RoboSavvy Forum

Powering robonova from external source

2008-04-04T02:34:32+01:00

Primarily the issue with the charger is all about voltage as it inputs an excess above and beyond the operating specs of the board. If going with an external battery or power supply unit, match the board requirements, or match the existing battery pack specs. The next issue is that the power supply will need to deliver enough amps to supply the servos.

humanoido

Statistics: Posted by Humanoido — Fri Apr 04, 2008 2:34 am

Powering robonova from external source

2008-04-02T22:53:03+01:00

Sorry, A complete system crash this weekend has put me behind schedule, still working on it though!

MadDog

Statistics: Posted by MadDogJoe — Wed Apr 02, 2008 10:53 pm

Re: USB Power and Serial Replacement

2008-03-29T14:51:17+01:00

MadDogJoe wrote:
With a little minor surgery to the MC3024 you can also plug in the charger to charge the battery while it is in use.

Should have something this weekend for you guys to see.

MadDog Joe

That would be perfect!

Statistics: Posted by roboTT — Sat Mar 29, 2008 2:51 pm

USB Power and Serial Replacement

2008-03-27T19:11:06+01:00

Guys, the spec I'm using is for Powered USB, it provides 6Amps through the cable, but since I didn't like the available voltage I just stole the cable and connector, not the actual (and expensive) powered USB hub.

Basically, it is a very small adapter board that creates a powered switch between the battery input and the battery. When the USB is available it powers eveything from the incoming supply from the USB (not the battery) and completes the serial connection (now rerouted through the USB cable via software).

With a little minor surgery to the MC3024 you can also plug in the charger to charge the battery while it is in use.

Should have something this weekend for you guys to see.

MadDog Joe

Statistics: Posted by MadDogJoe — Thu Mar 27, 2008 7:11 pm

Re: Powering robonova from external source

2008-03-27T05:43:30+01:00

roboTT wrote:
Guys,

anyone has idea if / how to power the robonova ( for programming purposes )

I uses this one 6.0Vdc 3600mA

http://www.maplin.co.uk/Module.aspx?Tab ... 8&doy=27m3

have a look @
http://robosavvy.com/forum/viewtopic.ph ... ght=#13461

Statistics: Posted by Sonic — Thu Mar 27, 2008 5:30 am

Powering robonova from external source

2008-03-27T03:53:19+01:00

Compared to "at rest," the combination of servos in motion draw considerable amperage and the total is dependent on a number of factors, including speed, load, number of engaged servos in motion, position, etc. A power supply that matches specifications of the battery pack should suffice. Make sure it's regulated, filtered, and fused properly!

humanoido

Statistics: Posted by Humanoido — Thu Mar 27, 2008 3:53 am

Powering robonova from external source

2008-03-26T21:15:44+01:00

USB is capable of supplying up to 500 mA only. It's too little.

Statistics: Posted by Midas — Wed Mar 26, 2008 9:15 pm

Powering robonova from external source

2008-03-26T20:25:25+01:00

You may need a beefy power supply.

I remember reading on here somewhere that RN can draw 4 amps just standing still!

Way more than USB can supply.

Statistics: Posted by badlands — Wed Mar 26, 2008 8:25 pm

Powering robonova from external source

2008-03-26T17:42:52+01:00

My man, drop some photos even of the prototype

Statistics: Posted by roboTT — Wed Mar 26, 2008 5:42 pm

Powering robonova from external source

2008-03-26T17:41:00+01:00

I am currently working on a USB Power/Serial replacement give me a few more days and I might have more.

Joe

Statistics: Posted by MadDogJoe — Wed Mar 26, 2008 5:41 pm

Powering robonova from external source

2008-03-26T16:58:19+01:00

Guys,

anyone has idea if / how to power the robonova ( for programming purposes ) from other source than the battery.

I would like to work with the robo longer that 1hr, so any source of external power would do the thing.

Usb power ? Anyhthing?

Statistics: Posted by roboTT — Wed Mar 26, 2008 4:58 pm