Netherlands
Asked — Edited
Resolved Resolved by DJ Sures!

Help With Serial Bus Servo (Almost Dynamixel Protocol)

I would like to get some help on serial bus servo's that use almost the same protocol as dynamixel.

BUT all the dynamixel instruction packets and status packets start with:

0xFF 0xFF and then you get ID> Length> Instruction>Parameters>Checksum

like this

User-inserted image

The servo's I want to use are Lobot LX-16A that use the same protocol with one difference: the packets start with 0x55 0x55 and then ID> Length> Instruction>Parameters>Checksum

so my servo's don't react on the dynamixelplugin How can I or someone change the 0xff too 0x55 in the plugin? Is it possible too get the source code for the plugin? or is there another solution? I can't afford real dynamixels and this seemed a good alternative

thanx in advance for your help


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Synthiam
#41  

Is anyone using these servos? Since i updated ARC to now support reading from bi-directional smart servos, i was wondering if i should update the lewansoul plugin to support it as well?

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Canada
#42  

I thought about a Mod one of these would be good. https://www.youtube.com/watch?v=Wgx9B8M3uNM

You can buy the H3S (similar to H3P without the controller or sensors etc just frame and servos ) for ~$350 CAD from China on eBay. Just add iotiny Battery and some sensor is my logic but i don’t own one yet. I would buy if the LD 2015 and LD 2701 lewansoul worked.

MeccaNoid servos would also be good.

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Synthiam
#43   — Edited

The only down fall to the IoTiny is it can’t read servo positions due to lack of hardware users. There’s only two and one is used for camera and other for audio

But that’s a great robot price for the number of servos. You’ll have to hack a power house EZ-B v4 to it

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USA
#44   — Edited

@DJ if you are looking into other smart servos, I've looked into HurkuleX from DST Robot (formerly Dongbu Robot). They have 4 different series and the 060X series carry super high resolution at 12960/360 degrees resolution. I think some of these are comparable to Dynamixels. Pricing falls somewhere in the middle.

http://www.dongburobot.com/jsp/cms/view.jsp?code=100782

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Synthiam
#45   — Edited

I dunno if i trust that company - they haven't paid for an SSL certificate for almost 2 years.

User-inserted image

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USA
#46   — Edited

The Robotshop carries their stock, so someone is communicating and ordering from them. Somewhat legit.

Just a suggestion. They are pretty impressive and are TTL...

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Synthiam
#47  

Understandable... a little shady is all:D < yeah

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USA
#48  

Cautious, is always a better way to proceed.........!!!