Voltage regulator to control relay module GPIO 3.3V to 5V

May 4, 2014, 11:47 am by: lukke

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Voltage regulator to control relay module GPIO 3.3V to 5V
What do you need:
1 Resistor - about 4,7 kilo Ohms
2 Diodes - 1N4148 or similar voltage drop in the forward direction at least 0.7 V/10 mA
A few wires

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