Find a Servo Controller for Your Project

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Discussion Overview

The discussion revolves around finding a dedicated servo controller IC suitable for a project involving a large servo motor that requires about 10 amps. Participants are exploring options for specific integrated circuits (ICs) such as the DA6688, Mitsubishi M51660L, ZN409(419), and NE544, while expressing a preference for not designing a controller from scratch.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant is seeking a dedicated servo controller IC and lists specific models they are interested in, expressing frustration at not finding them through usual suppliers.
  • Another participant suggests using Google for searching, implying that it could yield better results.
  • A participant mentions finding a controller from Yost Engineering but clarifies that it does not meet their specific needs for an integrated solution with trapezoidal feedback control.
  • One participant describes the basic control method for servos but emphasizes their desire for an integrated solution that includes advanced features.
  • A participant considers the possibility of repurposing an old Futaba servo for its controller, indicating a willingness to modify existing hardware.
  • There is a mention of the cost of an obsolete controller, suggesting that designing a new one might be more economical.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on available options for the desired servo controller ICs, and multiple competing views regarding potential solutions and sources remain unresolved.

Contextual Notes

Participants express limitations in their search for specific ICs and the challenges of finding suitable replacements or alternatives. There is an acknowledgment of the complexity involved in designing a controller from scratch versus finding an existing solution.

faust9
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Shucks Howdy y'all.

Well, I have to make a large servo (the motor will pull about 10 amps) which I can do using a PIC od an AVR; however, I'd like to get my hands on a dedicated servo controller if possible. Does anyone out there in internet land know where I can get my hands on a servor controller such as the DA6688 used by Futaba(they used to use this, not sure if they still do) or a Mitsubishi M51660L or a ZN409(419) or even an NE544. Any servor control IC would be great. I don't fell like designing a servo from scratch adding feedback circuitry for speed control and the whole 9 yards when these chips already exist.

Any help would be appreciated.
Thanks a bunch.

PS. I checked the usual sources: Newark, Allied, Mouser, Jameco--no luck.

[edit]Not looking for a circuit to control an existing servo. I need a brand new servo and was wondering if anyone knew of a source for the controller used to make said devices.
 
Last edited:
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willib said:
i didnt see google on that list.. its the first place i look..
http://www.google.com/search?hl=en&q=servo+controller+ic

I did google. The first entrant is for Yost Engineering which manufacture controllers to control standard servos. I'm looking for an actual IC--either one of the one's I've listed or similar.

Servos are easy to control. Just make a 1 to 2mS pulse about every 20Ms and you're done. I'm looking for an intergrated solution that already incorporates trapazoidal feedback control and speed limiting when the position indicator nears its target.

This is more of what I'm looking for though this particular one is obsolete and runs abour 30euro for one(I can sit my lazy butt down and design a PIC/AVR one for $5): http://www.roboterwelt.de/info/sheet/zn409.pdf

I don't know. I'll probably end up hacking apart an old Futaba S148 for the controller and build a suitible H to control my motor.

Thanks for the response.
 
Last edited by a moderator:
Hey, I didn't even see the replacement parts on the Yost site until just now. Thanks. The problem though is that the IC's offered by Yost are not what I'm looking for.
 

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