Problems with drop in current

[Fighting For Freedom]

Hi,

After I placed the Neopixelring, The Ultrasonic and PIR sensor the servo’s started to jitter 

And I get error reports.

AI told me that’s a common problem which  inmoov builders face frequently.

And that the Arduino’s loose their power and connection while the servo’s are draining the current.

AI advice me to put a big cap on both Nervo boards, and a smaller one 1000uf and ceramic 0,1uf cap and the problems will disappear.

Can you confirm this?

Regards, Marina

https://youtube.com/shorts/aytMbN6BCxM?is=lnHW1ZcjklMGXKZe

[gael langevin]

Hello,

This issue is related to your USB Hub, because it cannot supply enough Amps to all your devices.

I use a powered hub on which all the devices are connected, arduino, camera, amplifier, etc...

You need a 4 Amps powered hub. (Don't trust AI about that big cap on both Nervo boards)

Gael Langevin

Creator of InMoov

InMoov Robot

@inmoov

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[Marco Bolduc]

Never face that problem with servo but with motor controller yes. The big cap didn't fix for a simple reason, motor was draining it too. If this is really your problem, you need to put a diode to the line that supply power to your Arduino then you can add your big cap if still needed. That way cap will be able to keep Arduino voltage stable without getting drained by everything else.

But like Gael said I don't think this is your problem.