Black has already been assembled. Red I'm planning. Blue, planning but not sure if necessary.
The addition is to connect ringer to the arduino. A transistor is used to switch the current on. In theory when power is applied to the the first pin of the transistor from the arduino, current can flow from the battery to the ringer circuit.
PS should I add components anywhere? Such as a resistor in between the voltage booster and ring generator
PPS change 7V to 9V for battery. Voltage booster can handle up to 11.5V
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The addition is to connect ringer to the arduino. A transistor is used to switch the current on. In theory when power is applied to the the first pin of the transistor from the arduino, current can flow from the battery to the ringer circuit.
PS should I add components anywhere? Such as a resistor in between the voltage booster and ring generator
PPS change 7V to 9V for battery. Voltage booster can handle up to 11.5V