Junior Member level 3
hi, i have a keypad and 16x4 connected to an arduino. the start button in the keypad triggers a relay and show a count in the lcd. also, there is a pause/resume key as well. when the pause key is pressed once, the arduino pin powering the relay is made low. the count is paused in the lcd. while the key is pressed again, the relay pin is made high and the count resumes in the lcd. This works fine for 5-6 times until the lcd goes blank after a while. can someone suggest any solution? Thanks in advance.