Supervision, yea same here. When I was 4 I wondered off from home through a forest behind my house. I ended up by the highway and some guy stopped and picked me up. I directed him back to my house and he was amazed at how far I had walked, but even more amazed that I knew how to get back home. He took me to the door and my dad answered it. This man that brought me home was his Commanding Officer. I never found out what happened to my dad, but at the time he was working at the Pentagon designing the communications systems on the E4-B military airplane (google it). I am sure it didn't go well, but he was the first employee on the entire project.

I wondered what he and my mom were thinking when I was in my 20's allowing my brother and I to just roam and experience things. I now appreciate it a lot more. Society has changed so much that now kids can't play in their front yard in most cities. We would be gone all day in 0 degree weather. We would go camping for the weekend when it was -18 degrees C. Now kids don't like being outside when it is below +18 degrees C.

so many things have come to mind that I would never let my children do now that I was allowed to do when I was young. The issue is that my kids don't have a clue what an Amp or a Volt is. If the plug fits the electronic device, it has to be good, right?

I think we as humans (animals as well) do better if there is some stress and struggle to deal with in life.... I mean "it is the presence of wolves that make deer swift and strong, not their absence"....

Taking away everything that could potentially harm our children would rob them of experiencing life the way we did and our father's did and so on... Bubble wrapping them and putting them in the basement to keep them safe has to be a form of child abuse... My ex-girlfriends kids didn't want to do anything but video games and tv... Any kind of discomfort and they would whine like they had a broken leg or something... Now I know why.... they never had to struggle... If it isn't easy they quit... My grandfather who fought in WW2 would be ashamed...

Anyway, you are right about the changing world... it's different than when we were kids... so what do you do? How do you keep the children safe yet at the same time let struggle a bit and teaching them the awesome reward of "fruits of their labour"...?

Hey guys, thanks for the advice and the link, I will try to figure out better how stuff works before just putting it together and hooking it up to to some random power source!

I was just toying around and trying to figure out how to get those things to work and did not really pay much attention on calculating anything, that is why I bought those cheap servos...which does not mean I was up to damage damage them intentionally!

I will go get a better power source from the basement and check how good it'll do!

These are the servos I bought, my current robot has 10 of those...

http://www.micropik.com/PDF/SG90Servo.pdf

So correct me if I am wrong, but I should put 4.8Volts to the Ez-B to power the board which can work from 4.5Volts as noted in the specsheet, plus get me a better powersupply which will provide enough amps for my servos but does not have a higher constant current than 5amps ?

Also one more thing, I noticed that all servos jerk to some weird position once I power up my EZ-B...which is kind of annoying. Is there any way to stop this?

Thanks for your help guys!

First, the servo question... Analog servos jerk when power is applied. Digital servos do not.

You have the correct idea about the amps/volts. The v4 can run from 4.8 volts with no issue. The digital ports on the v4 are not regulated, so if you are going to run 5 volt servos, it is best to run a 5 volt supply generally speaking.

Dont confuse digital servos and digital ports. Analog servos still connect to digital ports.

Also, sorry about sidetracking your thread. No insult intended.

Never mind. Dave beat me to the answer

Alan

@Mickey.

Yes, running them 4.8v servos you linked to off an EZ-B running off a 7.4v power source would damage them, and 9 volts will probably fry them pretty quickly.

@Mickey666Maus yes the ezb can run off of 4.8v... However, that voltage is near the absolute minimum to keep the ezb alive... Any drop in voltage would or could mean constants "brown outs" and rebooting of the ezb4.... I would suggest using a higher voltage for the ezb4... Like 7.4v...

Thanks a lot guys, that should help me to get going!

I found this old beast in the dungeon...lets see what it'll do to my feeble little lego creature!

voltcraft ps 303 pro

Btw, this seems to be a vital community, where a simple question about voltage sparks thoughts on life, death and wolfs lurking in the forest! Thanks all!

I dont know yet about this kudos system here in the forum so I guess this wraps up the topic and Steve G was the first to answer...am I doing this right?