Introduction: Interphone Upgrade
This instruction describe how to upgrade standard intercom, to allow you open the door by smartphone.
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Step 1: Components Needed
- PCB Adapter for ESP8266
- Low-Dropout Linear Regulator LM1117 3.3V
- Capacitor 10uF
- Capacitor 100nF
- Capacitor 100uF
- Resistor 300R
- Resistor 1K
- 3x Resistor 10K (you can skip R2 and R3 resistors if you use PCB adapter)
- Transistor BC547
- Micro relay
- 5V power supply
- Universal PCB
- Gold pins
Step 2: Schematic Diagram
Connect all the components as per the schematic diagram
Step 3: Software
Flash ESP8266 using this firmware