Hello all,
I have been planning to build a robot for ages now. I have drawing "cigeratte packet" designs for literally years, but although I am good in some areas, I am hopeless at actually picking a product off the shelf and getting a circuit going.
I am going to finally take the plunge and get buying components to build with.
I have a few questions in this topic (which i know is taboo, but they all lead on from each other)
I intend to build a modular system, where a module is responsible for a specific area's control, these modules will then be linked with a serial bus communication newtork (probably a long time in the future!)
So every journey must begin with a first step, and mine is the motors and motor control module.
What type of motor should I choose? I am thinking that a brush/brushless DC motor is the best choice to start with. I plan to strip this out of a portable car compressor pump (£7.99 from ebay). Will this be a DC Br/BrLess motor?
What type of feedback system would be best? I think that adding an encoders to gain a feedback, thus creating my own servo and design a PID to run it all. Does anyone know of some good position encoders, that are avalible off the shelf?
Would you just shell out and buy a servo?
I don't want to build my own H-Bridge, because I want an all in one package that does all the options i could build anyway, however, there are millions around. Does anyone have a suggestions of a controller they have used?
Additional transistors? will I need to add transistors to allow max unregulated current to flow to the motor, or do controllers have those built in?
So to summerise:
Will it be a DC Brush/Brushless motor in a car compressor?
Is that the right choice of motor for my project?
Are there some good position encoders avalible which will work with the above motor?
What H-Bridge controllers are good, cheap and readily avalible?
Will that H-Bridge come with "everything I need"?
Thanks for you time, and any help would be much appriciated...
Regards,
Steve Mulvenna
I have been planning to build a robot for ages now. I have drawing "cigeratte packet" designs for literally years, but although I am good in some areas, I am hopeless at actually picking a product off the shelf and getting a circuit going.
I am going to finally take the plunge and get buying components to build with.
I have a few questions in this topic (which i know is taboo, but they all lead on from each other)
I intend to build a modular system, where a module is responsible for a specific area's control, these modules will then be linked with a serial bus communication newtork (probably a long time in the future!)
So every journey must begin with a first step, and mine is the motors and motor control module.
What type of motor should I choose? I am thinking that a brush/brushless DC motor is the best choice to start with. I plan to strip this out of a portable car compressor pump (£7.99 from ebay). Will this be a DC Br/BrLess motor?
What type of feedback system would be best? I think that adding an encoders to gain a feedback, thus creating my own servo and design a PID to run it all. Does anyone know of some good position encoders, that are avalible off the shelf?
Would you just shell out and buy a servo?
I don't want to build my own H-Bridge, because I want an all in one package that does all the options i could build anyway, however, there are millions around. Does anyone have a suggestions of a controller they have used?
Additional transistors? will I need to add transistors to allow max unregulated current to flow to the motor, or do controllers have those built in?
So to summerise:
Will it be a DC Brush/Brushless motor in a car compressor?
Is that the right choice of motor for my project?
Are there some good position encoders avalible which will work with the above motor?
What H-Bridge controllers are good, cheap and readily avalible?
Will that H-Bridge come with "everything I need"?
Thanks for you time, and any help would be much appriciated...
Regards,
Steve Mulvenna