• ### Advanced hobby servo control using only a timer and interrupts

- 2 February 2012

Yes, the time between pulses will not be perfectly constant, but that does not matter. I think I wrote quite a bit about that in the earlier posts.

- Jan

• ### Introduction to Jan's blog

- 25 January 2012

Dan,

Thanks for the feedback. It looks like you are aware that this is not the most appropriate avenue for this discussion, so you might want to think about what prompted you to post here before trying to contact us some more conventional way. You do bring up two subjects that I think are worth discussing publicly.

- Jan

• ### Continuous-rotation servos and multi-turn servos

- 18 November 2011

Hello.

The servo is not made for continuous rotation, and it rotating continuously is a sign that you are asking it to go beyond its limit, which could cause it to be destroyed. The standard 1-2 ms range should get you close to the full turn, and you can gradually expand the range while keeping it centered at 1.5 ms to get to exactly one rotation of range.

By the way, you should direct questions like these to our forums or to more direct tech support.

- Jan

• ### Advanced hobby servo control pulse generation using hardware PWM

- 18 November 2011

Hi.

I don't know how you expect me to be able to judge that better than you. However, from the little information I can get from your question, it sounds like you aren't getting the point. This article is about a specific approach to getting many channels of servo control. If you just need one or a few servos, you don't need anything this complicated, and if you need to do many servos, you're probably better off getting a dedicated servo controller.

- Jan

• ### Servo control interface in detail

- 24 October 2011

Hi.

It looks like you might have already asked about this on the forum some, and I don't really have a good answer. I would look around for different servos (you can get metal gears with analog servos, by the way), but if you like the ones you have, you'll have to go for the external power switch route you described. Some of the fancier servos are programmable or configurable, so you might check into whether the no-signal behavior of your unit can be changed.

- Jan

• ### Force and torque

- 7 September 2011

My comment above already covers the easy part: you get a simple tradeoff of speed for torque, so, if you make the motor give you 20% of its stall torque, it will give it to you at 20% less RPM than the no-load RPM. However, calculating how extra weight on the robot translates to torque on the motor is not something you can easily calculate since it depends on things like friction and how the weight is distributed.

- Jan

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