Dynamixel RX-64 with SD 21 Controller board
Dynamixel RX-64 with SD 21 Controller board
by [Chris]
Tue Dec 11, 2007 8:25 pm
Hi guys,
I'm new here as well as in the world of robotics. Anyhow, I was thinking of using the SD21 (http://www.robot-electronics.co.uk/htm/sd21tech.htm) to control my 21 Dynamixel motors. However the connections have become a problem for me. And therefore I was wondering if there are any cable convertors that convert the RS485 connection to the one used by the SD21 board?
Thanks for any answers in advance.
I'm new here as well as in the world of robotics. Anyhow, I was thinking of using the SD21 (http://www.robot-electronics.co.uk/htm/sd21tech.htm) to control my 21 Dynamixel motors. However the connections have become a problem for me. And therefore I was wondering if there are any cable convertors that convert the RS485 connection to the one used by the SD21 board?
Thanks for any answers in advance.
by JonHylands
Tue Dec 11, 2007 9:16 pm
The Robotis servos (including the RX-64) do not work like normal servos, and you cannot control them with a normal servo controller board like that one.
You need an RS-485 serial connection running at 1.0 Mbps to talk to one or more RX-64s (they are all connected on a serial bus).
You also need to provide roughly 18 volts to power these servos.
I would strongly suggest you download and read the RX-64 manual, which has a lot of information regarding interfacing.
The USB2Dynamixel sold in this store:
http://robosavvy.com/store/product_info ... cts_id/222
handles talking to both the AX-series and RX-series devices. I believe you need to provide power to the bus separately, but the USB2Dynamixel handles the actual bus interface from your computer's USB port.
- Jon
You need an RS-485 serial connection running at 1.0 Mbps to talk to one or more RX-64s (they are all connected on a serial bus).
You also need to provide roughly 18 volts to power these servos.
I would strongly suggest you download and read the RX-64 manual, which has a lot of information regarding interfacing.
The USB2Dynamixel sold in this store:
http://robosavvy.com/store/product_info ... cts_id/222
handles talking to both the AX-series and RX-series devices. I believe you need to provide power to the bus separately, but the USB2Dynamixel handles the actual bus interface from your computer's USB port.
- Jon
