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Author Topic: Reciever Power Supply  (Read 291 times)
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Robmoff
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« on: May 18, 2019, 07:16:18 AM »

I needed to set up a new airplane and as usual all my LiPos were at storage voltage and the old t(r)usty NiCads that I often use were flat. I did have a mains to USB adapter lying about doing nothing and a spare 2m long USB cable, so the USB cable lost it's B end, the red and black wires found themselves in a servo plug, and I had a powered up receiver! As an added advantage this will not arm the ESC, so the plane cannot embark on a voyage of destruction round the shop.
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Reciever Power Supply
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Never underestimate the innate hostility of inanimate objects.
fred
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« Reply #1 on: June 02, 2019, 07:42:45 PM »

Klever :-) Care tho Many USB plug in power supplies are fairly Crap.. outputting dirty voltage. Fit one to an LED and watch.. with Crap ones the led will flicker.
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Pops
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« Reply #2 on: June 12, 2019, 11:53:44 AM »

Indeed. And with many of these cheap power supplies one of the mains lines is also present on the secondary (5V) side, so if you're unlucky you will either get a 120/240V shock while working on the system, or fry your receiver - or both. Feeding the receiver from an external power bank should be safer, but might not produce enough juice to power more than one/a few servos at the time. But for testing purposes this should work just fine. (Now why didn't I think of that...) Smiley
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SP250
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« Reply #3 on: June 12, 2019, 03:34:44 PM »

Rob

Get a new camera or clean the lens please before you shoot any more pics!

Cheers John M
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Robmoff
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« Reply #4 on: June 12, 2019, 05:59:57 PM »

Rob

Get a new camera or clean the lens please before you shoot any more pics!

Cheers John M

I used my phone as it's the quickest way to upload LR pics, normally reliable but it decided NOT to autofocus. I'll use one of my SLRs next time, transfer to my PC, convert to JPEG, reduce to manageable size, optimise and then upload, when I have a whole afternoon to spare. Grin

PS Note my sig line!
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SP250
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« Reply #5 on: June 13, 2019, 03:45:52 AM »

Yep you're right there, I still have a recalcitrant vac pump which refuses to run despite all tests showing everythng to be right.

John M
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