A Timing Device to Train Athletes Agility This aglity training timer uses ultrasonic sensors to detect athletes' movement timing and direction, processes the data with an ESP8266, and transmits it via ESP-NOW.Random movement directions are displayed on an 8x8 LED matrix, and timing is shown on a 16x2 LCD. It helps reduce human timing errors, is easy to use, portable, and can be domestically produced at low cost, enabling precise and effective agility development.