Product Description
There is a 1-2 week lead time for this product
3P JST Expansion Board
The ROBOTIS 3P JST Expansion Board provides five parallel ports for expanding a 3-pin TTL DYNAMIXEL communication and power bus. It can be used to create additional connection points when a controller has limited DYNAMIXEL ports or when power and communication lines need to branch within a robot.
Key Features
- Five JST 3-pin ports connected in parallel
- Distributes GND, VDD, and half-duplex TTL DATA
- Any port can be used for the controller, power, or DYNAMIXEL connection
- Useful for branching or expanding a DYNAMIXEL TTL bus
- Mounting holes allow installation inside a robot or control enclosure
Port Configuration
The board does not have designated input and output ports. All five connectors share the same electrical connections, so any port may be used as the incoming connection and the remaining ports as expansion connections.
| Pin | Signal | Function |
|---|---|---|
| 1 | GND | Power return and communication reference |
| 2 | VDD | Shared actuator supply voltage |
| 3 | DATA | Bidirectional half-duplex TTL communication |
Connector Information
- Board header: JST B3B-EH-A
- Mating cable housing: JST EHR-3
- Number of ports: 5
- Communication interface: 3-pin TTL
Compatibility
Compatible with DYNAMIXEL devices and controllers that use the ROBOTIS 3-pin JST TTL connection. Confirm the connector, communication interface, operating voltage, and pinout of every connected device before applying power.
- Do not use with four-pin RS-485 DYNAMIXEL devices.
- Not compatible with AX or MX Series cables that use legacy Molex connectors.
- All connected devices receive the same VDD voltage.
- Use only one power source on the shared VDD bus.
- Turn off power before connecting or disconnecting cables.
- The underside of the board is exposed; mount it away from conductive surfaces.
Package Contents
3P JST Expansion Board × 1
