Connector selection for DFRobot Romeo ESP32 board
love.forcircuits 2026-05-23 02:39:02 247 Views1 Replies I’m building a mobile robot using the DFRobot Romeo ESP32 board. Several sensors disconnect during vibration and movement. The jumper wires also loosen during repeated testing sessions.
I want stronger cable retention for permanent module connections. The robot uses encoders, ultrasonic sensors, and motor drivers. Battery current sometimes causes connector heating during operation. I found this guide explaining which connector is attached to each conductor with pins but I am not yet clear. Which connector families work best for compact robotics projects?
Should I replace Dupont wires with JST or Molex connectors?
I also need connectors supporting frequent maintenance and quick replacement.
For a mobile robot, replacing loose Dupont jumpers is a good idea. Dupont wires are fine for bench testing, but they are not reliable for vibration or repeated maintenance.
Recommended picks:
• Sensors and encoders: use the board/module’s existing Gravity/JST-PH style cables where possible. For stronger retention, JST-GH locking connectors are better.
• Battery or motor power: XT30 for inline power connections, or the board’s original motor/power terminals. Do not use Dupont or PH2.0 for high current.
• Frequent maintenance: use keyed locking connectors and add strain relief near the board.
Connector heating is a warning sign. It usually means the connector, crimp, wire gauge, or contact resistance is not suitable for the current, so the power wiring should be upgraded rather than just tightened.
Yx 