PilotAware

British Forum => General Discussion => Topic started by: Lerk on March 27, 2019, 12:20:37 pm

Title: Ships power and Skydemon Logging
Post by: Lerk on March 27, 2019, 12:20:37 pm

Hi all,

I've been trying to solve an issue with logging engine start times in SkyDemon whilst using PAW connected to ships power.

Previously I used PAW on a powerbank, but now I am using one connected to ships power, I have stumbled on the issue of logging engine start when the PAW is not yet booted.

See discussion on SkyDemon Forum here... (http://forums.skydemon.aero/Topic28074.aspx)

It would appear that the only way to use PAW on ships power is to start the engine and then start flight logging 2-3 minutes later once the PAW has booted.

Are there any other users of installed systems that use SkyDemon that have come up with a better process for startup?

I'm wondering about a pass-through powerbank and separate switch, but I know Anker don't do that and I know PAW issues are frequent when homebrewing power supplies!

Title: Re: Ships power and Skydemon Logging
Post by: neilmurg on March 27, 2019, 01:49:09 pm

Have you seen this? (https://www.youtube.com/watch?v=jecgoBqOrhk)
(which I think is short on output power, 1A)
Or this (https://www.aliexpress.com/i/32966657059.html?spm=2114.search0301.3.10.59eae9bfErokJ7&ws_ab_test=searchweb0_0,searchweb201602_0_10192_453_454_10618_536_317_537_319_10059_10696_10084_10083_10304_10821_10843_10887_10307_321_10548_322_10902_10065_10068_10301_10103_10884_10820,searchweb201603_0,ppcSwitch_0&algo_pvid=441362e1-d52e-4626-b68e-650404380001&algo_expid=441362e1-d52e-4626-b68e-650404380001-1), but I don't know if it will have the U in UPS

Title: Re: Ships power and Skydemon Logging
Post by: Ancien on March 27, 2019, 08:38:09 pm

Hi Lerk
I've been using something very similar to this below[note output power] for a year+without any problems [I know I shouldn't have said that!].
Just choose your output plug.
Wired in through a separate CB on the main bus.
Comes on with the Master switch.
All fired up and ready to go before start up.
No problems with starter cranking - modern electronics is incredibly insensitive to voltage drops on the main bus - as this device appears to be.
For a simple avionics setup I can find no reason for an avionics master switch.
 
Good luck
Bob



https://www.ebay.co.uk/itm/DC-12V-to-5V-Inverter-Hard-Wire-Power-Charger-Cable-for-Car-DVR-GPS-Tablet-Phone/332645881996?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D1%26asc%3D20190212102350%26meid%3D8e3c0e63870443c5aa6308370bbc02c4%26pid%3D100012%26rk%3D1%26rkt%3D2%26sd%3D272837249173%26itm%3D332645881996&_trksid=p2047675.c100012.m1985

Title: Re: Ships power and Skydemon Logging
Post by: exfirepro on March 27, 2019, 09:04:26 pm

Hi All,

Good to hear you are getting positive results using such a cheap power supply Ancien. Just a word of warning to others that these type of devices have a poor record as they can be very prone to putting out RFI (interference) all over the place, which can have a seriously negative effect on avionics (not just PilotAware) and comms. There is a reason why Aircraft specific power supplies are expensive - and it’s not to create profit for the makers.

I’m not saying don’t try it - just be aware of the potential issues.

Best Regards

Peter