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Dan.Beadle(at)hq.inclines
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 Posted: Wed Jan 11, 2006 9:38 am Post subject: Beta Test - MasterMinder and Courtesy Switch products |
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I am building two products for experimental aircraft. I am looking for a
couple people to test the units.
- MasterMinder. This unit will sit past the contactor and
monitor a switched bus. It has a SonAlert to indicate loss of
Alternator and to remind if you leave the master on. It has a mute
switch to allow the beeper to be turned off for a period of time, like
for service. Normal operation is a single beep as the master is turned
on. This indicates that the system is armed. After starting, it
monitors the bus voltage. If the bus falls below about 13.4 Volts, the
system beeps once, then again (and more annoyingly) every minute.
Pushing the optional mute button mutes it for 1,2,5,10, or 30 minutes.
On shutdown you get a single beep as the engine winds down. But then you
get periodic beeps every minute after shutdown, indicating you left the
master on. It has an optional voltage display and / or idiot light
outputs.
- Smart Accessory Switch. For planes with lights or other
accessories on the hot buss, it is always annoying to find that some
load has been left on far longer than you want. In my plane, I have a
passenger light that kids play with and leave on. It is hard to detect
during the day. So I build the smart switch. It monitors buss voltage.
If the alternator is on, the switch is dumb - just an on-off. However,
if the buss voltage drops, the smart switch starts a timer to power off
the load after a pre-set time. In my case, I have the switch auto-power
off after 10 minutes. This lets me deplane with light, but catches the
case where the light is left on. If the unit powers off too soon, you
just toggle the switch off then back on, restarting the timer.
I would appreciate any thoughts about the functionality of these devices
(They are software based - so features can change)
I am also looking for a couple testers who will fly the devices and give
me user feedback from packaging to installation to usability. Devices
will be free to the testers. Expected pricing is under $100.
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Bill Denton
Joined: 10 Jan 2006
Posts: 97
Location: Chicago, IL USA
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| Posted: Wed Jan 11, 2006 9:59 am Post subject: Beta Test - MasterMinder and Courtesy Switch products |
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Just a thought, but since a large number of pilots wear headphones, many
with active noise reduction, you might consider adding some sort of tone
generator, and provide an audio output which could be fed to the aircraft's
audio panel...
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