SSC-32 and digital servos

aaqilkhan · December 8, 2007, 12:01am

I didnt buy anything yet. I am still researching what I need and what’s available in the market. I will need 15 of HSR-8498 servos which would cost ~$60 x 15 = 900 + cost of a servo controller.

so besides the feedback, will the SSC-32 work with HSR-8498 digital servos ?

zoomkat · December 8, 2007, 12:39am

The quick specs I see at the previously posted link has the below line. You might ask the people you are going to purchase from if the PWM is the standard servo control PWM just to be sure. Also, you will probably need some type of programming interface to actually change any of the default settings for the servo. Looks like the default is 90 deg of rotation instead of 180, and there may be others.

Interface: HMI Protocol, RS-232C Daisy Chain, PWM

robotdude · December 10, 2007, 3:56pm

aaqilkhan · December 10, 2007, 4:23pm

Thanks Jim. Does this servo have 180deg range right out of the box? I dont want to spend more to modify the servo for 180deg. From the info about this servo on servocity, it seems this servo has +45 to -45deg motion only.

Please clarify.

Thanks.

robotdude · December 10, 2007, 6:12pm

Hello Aaqilkhan,

I have no idea what servocity says. But I am telling you what I observed from testing a unit brand new right off the shelf. You’re gonna buy the servos from us right? Hope this helps…

sn96 · December 10, 2007, 6:41pm

If you look at the details (@ bottom Left) it says it has a max 180deg operating angle. It says that it’s a programmable servo, so I am guessing that it only has 90deg rotation out-of-the- box.

robotdude · December 10, 2007, 6:58pm

Why are we discussing servocity’s inaccurate specs? I’m telling you I took one off the shelf and tested it. I observed 180Â° range right out of the box. Brand new. No programmer required.

eddieb · December 10, 2007, 7:14pm

besides if you order them from lynxmotion they will ship them within a couple days at most and you will get e-mail with tracking numbers and your stuff shows up! with servocity… not so much all the time but if you got time to sit and wait and wonder…

aaqilkhan · December 10, 2007, 7:21pm

Hi Jim,

I believe you and I will definitely be ordering the SSC-32, some servos and couple gearmotors featured on your website. But, being a canadian resident, I will have to order from RobotShop.ca to avoid customs, unless theres some way around customs?

robotdude · December 10, 2007, 8:07pm

Yes, I agree, place your order with Robot Shop. Thanks…

br549 · April 14, 2009, 10:30pm

Robot Dude:

aaqilkhan:

Hi Jim Frye,

So there’s no way of getting feedback from the HSR-8498 using the SSC-32? How come theres no servo controller out there that utilizes hitec’s HMI protocol

, considering the growing popularity of digital servos?

For my new robotics project, I really liked the specifications of this servo and its unfortunate that after investing so much in them, I can’t really utilize them to their fullest. Althought, I appreciate **linuxguy’s **idea of dissecting the servo and getting analog info from the POT, I dont want to hack 15 expensive servos.

We are developing a servo controller for them. Remember the 8498’s are a non-standard form factor. That didn’t help. And they aren’t really that old, under two years. The 5980 and 5990 servos have only been availalbe since about the middle of this year. It’s coming.

Can the SSC32 read information from the 5990 yet? Didn’t look like it from the manual. Is this still being worked on?

robotdude · April 15, 2009, 2:40pm

The SSC-32 will never read values from any servo. Its servo ports are output only. Mike Dvorsky the designer of the SSC-32 is working on a controller that can do this, but he’s not had time to make much progress. Basic Micro is also working on a controller for them. They will likely have a solution sooner than Mike and I.

Don’t ask me for a time line for these. I do not know…