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by IMC Support
Mon Jan 15, 2018 10:45 am
Forum: Velocity and Position Control
Topic: Connect 3 Roboclaws in serie
Replies: 1
Views: 5

Re: Connect 3 Roboclaws in serie

Your wiring is incorrect. There are also several settings that much be set in each roboclaw before you can wire them up correctly. 1. The USB connected Roboclaw must have the USB to TTL Relay mode enabled(set in General Settings of Ion Studio). 2. All Roboclaws need to have the same baudrate set for...
by IMC Support
Fri Jan 12, 2018 9:17 am
Forum: General Discussion
Topic: Voltage clamp
Replies: 1
Views: 8

Re: Voltage clamp

The drive capacity of the signal pin is low. It will slow down the switching time some(takes longer to charge the mosfet gates). But it should work. Make sure you use logic level mosfets or the one we recommend in the forum announcement.
by IMC Support
Wed Jan 10, 2018 10:06 am
Forum: General Discussion
Topic: What encoder to use?
Replies: 1
Views: 20

Re: What encoder to use?

Yes, that is what a quadrature encoder looks like. It will have a power(5v) and ground wire and two signal wires(A and B). Note that alignment of the sensor to the rotating disk is critical. You may want to ask the seller how best to do that. I dont see any obvious builtin method. Also you will want...
by IMC Support
Tue Jan 09, 2018 9:06 am
Forum: General Discussion
Topic: _port attribute not defined
Replies: 1
Views: 18

Re: _port attribute not defined

The roboclaw python library uses the pyserial library. You need to install it.

Also when you uncommented the Linux port constructor did you comment out the Windows port constructor?
by IMC Support
Thu Jan 04, 2018 11:14 am
Forum: General Discussion
Topic: Serial Communication Problems
Replies: 12
Views: 778

Re: Serial Communication Problems

We do not use interrupts(or DMA) for transmitting data on the Roboclaw. Only the receiver buffer uses an interrupt/DMA transfer. This is because transmitting data from the Roboclaw is a low priority action. What you describe as far as how the dir pin is set/cleared is what we effectively do now. Whi...
by IMC Support
Thu Jan 04, 2018 11:09 am
Forum: General Discussion
Topic: Roboclaw 2x7A version 5C?
Replies: 1
Views: 21

Re: Roboclaw 2x7A version 5C?

We removed two sets of pads for "do not populate" components and the board revision was updated to indicate that. The pcbs are absolutely identical in all other respecs. The color of screw terminals my changed from build to build. We have several alternate sources for the terminals and som...
by IMC Support
Thu Jan 04, 2018 11:00 am
Forum: Velocity and Position Control
Topic: Command to read both encoders at once?
Replies: 17
Views: 4226

Re: Command to read both encoders at once?

In general we dont see those bits being used often. The GetEncoders command was setup to be as fast as possible for reading the current encoder positions. For the extended information you will need to use the individual commands. P.S. Based on your description Im not sure your calculation is correct...
by IMC Support
Wed Jan 03, 2018 9:59 am
Forum: Velocity and Position Control
Topic: Attach 2 roboclaw to a raspberry pi
Replies: 1
Views: 51

Re: Attach 2 roboclaw to a raspberry pi

the second Roboclaw should appear as ttyACM1. You can look in your /dev folder to see if it appears when you plug it in and what the name comes up as.
by IMC Support
Tue Jan 02, 2018 10:47 am
Forum: General Discussion
Topic: problem whith roboclaw 2*60A
Replies: 1
Views: 46

Re: problem whith roboclaw 2*60A

1. Make sure you are using the latest firmware(4.1.24). Ion studio will show the correct wiring for bridged mode. Make sure you have your physical wiring exactly as show when you set bridged mode. 2. What control method are you using(RC,Analog, Packet serial?) 3. If you disable bridged mode(and re-w...
by IMC Support
Tue Jan 02, 2018 10:44 am
Forum: General Discussion
Topic: Serial Communication Problems
Replies: 12
Views: 778

Re: Serial Communication Problems

I'll look into it further. Glad it is atleast partially workign for you now.

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