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› We need an Electronic Fuel Gauge alarm for E-Helis!
01-15-2011 01:15 AM  7 years agoPost 1
Taipan

rrElite Veteran

Sydney, Australia

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Took it easy while flying my usual 5min & only put back 3000mAh instead of the usual 3500mAh into my 5100mAh lipos. Coulda flown for maybe another minute!

FYI the Eagletree eLogger can be mounted on an E-heli with a Power Panel display current draws, mAh consumed etc.

What would be awesome is being able to program it or have someone make one so that you can set a mAh cutoff alarm and a very bright LED or more mounted to the boom supports or wherever you like will flash indicating it's time to land. Eg I would set it to flash after say 3600mAh has been consumed giving me enough time to land before hitting 80% discharge. Sure beats timing flights!

Call it a Virtual or Electronic Fuel gauge if you like. I sometimes envy the nitro guys being able to see exactly how much fuel they have left in the hover.

I know there are LED alarms out there but they only measure voltage eg. they go off when hitting say 3.3V/Cell but the problem is voltage under load is different to unloaded. They could flash prematurely like whenever slamming pitch etc.

EDIT: It was pointed out to me the Spektrum DX8 does this vaia telemetry however this is voltage based not mAh which is more accurate.

Also pointed out to me is this telemetry system however is only rated at 100A. http://hobbyking.com/hobbyking/stor...idProduct=11251

I can imagine one day all radios should come with telemetry systems as standard with this mAh alarm, it woudl be perfect for E-helis!

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01-15-2011 02:10 PM  7 years agoPost 2
dizzymarkus

rrVeteran

Oswego, NY

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Something like this?

http://www.spartan-rc.com/products/lipoguard_g4/g4.php

Theres a ton of lipo alarms or monitors out there-- good luck in your seach

Markus

I reject your reality and substitute my own :0)

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01-15-2011 06:17 PM  7 years agoPost 3
PJRono

rrKey Veteran

Minnesota, Ya!

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Hmmm, gas gauge = TIMER!

If you skip me I can't play!

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01-16-2011 01:04 AM  7 years agoPost 4
Taipan

rrElite Veteran

Sydney, Australia

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Voltage alarms are no good as voltages fluctuate with load.

An alarm set to go off when you program it to go off after say 3500mAh has been consumed from a 5000mAh lipo (70% discharge) would be brilliant.

With a timer you might undershoot or overshoot your target discharge. I.e. it's annoying to put back 3000mAh when you could have flown a bit more or if put back 4000mAh, you flew too hard for too long.

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› We need an Electronic Fuel Gauge alarm for E-Helis!
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