> > > You obviously haven't tried it. If there is no load at the servo > (e.g., when it is used to aim a sharp sensor), you can hear each > irregular pulse. It moves slightly off and then corrects again. But > when there is load on the servo, it moves away more (and takes more > time to correct). >
I'll add all servos are rather unique, interrupted pulse may not have the same impact. > > I did numerous implementations of servo control and the reason I did > not get to writin a lib yet is because it is pretty time-consuming to > do it right. And IMHO it is not worthy to jallib to release a clumsy > lib. But maybe my standards are too high and adds this library value > to jallib, even if it does work properly when interrupts are used... > If this is that time-consuming to reproduce PWM outputs in software, we should use a dedicated chip (I'm back on this, no surrender Joep). Few months ago, I found the following links: - IC to control LEDs with PWM. May be used for PWM http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4539 - another IC for LEDs control, this one has been used in Arduino project IIRC: http://focus.ti.com/docs/prod/folders/print/tlc5940.html - some thoughts about PWM software implementation: http://letsmakerobots.com/node/6282 - Microchip AN about PWM software impl. for LEDs, too: http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1824&appnote=en524189 As a reminder, "servo controller" topic on jallib: http://groups.google.com/group/jallib/browse_thread/thread/53603e9bf0b95d78 > > On Jan 22, 1:46 pm, Sebastien Lelong <[email protected]> > > As far as I'm concerned, I have not much problem with PIC being dedicated > to > > moving servos, without being able to do other things. I see this as part > of > > a servo controller board (even shield, for jaluino), with a dedicated PIC > on > > it. > > It is not about a board dedicated to move servo's. It is about a board > dedicated to moving *one* servo. > Yes, of course. I mentioned 8 servos for one PIC. > And what is the value of board that can controle a servo, but has > (hardly) any ability to receive information on the desired setpoint of > this library? > > IMO a proper library should enable an application (servo controller) > that support multiple servo's and communication (i2c, serial) at the > same time. > Sure ! Cheers, Seb -- You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/jallib?hl=en.
