SSC-32: Signal doesn't reach servos from microcontroller

The testing I asked you to do does not require any additional items… You have everything right there to do it…

I asked you to measure a voltage. You using mA terminology which is a way to measure current. Measuring current will be a short between the two meter leads!

You already said this…

This is what I’m trying to get you to do again. :unamused:

sorry, I miss-wrote it 12-15mV. However I’m going to buy 2 new 9V battery tomorrow. One for the SSC-32 and one for the multimeter I use.

I uploaded a video:
dismal.web.elte.hu/

and sorry for every mistakes I make :frowning:

Try the test again, but on a different servo bank. Use 8, 16 or 24. There’s a possibility that the first servo bank isn’t working properly.

I’ve tested all slots between pulse and ground I could measure 4.8V except for the 0servo slot (it’s around 0)
On slot 24 I tested everything:
pulse-vs2: 2.5V if I turn of the VL support I measure 5V
vs2-ground: 7.5V
pulse-ground: 5,5V

Still I’ll buy new battery for my multimeter too :frowning:

ok tested now again. now all pins seems to work (I don’t understand how is it possible but on servo 0 pin too)
between ground and pules I can measure constant 4.97V and between

What do you mean “seems to work”?

yesterday I measured 0.something on pin 0 now I can measure around 5V on it to (still no movements).

Ok When I power up my SSC-32 here I get 0vdc measuring from ground to the signal pins.

When I connect to LynxTerm and click all=1500 I get 0.370vdc on every signal pin.

When I click all=0 I again get 0vdc on these signal pins.

Note signal pins are the pins on the inside of the board, the power row is in the middle and the outside row is ground.

There is only one way to get 5vdc on the signal pins. That is to type in #0 H [enter]

Please try this and reply back in great detail as to what results you get.

So
I connected only the 9V battery to VL (rs232 not connected, VL=VS1 removed, all other jumpers are on).
I measured voltage between any pulse-ground pins and I measured 4.97V. No difference if I connect power to VS1 or not.
When I connected power to VS1 and connected the rs232 to (led lights) I measure 4.97V
After sending the signal I measured the very same thing, 4,97V (now led doesn’t light).
If you want I can broadcast pictures or a video of it.

Sigh…

Did this really happen?

I’m at a loss. Yes take pictures. Take closeup pictures of the front and back of the board. As close up as possible. Picture and video, sure anything. I have no idea what is going on.

Are you still able to get a reply when you type VER?

I’ve made the video, now I’m uploading it right now. Someone told me that is is possible that the Atmega168 is partially wrong, and that’s why I can measure 5V on the last 6 legs of it (from 23-28) is it possible?

“I also measured all pulse pins with a ground and I measured about 5V except for pin0 where is only 0.2V I don’t now if it’s natural”
and yes it really did happen.

here it is:
dismal.web.elte.hu/index2.html

Alright I’m convinced. If I hadn’t seen it I wouldn’t have believed it. I have never had an SSC-32 fail like that before. Where are you located and who did you purchase from? We need to replace the SSC-32. :blush:

No problem :slight_smile: I was just a bit frustrated because I felt that I’m a moron :slight_smile:

I’ve bought it from here:
robotshop.com/lynxmotion-ssc … oller.html
they were the only ones who could deliver to my location. I’m living in Hungary in middle-Europe.

by the way thanks for everyone who tried to help me :slight_smile: and also thanks for Robot Dude for replacing it :slight_smile:

are we going to continue the conversation here about replacement or via e-mail?

thx again a lot.

helpless students who are no more he helpless :slight_smile:

Email is fine from here on. [email protected]

I’m sorry it took so long to get to the actual problem. :confused:

I have received this from Robot Shop. You are CC’ed in the email.

RMA has been authorized.

Thanks Jim.

Coleman Benson B.Eng., B.Ed.
Robotic Specialist
robotshop

no problems at all :slight_smile: thx for you help and your patience.
best wishes

One last stupid question.

In a local store I can buy this battery.
rc-car-online-shop.de/lshop, … 955,.htm
This is a 6.6V LIFE battery. I know the ideal voltage for VS1 would be 6.0V but is it possible to use this without damaging the SSC-32 or the servos? Or even more is it possible to use it on VL with VL=VS1 and VS1=VS2 pins on? If so I’ll buy one :slight_smile: thanks for your help once more :slight_smile:

Regards

Their info says you can connect directly to the receiver. Servos also plug directly into the receiver, so it looks like a really nice battery for robotics! 8)

From their website.
Without any extra regulator, the battery can directly be connected to the receiver. Maximum capacity combined with lowest possible weight – the power of tomorrow!

thx and the final question I promise. One of my friends mentioned that there are 6V batteries for scooters. They are cheep. Can I use them too?