Hi, I come back again. You can see the picture, I connet the ax-12a with my computer, and I use" Dynamixel wizard 2.0" to scan the ID, but the line is empty(which should have id number and model of motor). Also I had success to scan the id and model of ax-12a with same means of connet three month ago.
And at Arduino end, I know the id and baudrate of my ax-12a , but when I upload the example program, it doesn’t work.
I has change the computer , power ,3p line, system(ubuntu),even ax-12a, but all doesn’t work.
The process of things is like this.
First,most import thing is I want to control my ax-12a ,but failed. So I want to scan the ax-12a in dynamixer wizard to find out what happend,but the line is empty. I change the required items of connet, all doesn’t work.
I would like to know what happend?
What is the brand and model number of that USB to TTL module that you are using? Does it convert USB to half-duplex like the U2D2?
I am very happy to tell you the information, because the one pin of TTL is failed, I think my soldering error the few days ago caused this to happen. Now I can control my ax-12a with OpenCM9.04.
But the unscannable situation still exists, I don’t know what cause the problem. I gusses maybe the USB to TTL is failed. But I had success reset ID of my ax-12a before with same model.
My module of USB to TTL is a small brand. I don’t know if it can convert USB to half-duplex like the U2D2.Because I don’t have U2D2 now. But I convinced it can help me scan the ID the premise is the module is intact.
Thanks for your reply.
Hope you have a nice day!
Can you show a screenshot of Dynamixel Wizard when you tried to connect to the AX12 via your USB-TTL converter? Is this USB-TTL converter named USB2AX? Like shown below:
Good afternon,Sir. I use the converter as above. I gusses maybe it failed. Now,I can control my AX-12a, so I’m not eager to solve this problem now.
And, when I scan my ax-12a by the converter, the Dynamixel wizard is no response, the line is empty ,just like the above. I gusses the converter is failed. Because the 3pinTTL ,ax-12a, and power and other, all intact.
Two days ago I wanted to scan the ID of the servo because I didn’t find the reason why I couldn’t control the servo, now I solved this problem. So if I want to change the ID or else of ax-12a, I will buy a new converter, but now I haven’t demand.
Thanks for you reply.
Hope you cuold have a nice day!
Thanks for sharing this info about USB2HDXL. It looks like that it should work like the U2D2 ie converting from full to half duplex.