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Offline Jaryd107Topic starter

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$50 robot Questions
« on: May 09, 2009, 01:40:16 PM »
I have two questions about my $50 robot. ??? ???

1.I am sodering my board and the soder from one pin touches the soder from another pin. Is this a problem, what should I do.

2.Can i use a 9volt battery or is that too much voltage. I think it would be easier because i have a battery connector thing for the 9v.

Thankyou

Offline Webbot

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Re: $50 robot Questions
« Reply #1 on: May 09, 2009, 04:46:08 PM »
I have two questions about my $50 robot. ??? ???

1.I am sodering my board and the soder from one pin touches the soder from another pin. Is this a problem, what should I do.

2.Can i use a 9volt battery or is that too much voltage. I think it would be easier because i have a battery connector thing for the 9v.

Thankyou

1. Major problem! Try to clean your solder tip and then run it between the two pins to create a gap. Otherwise google for solder wick
2. 9v will be ok so long as it goes via the voltage regulator before hitting the chip
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Offline Jaryd107Topic starter

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Re: $50 robot Questions
« Reply #2 on: May 09, 2009, 04:48:51 PM »
Kk... im gonna try to fix the solder problem. Oh... and yeah, its going through a regulator.

Offline SmAsH

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Re: $50 robot Questions
« Reply #3 on: May 09, 2009, 04:49:33 PM »
to the second question, if you are only using one pack for servos and mcu then you cannot use a 9V
as this will fry the servos...
if you are using the two pack method it will be fine.
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Offline Razor Concepts

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Re: $50 robot Questions
« Reply #4 on: May 09, 2009, 04:51:28 PM »
Smash... please read everything twice before posting. He just said it's going through a regulator  ;)


You could use the 9v pack, however the servos draw a lot of current so you will be eating through 9v batteries like crazy.

Offline Jaryd107Topic starter

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Re: $50 robot Questions
« Reply #5 on: May 11, 2009, 05:06:17 AM »
Ok... would you recomend just using 4 AA(1.5v) batteries instead?

Offline SmAsH

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Re: $50 robot Questions
« Reply #6 on: May 11, 2009, 02:40:49 PM »
Smash... please read everything twice before posting. He just said it's going through a regulator  ;)
i did! i thought he only meant he was using the regulator for the mcu as using it for the servos seems very illogical!
Ok... would you recomend just using 4 AA(1.5v) batteries instead?
yes, that would work, but are you sure you don't want to consider a rechargeable pack?
if you are serious about going into robotics you should get or make one! because buying all those batteries is a B#$CH.
you can run the board off one pack, but it may have the be a 7V2 pack... as some regulators need more than one volt above the regulated voltage to run.. so, in some cases it is better to use two packs... your choice...
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Offline Webbot

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Re: $50 robot Questions
« Reply #7 on: May 11, 2009, 05:36:37 PM »
IMHO You're best with 2 packs.

1 pack for the servos (ie unregulated) which could be say 4xAA rechargeables @ 1.2V each. So say 4.8v. If you go much beyond 5v then check the datasheet for your servo so you dont blow it.

1 pack to go via the regulator to feed the controller circuit. I tend to use a rechargeabl 9v battery. They cant supply much current but your processor doesn't need much.
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