Society of Robots - Robot Forum

Mechanics and Construction => Mechanics and Construction => Topic started by: 1sam3 on February 23, 2008, 08:31:43 AM

Title: some ideas might help ..
Post by: 1sam3 on February 23, 2008, 08:31:43 AM
hi evry1, am tryin to build a satellite dish with an extra function of holding a signal whilst on a moving vehicle.. now am building a base for the satellite which rotates clockwise and anticlockwise, am getting a light geared dc motor but am searching for a motor driver that is easy to use and cheap (money is an issue in my project).. for a while i was considering to buy a h-bridge due to it being able to rotate my motor in both directions, but i cant find a cheap one, so are there any ideas or alternatives that can help me?.. thnx
Title: Re: some ideas might help ..
Post by: Trumpkin on February 23, 2008, 08:38:00 AM
is this going to be rc or autonomous?
Title: Re: some ideas might help ..
Post by: 1sam3 on February 23, 2008, 08:48:20 AM
autonomous
Title: Re: some ideas might help ..
Post by: airman00 on February 23, 2008, 07:40:35 PM
buy MOSFETS which are high current transistors and make your own H bridge
Title: Re: some ideas might help ..
Post by: 1sam3 on February 26, 2008, 10:28:23 AM
have thought of that already, but guessing it might the cheapest way..
well on the same project am tryin to build a base for the satellite dish which will rotate both in the clockwise/anticlockwise direction ~360degress (my idea was thinking of making/buying something like the robotic arm base)..
any ideas??
Title: Re: some ideas might help ..
Post by: airman00 on February 26, 2008, 07:18:45 PM
i'm assuming you want precision turning ( meaning you can control exactly where you want it to be)

so for that just used a geared stepper motor or just a geared DC motor with encoder

how heavy objects will the base need to spin?

more details would be helpful as well
Title: Re: some ideas might help ..
Post by: Admin on March 09, 2008, 10:26:37 AM
Look for motor controllers, motor drivers, ESC's, and a chip called the L298.

Also this:
http://www.societyofrobots.com/robot_parts_list_electronics.shtml