FAQ

HiI've been playing around with Veyron controller and Visual servo controller to USB interface without problem. Now I want to move to wireless Bluetooth XBee interface. Bluetoot...

userHead JaneYu 2016-12-17 20:40:10 12 Views13 Replies

Hi
I've been playing around with Veyron controller and Visual servo controller to USB interface without problem. Now I want to move to wireless Bluetooth XBee interface. Bluetooth link is established, blue LED RX1 blinks with every received transmission telegram but Veyron doesn't respond. Has anybody tried this? I'll appreciate very much any help!
Thanks!

2022-10-19 23:09:25

Is there a back up to the DFServo tutorial? The site is empty. https://wiki.dfrobot.com/Vi...

userHeadPic JaneYu
2021-04-21 23:05:57

How many Amps can this board handle. Since it can control 24 servos I assume its more than 5A.

userHeadPic JaneYu
2020-11-20 22:54:56

Hey,
I've figured out that the Rx and Tx are I2C ports. This is a synchronous protocol, and works on a clock. The gravity shield requires you to insert a battery cell for a clock and I had not inserted it. Once I did that, the driver worked like a charm.

userHeadPic JaneYu
2020-11-17 18:44:58

I've done as all of the above, the switch works properly, the power supply is securely connected and 5V and 9V is given, after connecting the uart, the RX light on the driver is blinking, but the motor is still not moving. My baud rate is 9600 and the switch is also at A:0 B:1. I don't know why its not working.

userHeadPic JaneYu
2020-11-17 13:59:59

What is the proper procedure(connection and code) to connect the veyron servo driver to the Gravity: arduino shield for raspberry pi?
The shield has an arduino Leonardo chip. I've tried connecting the wires via the RX and TX pins and used the Seria1 interface, the communication link is established between arduino and the driver (RX link on driver blinks) but the servo does not rotate, im guessing it does not understand the code. I've tried setting the switches and using different baud rates, but it still doesn't work. Any suggestions?

userHeadPic JaneYu
2018-08-11 00:13:50

yes, I would like to control wirelessly and using command to move some servos as a group. Thanks for reply :)

userHeadPic JaneYu
2018-03-02 19:59:24

Hi.. I am new on using Veyron Servo Driver (24 Channel), does anyone know how to download action group servos to "Veyron Servo Driver"? So.. later I just send command to move servo using group action.

userHeadPic JaneYu
2017-07-23 19:19:09

Hi I am Giannis,
I have a veyron24 and 2 problem and 1 question
1) my pc has windows 10 64bit, the visual servo cotroler no run, and the windows driver no compatible and I can't connect my pc with board.
2) how to save the servo offset to board?

userHeadPic JaneYu
2017-05-20 01:27:00

Hi,

Upon powering, the default position is 500us for all 24 channels. Suppose I have servos attached which have different positions, I know these positions but the servo driver not, how can I update these positions to the servo driver WITHOUT triggering movement?

userHeadPic JaneYu
2017-05-20 01:24:25

It returns a string, example: query is "QP1"(notice it must be attached and followed by a character return), string will be "pos1:500us" . There is nothing that explains that in the wiki, nor that the query isn't zero based, so you can have a number in between 1 and 24 and not in between 0 and 23, like you have when you send a position.

userHeadPic JaneYu
2016-12-20 03:28:44

Hi Cherudim, thank you very much for your message. Yes, I had tried every baudrate but after reading your message I've tried again and, this time, it worked! After few seconds it stopped working, and I had to reset both Veyron and my computer to have it working again. I still don't know the reason, but I'm investigating it. I'll post again when I find the reason, or at least, a way to reproduce it.
Thank you again!

userHeadPic JaneYu
JaneYu wrote:

That is OK. Actually I‘m making a robotic arm based on veyron and DF 6 dof robotic arm

2016-12-20 11:00:46
JaneYu wrote:

Hi again
After few more tests, I found that Bluetooth link is lost when I try to move 3 or more servos at the same time using Visual Servo Controller. Perhaps some overflow happens to the buffers due to the relative low baudrate (9600 bps), since it doesn't happen when using the USB interface (115200 bps); of course this is just a guess.
I just want to share this, just in case someone else is having the same behaviour.
In my final application I won't use Visual Servo controller, so I'll take care of not sending too long or too frequent messages. I hope this will help.

2016-12-20 19:37:06
2 Replies