Help me with some elementary electrical things!

[Janizary]

Hi.

I'm making a basic robot with two servos, a radio receiver and batteries but how do I hook these up to the batteries and how do I make it so the flow of electricity won't fry my servos and radio receivers? Could you please specify what parts I need? Thanks in advance!

[Joker94]

Have a look at the tutorial that Admin has made.

it sounds like it will explain all of the questions that you have.

http://www.societyofrobots.com/remote_control_robot.shtml

[Janizary]

I've read that but it doesn't really specify the wiring of the components. Thanks for your insight though.

[Joker94]

Well i have a lot of experience with RC radios and receivers.

first things first. what is the brand and model? do you already have the gear?

For a battery i would recommend a 4.8v HiMH as that way you don't have to worry about the voltage being to high, they are commonly used in RC applications with no problem and generally all receivers can take 4.8v easy.

I gather you servos are continuous rotations, if so and you have kept the original circuitry then they plug in as any other conventional servo plugs into the receiver.

[Janizary]

I am planning to use this servo http://servocity.com/html/hs-645mg_ultra_torque.html and I am purchasing them pre-modded to have continuous rotation. I want something high torque as the rover I am making is a sumo bot.

[Joker94]

yeah, so you just have to plug they battery into the battery input or an unused channel, and the servos into 2 of they channels. depending on how you want them to be set up.

do you kn ow what RC gear your going to use?

[Janizary]

I'm not sure what you mean by gear could you explain?

[waltr]

do you kn ow what RC gear your going to use?

He means which RC transmitter/receiver equipment (gear).

[Janizary]

do you kn ow what RC gear your going to use?

He means which RC transmitter/receiver equipment (gear).

yeah, so you just have to plug they battery into the battery input or an unused channel, and the servos into 2 of they channels. depending on how you want them to be set up.

do you kn ow what RC gear your going to use?

Oh. I plan to use this http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXXNA1&P=V receiver and this http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXXMV5&P=4 transmitter.

If I use a 4.8V battery, can I power two servos that have an operating voltage of 4.8V and a receiver that has an operating voltage of 4.8V at the same time?

[Joker94]

yeah you only need 1 battery for all of them.

if you want longer run times just find a battery with a bigger mAh rating, meaning that the battery will have more capacity.

[Joker94]

as for the transmitter a thing to look at is what is for what you want it for now and in the future.

if you want it for robotics in the future i would recommend a aircraft transmitter type as it gives you better/more options in the future having more channels. eg add an arm or other mechanical devices.

jus a thing to keep in mind

[Janizary]

as for the transmitter a thing to look at is what is for what you want it for now and in the future.

if you want it for robotics in the future i would recommend a aircraft transmitter type as it gives you better/more options in the future having more channels. eg add an arm or other mechanical devices.

jus a thing to keep in mind

Okay, thank you for your help. Your posts are very "helpful". +1

[Joker94]

now worries more than happy to help.

a good place to look for the stuff you are mentioning is Hobby King. i have had no problems with the service or product quality. they have good ranges and many choices in price range. worth a look!

http://hobbyking.com/hobbyking/store/uh_index.asp

[Janizary]

now worries more than happy to help.

a good place to look for the stuff you are mentioning is Hobby King. i have had no problems with the service or product quality. they have good ranges and many choices in price range. worth a look!

http://hobbyking.com/hobbyking/store/uh_index.asp

Thanks for link but one more thing how do you power on and off the battery.

[Joker94]

The easiest way is to us an RC switch. it has 3 lead. 1 to connect to the batter, 1 to connect to the project and a charging lead. they are cheap and easy to use. the same sort of switch comes with the Axon.

I have used the following one on my robotics projects. the thing i really like is having the LED indicator. this particular 1 only has 2 leads as it has a in built charging jack. not that you have toy charge it in their, that feature is designed for RC planes.

http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=4309

PS. it even comes with a lead to connect to your circuit