Ez-b V4 Loses Connection To Wifi

micropuller

Netherlands

Asked Aug 2014 — Edited Aug 2014

Resolved by jstarne1!

I'm using an adjustable power supply (0-18V and 0-3A) to power my EZ-B v4. But it seems that every time I'm moving some servo's a bit too fast, the controller loses connection to my wifi. As long as I make sure the movements are very slow it usually doesn't happen. Could it be that my power supply can't deliver enough amps? Would using a 2 cell Lipo fix the problem? The only Lipo's I've got lying around right now are 3s, so I'm not able to test it right now.

Upgrade to ARC Pro

Harnessing the power of ARC Pro, your robot can be more than just a simple automated machine.

Compare Pro Features View Subscription Plans

Robot Doc

USA

#1 Aug 2014

Does your power supply display the amount of current being provided when this fast servo condition occurs?

jstarne1

PRO

USA

#2 Aug 2014

This is a brown out. Your adjustable regulator output voltage is dropping under current draw in excess of what your regulator is made for. This sudden drop causes the connection to reset. Use a good battery or you can buy/make a more stable benchtop power supply. I have made descent ones with cheap pc power supplies. Ofcourse use a good condition or even new working one.

hope this helps bro! - Josh

Jeremie

PRO

Canada

#3 Aug 2014

Hi @Micropuller

It is just as you suspected and as Josh has confirmed, your power adapter just can't handle the in-rush current requirements of the servos and drops the voltage (browns out) as a result.

We definitely recommend using 2S (7.4V) 25C LiPo batteries, that's what we use for our robot kits.

micropuller

Netherlands

#4 Aug 2014

I found a 2s Lipo in a small robot I built some time ago. Hopefully I'll have some time on my hands in the next couple of days to give it a try. Will keep you posted.