Were it not for the exsiting librarys (LiquidCrystal and NewPing), I would spend one more day porting my MCS-51 code on LCD1602 and HY-SR05 to Arduino!

There is no function in Arduino’s library to manipulate the Timer/Counter directly. After some searching on the Internet and reading the datasheet of ATmega 328/P I got some ideas on how to code in arduino’s IDE to talk to the timers.