Balancing Bot

S

sjponder

New Member

• Jan 5, 2005

• #21

I see this has been suggested already, whoops.

 

S

spindrah

New Member

• Jan 9, 2005

• #22

wow you're in for a lot of work!!
but its great when you get it working

here is my balancing bot
I use ir LED's and Transistors to see the distance from the floor
good luck with your project!

**broken link removed**

 

MrMikey83

New Member

• Jan 9, 2005

• #23

Wow, awesome job spindrah! Yeah, I know mine is going to be even more work and code because of the gyro, but with the help of this board, avrfreaks, as well as a Mr. Anderson who built nBot, I think I will do well on this project. I'm learning so much just from researching, stuff we didn't cover in my class is becoming so easy to integrate into the code and design. This is why I like labs so much, theres so much you can learn by actually doing it.
~Mike

 

Nigel Goodwin

Super Moderator

Most Helpful Member

• Jan 9, 2005

• #24

Yes, looks great!.

Have you got any video clips of it in action?.

As for 'MrMikey83', have you considered starting off using simple sensors like this?, you could get it all working and the biggest part of the software proven and tested. Then replace the ground sensors with gyro's later, with minimal software changes required!. It would also extend the scope of your project, by showing how to upgrade and improve the basic design to a more functional one, based on varying conditions (ie, non-flat ground).

 

S

spindrah

New Member

• Jan 9, 2005

• #25

thanks
MrMikey & Nigel

I do have a Movie of it, BUT I don't know how to post it!!!

if you tell me how to do this i will be glad to post it.

 

Nigel Goodwin

Super Moderator

Most Helpful Member

• Jan 9, 2005

• #26

spindrah said:

thanks
MrMikey & Nigel

I do have a Movie of it, BUT I don't know how to post it!!!

if you tell me how to do this i will be glad to post it.

Click to expand...

The best bet is to place on some webspace somewhere, and post a link to it here - it may be too large to be uploaded here?.

 

MrMikey83

New Member

• Jan 10, 2005

• #27

So far, I am able to read the accelorometer and have found info on making a filter to combine both accelorometr and gyro.

I am now trying to get the remote control part to work. I have a JR XF421 radio control and the receiver has a PWM output for servos.
I am trying to read the PWM through a normal input pin. Can I do this or must I use interrupts? I have 5 channels on the receiver and only 2 interrupts, thats why I am using normal inputs.

I know I need to use the timer, but I have been having trouble trying to find info on using it. The datasheet is confusing to me and my class textbook is of some help but am still stuck.
I need to know what register the timer1 count is located in. I need to define this, then measure once when the pin goes high and again when it goes low, then find the difference.
~Mike

 

JFDuval

New Member

• Jan 10, 2005

• #28

Hello!


Spindrah, send me your video by e-mail if it's less than 10Mo or by MSN Messenger (if you have it). I'll put it on internet for you, on the server of a friend.

 

S

spindrah

New Member

• Jan 10, 2005

• #29

MrMikey

i didn't see what micro you are using

but if it as a pic the reg is TMR1H and TMR1L (high and low byte of 16bit timer)
you also need to set up the T1CON register

also you have to read the low byte before you read the high byte
and you must write the high byte before you write the lowbyte
this is for the 18fxxx chips and is a must

JFDuval said:

Hello!


Spindrah, send me your video by e-mail if it's less than 10Mo or by MSN Messenger (if you have it). I'll put it on internet for you, on the server of a friend.

Click to expand...

ok i will send it tonight

thanks

 

MrMikey83

New Member

• Jan 10, 2005

• #30

I'm using an ATmega32

 

MrMikey83

New Member

• Jan 11, 2005

• #31

OK, I beveive I have found the correct Timer register to call. Its TMR1. Should I use the 8 bit timer or the 16 bit timer? Does it matter?

Can anyone give an example code of how to read the PWM from the receiver with PIND.6?

Thanks!
~Mike

 

JFDuval

New Member

• Jan 12, 2005

• #32

Hello!

Spindrah just give me his video. Follow the link to see it.

=> www.machivi.ma.cx/jfduv/Vidéos/side_v.avi

 

MrMikey83

New Member

• Jan 12, 2005

• #33

Not working for me.

 

JFDuval

New Member

• Jan 13, 2005

• #34

Yeah, me too I can't see it. I posted it because maybe they are some people who are able to watch it.

 

S

spindrah

New Member

• Jan 13, 2005

• #35

I can't see it

could you see it before you posted it?

 

Nigel Goodwin

Super Moderator

Most Helpful Member

• Jan 13, 2005

• #36

Yes, the URL doesn't work, there appears to be no directory called 'jfduv'?.

 

MrMikey83

New Member

• Jan 14, 2005

• #37

Time to take back my thread...

Here is my progress on the balance bot. I have built a frame from aluminum stock from Lowes. The gears, motors and wheels are from a local RC hobby store. The batteries will be strapped to a peice of plexiglass on top of the two poles that extend upwards off the bot.

The radio controller I am using as well as the receiver are in the pic. The accelorometr and Gyro are on the small breadboard in front of the controller.

**broken link removed**

 

Nigel Goodwin

Super Moderator

Most Helpful Member

• Jan 14, 2005

• #38

Cool! - I look forward to seeing how you get on!.

 

MrMikey83

New Member

• Jan 14, 2005

• #39

I might need larger diameter wheels...not a problem to change them though.

 

JFDuval

New Member

• Jan 14, 2005

• #40

Hello!

The link is working, it's the video that can't be seen (by some people at least). The directory jfduv/ exist. Don't forget the slash at the end.