Maximum amps supported by the PPM/SB port and the servo rail

Navio / Edge Hardware
1

What is the safe maximum amps that can be drawn from servos and other devices on the servo rail?

Also, does the receiver port labeled PPM/SB get power form the same source as the rest of the servo rail? I’m thinking not because servos won’t operate until a separate power source is connected.

What is the maximum amp draw possible from the PPM/SB port?

I have a receiver that can transmit telemetry with a 1W RF section. This receiver draws as much as 500ma and I want to assess whether the PPM/SB port is designed to supply that much of current.

Thanks,

Paul

2

I still want an answer to this question. Thanks.

Paul

3

Hello Paul!

Sorry it’s taken us so long to reply.

The maximum current that can be drawn from Navio and Raspberry combined is 2A. The PPM/SB port included.

It’s safe to draw up to 10 amps. But you’ll need a BEC with a very specific specification of 5V/10A. The better solution is just to use a separate power line for this kind of usage.

And now answering your initial question about a receiver which draws as much as 500mA. You’ll be just fine in case the overall consumption doesn’t exceed 2A.

4

Wow, that’s a powerful receiver port and it should handle my 500ma receiver well.

I use a regulator to power the servo rail, and a power module for redundancy.

Thanks George,

Paul

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5

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