Hi everyone.
i want to make a small product the't when i charge it he will be quiet, and when i'm stop charging it he will make a strong alert sound for like 15 seconds. i want it to have a car electricity exit.
i think i suppose to use a capacitor , resistor and timer but i don't know how to make it like a small and nice product.
i need your help in what component's to buy, how to build the circuit and how to make it accessible for use.
i want to make a small product the't when i charge it he will be quiet, and when i'm stop charging it he will make a strong alert sound for like 15 seconds. i want it to have a car electricity exit.
i think i suppose to use a capacitor , resistor and timer but i don't know how to make it like a small and nice product.
i need your help in what component's to buy, how to build the circuit and how to make it accessible for use.