# Arduino UNO R4 WiFi 4WD 2D SLAM Radar Robot

- Source: Reddit r/robotics
- Published: 2026-10-27T20:07:32.000Z
- RoboHot: https://robohot.news/en/items/b2omlxzfl3bhulicqvclciq47
- Original: https://www.reddit.com/r/robotics/comments/1xh38vj/arduino_r4_wifi_4wd_slam_radar_2d_robot/

## Summary

A four-wheel-drive autonomous exploration robot based on the Arduino UNO R4 WiFi that can navigate paths and mazes and detect surrounding obstacles. It uses a servo-mounted ultrasonic sensor to perform 180° radar scanning and transmits real-time telemetry over Wi-Fi to an interactive web dashboard, which reconstructs a 2D vector map of the surrounding walls.