Answer To A Long Time Question


Hey All,

I wanted to demonstrate the current handle capabilities of the EZ-B and at the same time doing a small test. Here's a quick video I made of Six with 18 servos, I know a few of you asked a long time ago if Six could run with 18 servos, the answer is Yes! Grin

Six with 18 Servos Video

I also wanted to demonstrate the large in rush current demand that Heavy Duty servos can have and how it might effect your power supply or battery pack so I made another quick video :

In-rush current example Video


Thanks for the videos. The brown out is what is happening to my mini-zip.



Thanks for the videos Jeremie.... wow... One thing that I was very surprised is that a even a 10amp power supply couldn't handle the initial power requirements needed by six (I would assume JD as well)....


Earlier this year I made my self a remote control lawnmower of sorts.... I had to use a 20amp fuse on the motor driving the cutting blade because it kept blowing 15amp fuses I was using.... Then I figured out why.... Although it was pulling just under 3amps at running, the initial start up load spiked at over 15amps.....


Lookout Jeremie, you have Soundwave on your power supply. Smile


@Jeremie What battery are you using?
also are you powering thru the v4 or directly to the battery?


Anthony, why don't you just use a mulitmeter and determine exactly just how much power your servos are drawing?... Guessing what the problem is seems to be getting you nowhere.... That's what I would do, anyway...


@Richard R Rich im a noob when it comes to multi-meters. I bought the yellow one you had shown on a past video, but it collects dust. how should i go about measuring the power draw?


Hey thanks for doing this! It's a great way to show the mussel of the V4! I loved watching them! Smile

I have another answer to an ultimate question of life, the universe, and everything else;....................... 42. Tongue (points on the origin of that one)


Please excuse the long explanation or if you already know this but this info important to know in this hobby:

@Ant. Amps are what your going to need to know because that's current. Current is made up of electrons and they are what do the work. Current is kinda like water in a pipe. The force pushing the water in the pipe would be the voltage and the current (amps) would be the water in the pipe. The third part of this is resistance and that would come into play with the type and size of wire your using. Simply put; the smaller and less conductive the wire the more resistance you have or the harder it is for the electrons to rush through the wire. Think about what happens when you try to force way to much water though to small of a pipe. In wire that's too small the electrons will keep squeezing through the wire, starving the load and causing heat and maybe melting the wire. This is also the principle of how a burner on an electric stove works.

Anyway, you need to really need to first know how many amps your load (servos in this case) will pull so you can match your power supply and wire size to it. Not every multimeter can measure amps. I had to buy one that does at Menards. You simply place the meter on the proper Amp reading setting and put the two leads in line somewhere between the positive battery post and the positive load (servo) connection. There are lots of Youtube vids out there showing how to do this.