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ROM version. How to restore the original version ?

Bioloid robot kit from Korean company Robotis; CM5 controller block, AX12 servos..
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Post by inaki » Wed May 31, 2006 8:45 pm

Post by inaki
Wed May 31, 2006 8:45 pm

I am afraid it cannot be a "simple" cable. There must be some electronics within these apparently simple serial connector. Remember that AX servos are managed using TTL signals.
I am afraid it cannot be a "simple" cable. There must be some electronics within these apparently simple serial connector. Remember that AX servos are managed using TTL signals.
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Post by stevo3d » Tue Jun 06, 2006 4:47 am

Post by stevo3d
Tue Jun 06, 2006 4:47 am

inaki wrote:Remember that AX servos are managed using TTL signals.

Good point! Thanks for bringing that up. The Bioloid uses TTL for its serial communication between the CM-5 and the Dynamixels. TTL uses voltages of around 0 volts (for logical 0) and +5 volts (for logical 1). The serial communication to the PC uses RS232, which typically uses voltages of around -10 volts (for logical 1) and +10 volts (for logical 0). The RS232 spec allows for up to 25 volts.

See the Wikipedia document on RS232.
inaki wrote:Remember that AX servos are managed using TTL signals.

Good point! Thanks for bringing that up. The Bioloid uses TTL for its serial communication between the CM-5 and the Dynamixels. TTL uses voltages of around 0 volts (for logical 0) and +5 volts (for logical 1). The serial communication to the PC uses RS232, which typically uses voltages of around -10 volts (for logical 1) and +10 volts (for logical 0). The RS232 spec allows for up to 25 volts.

See the Wikipedia document on RS232.
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Post by VanHelsing » Wed Jun 07, 2006 8:33 am

Post by VanHelsing
Wed Jun 07, 2006 8:33 am

You’re both right of course. And it doesn’t look there’s a lot of simple ‘homebuilt’ potential for the electronics to convert rs232 to ttl if you look at this link.

http://www.piclist.com/techref/io/serial/ttl-rs232.htm
You’re both right of course. And it doesn’t look there’s a lot of simple ‘homebuilt’ potential for the electronics to convert rs232 to ttl if you look at this link.

http://www.piclist.com/techref/io/serial/ttl-rs232.htm
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Post by stevo3d » Wed Jun 07, 2006 8:55 am

Post by stevo3d
Wed Jun 07, 2006 8:55 am

Yeah, it's pretty ugly.
Yeah, it's pretty ugly.
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Post by inaki » Wed Jun 07, 2006 9:13 am

Post by inaki
Wed Jun 07, 2006 9:13 am

I would bet the cable has a MAX232 chip or similar inside.
I would bet the cable has a MAX232 chip or similar inside.
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Post by inaki » Wed Jun 07, 2006 10:22 am

Post by inaki
Wed Jun 07, 2006 10:22 am

Wait a minute, how do they reach 1mbps from the PC serial port ?
Wait a minute, how do they reach 1mbps from the PC serial port ?
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Post by pepperm » Mon Aug 21, 2006 1:25 pm

Post by pepperm
Mon Aug 21, 2006 1:25 pm

Did anyone crack the Dynamixel Configurator cable?

I suspect it could just be a resistor/diode job but the question is which pin? The diode would remove the negative voltage swings and the resistor current limit and or voltage drop. A Max232 would need power which could be derived from other of the serial port pins but is a costly solution to the problem.

Also, just because it is the serial port that is being used doesn't mean the high baudrates couldn't be used by toggling the individual pins on the port directly in software.

Mark
Did anyone crack the Dynamixel Configurator cable?

I suspect it could just be a resistor/diode job but the question is which pin? The diode would remove the negative voltage swings and the resistor current limit and or voltage drop. A Max232 would need power which could be derived from other of the serial port pins but is a costly solution to the problem.

Also, just because it is the serial port that is being used doesn't mean the high baudrates couldn't be used by toggling the individual pins on the port directly in software.

Mark
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Original setting

Post by ryann2k1 » Mon Sep 10, 2007 6:25 am

Post by ryann2k1
Mon Sep 10, 2007 6:25 am

hi guys,
I want to set my cm-5 to the original setting, since i have several changes to the walking parameters throguh BCP. I have tried to re-installed ROM file Bioloid_ver115, but it seems it still the same. It is not back to the original parameters.
any idea?
thanks....

Regards,

ryann2k1
hi guys,
I want to set my cm-5 to the original setting, since i have several changes to the walking parameters throguh BCP. I have tried to re-installed ROM file Bioloid_ver115, but it seems it still the same. It is not back to the original parameters.
any idea?
thanks....

Regards,

ryann2k1
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Post by siempre.aprendiendo » Mon Sep 10, 2007 7:35 pm

Post by siempre.aprendiendo
Mon Sep 10, 2007 7:35 pm

Have you tried to reload the motion data (mtn file)?
Have you tried to reload the motion data (mtn file)?
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Re: Original setting

Post by limor » Tue Sep 11, 2007 1:09 am

Post by limor
Tue Sep 11, 2007 1:09 am

ryann2k1 wrote:hi guys,
I want to set my cm-5 to the original setting, since i have several changes to the walking parameters throguh BCP. I have tried to re-installed ROM file Bioloid_ver115, but it seems it still the same. It is not back to the original parameters.
any idea?
thanks....

Regards,

ryann2k1

in robot terminal you see the old firmware id after you flashed with the 115 ?
ryann2k1 wrote:hi guys,
I want to set my cm-5 to the original setting, since i have several changes to the walking parameters throguh BCP. I have tried to re-installed ROM file Bioloid_ver115, but it seems it still the same. It is not back to the original parameters.
any idea?
thanks....

Regards,

ryann2k1

in robot terminal you see the old firmware id after you flashed with the 115 ?
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Original

Post by ryann2k1 » Tue Sep 11, 2007 2:43 am

Post by ryann2k1
Tue Sep 11, 2007 2:43 am

Hi guys,
I am sorry, it should not be BCP, but Motion file.I have change some parameters in some motions and I forgot already to record the original one. i have redownloaded mtn file or even to re-install my Biloid software..
but still the same...

limor wrote:in robot terminal you see the old firmware id after you flashed with the 115 ?

I just downloaded the ROM file in the cd.

thank you

cheers

ryann2k1
Hi guys,
I am sorry, it should not be BCP, but Motion file.I have change some parameters in some motions and I forgot already to record the original one. i have redownloaded mtn file or even to re-install my Biloid software..
but still the same...

limor wrote:in robot terminal you see the old firmware id after you flashed with the 115 ?

I just downloaded the ROM file in the cd.

thank you

cheers

ryann2k1
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