I know that the Victor takes an 8ms low time minimun, but my question is how do the high times inputted into the Victor translate into the Victor’s motor output? This is to say, what high time equates to a full duty cycle, a half duty cycle, etc. What is the conversion used?
**Here are the required input control signal characteristics of the PWM input signal for the Victor and the PWM Outputs for our RC units:
Period for the Mini RC PWM Output: 17.0 ms.
Period for the FRC Robot Controller PWM Output: 26.2 ms.
Maximun Rate: 120 Hz.
Pulse width: 1 - 2 ms
As the positive pulse width varies from about 1 ms to 2 ms, the Victor will range from Full Reverse to Full Forward. The Victor should be in Neutral at about a 1.5 ms pulse width.**
There are several posts that seem to be contradictory on the PWM characteristics the Victor 884 needs. I’d like to update the speed controller as quickly as possible, preferably sending a 1-2ms pulse every 10ms (100 hz). In other words, high for 1-2 ms and low for 8-9ms. The first two make it seem possible, while the second two seem to limit me to 17ms. Can I update at 100hz like I described above?
http://www.ifirobotics.com/forum/viewtopic.php?t=179
http://www.ifirobotics.com/forum/viewtopic.php?t=375
http://www.ifirobotics.com/forum/viewtopic.php?t=303
http://www.ifirobotics.com/forum/viewtopic.php?t=402
Also, the following post says that the there are 94 steps between neutral and full on/off. [http://www.ifirobotics.com/forum/viewtopic.php?t=317
Does this only apply if I use an IFI Robot Controller that has a resolution of 256? If I can generate my own 1-2ms signal with more resolution will the output from the speed controller reflect the added resolution?
The above posts have been edited for better clarity. The maximum rate you can send data to the Victor is about 120 Hz. The 94 steps are set inside the Victor. Therefore if you double the steps to (94x2) =188, the Victor would only respond to every other step. Increasing the resolution going to the Victor will not change the Victor output.](http://www.ifirobotics.com/forum/viewtopic.php?t=317)