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Powering robonova from external source

Hitec robotics including ROBONOVA humanoid, HSR-8498HB servos, MR C-3024 Controllers and RoboBasic
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Powering robonova from external source

Post by roboTT » Wed Mar 26, 2008 4:58 pm

Post by roboTT
Wed Mar 26, 2008 4:58 pm

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?
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?
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Post by MadDogJoe » Wed Mar 26, 2008 5:41 pm

Post by MadDogJoe
Wed Mar 26, 2008 5:41 pm

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

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

Joe
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Post by roboTT » Wed Mar 26, 2008 5:42 pm

Post by roboTT
Wed Mar 26, 2008 5:42 pm

My man, drop some photos even of the prototype
My man, drop some photos even of the prototype
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Post by badlands » Wed Mar 26, 2008 8:25 pm

Post by badlands
Wed Mar 26, 2008 8:25 pm

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.

:-(
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.

:-(
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Post by Midas » Wed Mar 26, 2008 9:15 pm

Post by Midas
Wed Mar 26, 2008 9:15 pm

USB is capable of supplying up to 500 mA only. It's too little.
USB is capable of supplying up to 500 mA only. It's too little.
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Post by Humanoido » Thu Mar 27, 2008 3:53 am

Post by Humanoido
Thu Mar 27, 2008 3:53 am

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
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!

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Re: Powering robonova from external source

Post by Sonic » Thu Mar 27, 2008 5:30 am

Post by Sonic
Thu Mar 27, 2008 5:30 am

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
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
Last edited by Sonic on Thu Mar 27, 2008 5:43 am, edited 2 times in total.
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USB Power and Serial Replacement

Post by MadDogJoe » Thu Mar 27, 2008 7:11 pm

Post by MadDogJoe
Thu Mar 27, 2008 7:11 pm

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
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
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Re: USB Power and Serial Replacement

Post by roboTT » Sat Mar 29, 2008 2:51 pm

Post by roboTT
Sat Mar 29, 2008 2:51 pm

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!
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!
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Post by MadDogJoe » Wed Apr 02, 2008 10:53 pm

Post by MadDogJoe
Wed Apr 02, 2008 10:53 pm

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

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

MadDog
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Post by Humanoido » Fri Apr 04, 2008 2:34 am

Post by Humanoido
Fri Apr 04, 2008 2:34 am

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
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.

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