Search found 1594 matches

by Basicmicro Support
Fri Oct 14, 2016 9:09 am
Forum: Velocity and Position Control
Topic: Quadrature Encoder Positon Powerup value
Replies: 9
Views: 12609

Re: Quadrature Encoder Positon Powerup value

Correct. QPPS is a hold over from a long time ago. I prefer to think of it as counts of the edges of the quadrature pulses.
by Basicmicro Support
Thu Oct 13, 2016 9:24 am
Forum: Velocity and Position Control
Topic: Quadrature Encoder Positon Powerup value
Replies: 9
Views: 12609

Re: Quadrature Encoder Positon Powerup value

Roboclaw counts each edge of each quadrature pulse on each signal line so 4 counts per period.

QPPS is the maximum speed of the encoder/motor in counts per second.
by Basicmicro Support
Wed Oct 12, 2016 9:09 am
Forum: Velocity and Position Control
Topic: Quadrature Encoder Positon Powerup value
Replies: 9
Views: 12609

Re: Quadrature Encoder Positon Powerup value

1. No, the Roboclaw does not keep track of the quadrature count between power cycles. In order for a quadrature encoder to be used as an absolute position sensor you will need to keep the system powered at all times if there is any possibility of external forces moving the encoder. Note the roboclaw...
by Basicmicro Support
Tue Oct 11, 2016 9:50 am
Forum: General Discussion
Topic: Old RoboClaws... what library should I be using?
Replies: 5
Views: 6386

Re: Old RoboClaws... what library should I be using?

The firmware on your roboclaw is very old. Our changes file doesnt go back that far anymore. The command number hasnt changed though so you should get some data back. Very old firmware had an 8bit value for the current, while the newer ones have a 16bit value. Also the 8bit value was very low resolu...
by Basicmicro Support
Tue Oct 11, 2016 9:46 am
Forum: Velocity and Position Control
Topic: Quadrature Encoder Positon Powerup value
Replies: 9
Views: 12609

Re: Quadrature Encoder Positon Powerup value

Yes, that is one way of doing it. Also you can setup the S4 and S5 pins(for channels 1 and 2 respecively) as Home signal imputs. Then the home signals trigger(eg get pulled low) the respecitive encoder count will be reset to 0. The Home signals will also stop the motors when the motors are moving in...
by Basicmicro Support
Fri Oct 07, 2016 9:18 am
Forum: General Discussion
Topic: Packet Serial Mode: Multiple Motor Controllers
Replies: 14
Views: 18390

Re: Packet Serial Mode: Multiple Motor Controllers

Thanks for the diagram. There is no reason I can see that adding a 2.2k pullup to 3.3v would damage the XBee. I think maybe you will need to talk to the XBee people about whay could cause that. Also make a diagram showing the multiple roboclaw wiring just to be sure. Just to be clear, it is not poss...
by Basicmicro Support
Fri Oct 07, 2016 9:11 am
Forum: Velocity and Position Control
Topic: Question about using roboclaw v5 with arduino uno r3
Replies: 1
Views: 4073

Re: Question about using roboclaw v5 with arduino uno r3

It takes longer to update the manual than it does to update the example code included with the arduino library. We are in the process of updating the manual now. But in general the examples in the arduino library will always be more up to date than the manual examples. We recently changed the arduin...
by Basicmicro Support
Thu Oct 06, 2016 9:01 am
Forum: General Discussion
Topic: Packet Serial Mode: Multiple Motor Controllers
Replies: 14
Views: 18390

Re: Packet Serial Mode: Multiple Motor Controllers

It should not have damaged the XBee pin at all. The Roboclaw in the worst case can only ouptut 3.3v maximum on an I/O and if the pullup was to 3.3v as well then there is no way the pin would have gone higher than 3.3v(the usualy cause of I/O damage is over voltage). Make sure you have a common groun...
by Basicmicro Support
Thu Oct 06, 2016 8:56 am
Forum: General Discussion
Topic: Erratic behavior in ttl with arduino MEGA
Replies: 1
Views: 3128

Re: Erratic behavior in ttl with arduino MEGA

What baudrate are you using? What arduino pins are you using to communicate? Are you using software serial or hardware serial?
by Basicmicro Support
Thu Oct 06, 2016 8:55 am
Forum: General Discussion
Topic: How can i control speed with an quadrature encoder and arduino?
Replies: 0
Views: 3282

Re: How can i control speed with an quadrature encoder and arduino?

If you have the hardware already please call our support line. We will walk you though using the Ion Motion application on a Windows PC to setup the board for use with an encoder.