it sees the drain.
I would go with something like this that has a power supply mode. This one
will supply 5A continuously while you work. If I'm going to have the master
on more than a couple minutes I plug it into ground power to support the
battery.
https://www.amazon.ca/NOCO-G7200-7-2-Amp-Battery-Maintainer/dp/B004LWTHP2/ref=sr_1_1?ie=UTF8&qid=1508718168&sr=8-1&keywords=genius+charger+7200
On Sun, Oct 22, 2017 at 4:56 PM, Art Zemon <art@zemon.name> wrote:
> Would this be good for my plane after I have an engine and for testing the
> panel now?
> https://m.harborfreight.com/2815-amp-automatic-microprocessor-controlled-
> battery-charger-63299.html
>
> -- Art Z.
>
> Sent from my phone. Please excuse brevity and bizarre typos.
>
Message 7
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| Subject: | Re: Battery charger / power supply |
Hi Art,
I think you are asking 2 questions about battery and panel test.
If you are just trying to keep a good battery charged/maintained, there ar
e several low cost "maintainers" out there. Harbor F. has one for about $5
- 10, depending on their crazy sales ads. It is small and works for "main
taining" only. Not for charging a flat battery or testing panels as its cu
rrent ability is too low.
The only detail to note in its use... is to measure the float voltage once
it has stabilized the charging level of the battery. My suggestion is that
it should "float" about 13.2 to 13.4 v. Others may disagree. If it is no
t that, save your receipt, return it and get another unit. The older style
units, with a little case modification, could be adjusted to the correct v
oltage range. Not sure the current models can be adjusted.
Now, for general charging/maintaining and panel testing, I believe the unit
you suggested should work fine. Keep in mind that it's top current abilit
y is 15 amps. So, don't fire up the panel and accessories to more than app
rox. 12 amps or so.
All should be fine. Let us know if use this unit how it performs. . . .
Dave
---------------------------------------------------------------------------
-----
----- Original Message -----
From: Art Zemon
To: aeroelectric-list@matronics.com
Sent: Sunday, October 22, 2017 4:56 PM
Subject: AeroElectric-List: Battery charger / power supply
Would this be good for my plane after I have an engine and for testing th
e panel now?
https://m.harborfreight.com/2815-amp-automatic-microprocessor-controlled-
battery-charger-63299.html
-- Art Z.
Sent from my phone. Please excuse brevity and bizarre typos.
---
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Message 8
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| Subject: | Battery charger / power supply |
I read with interest the battery charging information.
I agree that a battery charger/maintainer is the way to go.
I do not get the cheap (made in China battery chargers) the life
expectancy of some of the cheap parts in them is too much of an issue
for me. All it takes is for a resistor, or capacitor to go out and the
charger to go into a high voltage mode and you have a melt down on your
battery. It could possibly catch fire and burn your airplane up.
I pay a little more and get one of the high quality BATTERY MINDER
charger/maintainers. They have a proven reputation and are built with
high quality parts. They also have circuits to prevent high runaway
voltage just in case one of the critical parts fail.
Think about what you are risking with a battery charger malfunction.
Fortunately, most of the time, if there is a part failure, they just
shut down, and drain your battery to zero. Then you get to buy another
battery and another charger.
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Art
Zemon
Sent: Sunday, October 22, 2017 6:56 PM
Subject: AeroElectric-List: Battery charger / power supply
Would this be good for my plane after I have an engine and for testing
the panel now?
https://m.harborfreight.com/2815-amp-automatic-microprocessor-controlled-
battery-charger-63299.html
-- Art Z.
Sent from my phone. Please excuse brevity and bizarre typos.
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