lonerapier.xyz

Robotics

3 min read

Logs

  • 1408: ordered the parts needed to create an RC car.
    • arduino, sdcard, wires, batteries, chassis, motors, sensors
  • 2008: ready with a working RC car, using arduino and DC motors.
    • Next step: make the car more robust, and attach a ultrasonic sensor to make it autonomous 2108: Next next step: create a robotic arm, and attach to the car. 2608: attached ultrasonic sensor, and added autonomous car code. 2808: discovered LiDAR + SLAM with ROS2 for efficient localisation and mapping of environment. Is it effective for only closed environments? Can it remember open world maps as well?

Notes

  • Arduino R4 WiFi
    • What’s the ideal input power range?
    • PWM pins
    • EN pins
  • How does DC and servo motors work internally? What’s the difference?
  • Do I need a voltage controller for motors or Arduino?
  • Using DIY fiberglass board for chassis is quite effective.

Questions

  • image sensor, ultrasound sensor
    • Sonair
    • How does ultrasound sensor work?
    • how does lidar work?
    • why is lidar so expensive?
    • can you make ultrasound work at the same accuracy as lidar?
    • what pixxel is doing is creating imaging sensors to map earth for satellites? doesn’t on-ground robots require same setup?
  • Actuators, motors
    • What kind of motors are needed by current robots?
    • what kind will be required by future robots?
    • Will all sensors and motors be manufactured inhouse by these robot startups or exported to a manufacturer?
    • what’s the role of opensource drivers here?

Resources

Graph View

Backlinks