Please Help.....

Discussions regarding building a walking robot at home. Most of the robots participating at Robo-One competitions are custom fabricated.
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2 postsPage 1 of 1

Please Help.....

Post by kanabalize » Thu May 22, 2008 12:37 am

Post by kanabalize
Thu May 22, 2008 12:37 am

Here is my pickle...

since im not from US, i do not have access to most of the items here..... the only access that i have is to :

1) Robonova servoes,
2) PIC microcontroller
3) Some basic stuff fron spark fun....
4) My programming level is not that high.

and i want to build a humanoid.....

Can you guys help me out here.....i mean what should i do?

should i change the microcontroller? to atmel or arm...are they easy to be programmed?

A lot of people want to build a humanoid but afraid to do so because of their programming skills.... so do you guys have any advice on that?

BTW, if i have a servo controller module, how can i control it....is it

- directly program the program into the controller OR
- using external circuit to control it....

i dont want to hook my humanoid to the computer... i want it to be fully autonomous...

how can i achieve this?

please help.
Here is my pickle...

since im not from US, i do not have access to most of the items here..... the only access that i have is to :

1) Robonova servoes,
2) PIC microcontroller
3) Some basic stuff fron spark fun....
4) My programming level is not that high.

and i want to build a humanoid.....

Can you guys help me out here.....i mean what should i do?

should i change the microcontroller? to atmel or arm...are they easy to be programmed?

A lot of people want to build a humanoid but afraid to do so because of their programming skills.... so do you guys have any advice on that?

BTW, if i have a servo controller module, how can i control it....is it

- directly program the program into the controller OR
- using external circuit to control it....

i dont want to hook my humanoid to the computer... i want it to be fully autonomous...

how can i achieve this?

please help.
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Post by StuartL » Thu May 22, 2008 4:38 pm

Post by StuartL
Thu May 22, 2008 4:38 pm

There are literally thousands of resources on the net to assist you with microcontroller programming. The choice of MCU (micro-controller unit) is largely a matter of preference. I used to like the PICs (hereditary reasons) but I'm using the Atmel Mega128 in the Bioloid and it's very likeable. If you want more computing power there are definitely plenty of choices.

One of the problems you'll have with direct servo control is the number of IO ports. Depending on how you want to interface to the MCU, the constraints of the PCB cavity etc you may find you have to split the servo controller up.

I would recommend using the MCU (or MCUs) to directly interface with the servos. Most modern MCUs are easily fast enough to control hundreds of servos, the limitation is on what else you want to do in hardware and software.

There is a new thread in the Robonova forum about a guy building a new controller for the Robonova. You could piggy back that project with your own ideas or try to convince someone to sell you their RN controller. After all, it's doing exactly what you want?
There are literally thousands of resources on the net to assist you with microcontroller programming. The choice of MCU (micro-controller unit) is largely a matter of preference. I used to like the PICs (hereditary reasons) but I'm using the Atmel Mega128 in the Bioloid and it's very likeable. If you want more computing power there are definitely plenty of choices.

One of the problems you'll have with direct servo control is the number of IO ports. Depending on how you want to interface to the MCU, the constraints of the PCB cavity etc you may find you have to split the servo controller up.

I would recommend using the MCU (or MCUs) to directly interface with the servos. Most modern MCUs are easily fast enough to control hundreds of servos, the limitation is on what else you want to do in hardware and software.

There is a new thread in the Robonova forum about a guy building a new controller for the Robonova. You could piggy back that project with your own ideas or try to convince someone to sell you their RN controller. After all, it's doing exactly what you want?
StuartL offline
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Posts: 350
Joined: Mon Jun 04, 2007 3:46 pm
Location: Thatcham, Berkshire, UK


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