Keep track of Mini4WD lap times using your phone camera. Place the phone alongside the track, with the red dotted line on the camera preview facing on a track lane. This app will record your lap times as the Mini4WD passes under the camera. (via Mini4WD Lap Timer - Android マーケットのアプリ)
ミニ四駆ラップタイマーの Androidアプリ
1 month ago