Circuit Documentation

Summary

This circuit is designed to control an AC bulb and an LED filament using an ESP32 microcontroller. The circuit includes a relay module to switch the AC bulb, a resistor to limit current to the LED filament, and switches for manual control. The ESP32 is programmed to connect to a WiFi network and can be controlled remotely via the SinricPro platform.

Component List

1. AC Bulb

   • Description: Standard AC bulb.
   • Pins: P (Phase), N (Neutral)

2. LED Filament 3V

   • Description: 3V LED filament.
   • Pins: GND, Vcc

3. 1 Channel 5V Relay Module

   • Description: Relay module for switching high voltage devices.
   • Pins: VCC+, VCC- (GND), IN, N.O. (Normally Open), COM (Common), N.C. (Normally Closed)

4. Resistor

   • Description: 75 Ohms resistor.
   • Pins: pin1, pin2
   • Properties: Resistance: 75 Ohms

5. 5V Adapter

   • Description: Adapter to convert 240V AC to 5V DC.
   • Pins: AC In 1, AC In 2, 5V, GND

6. Flush Switch

   • Description: Flush-mounted switch.
   • Pins: GND, VCC

7. Rocker Switch (SPST)

   • Description: Single Pole Single Throw (SPST) rocker switch.
   • Pins: 1, 2

8. ESP32 (30 pin)

   • Description: ESP32 microcontroller with 30 pins.
   • Pins: EN, VP, VN, D34, D35, D32, D33, D25, D26, D27, D14, D12, D13, GND, Vin, D23, D22, TX0, RX0, D21, D19, D18, D5, TX2, RX2, D4, D2, D15, 3V3

9. 240v Power Source

   • Description: Standard 240V AC power source.
   • Pins: Live, Neutral

10. USB power

    • Description: USB power source.
    • Pins: +, -

Wiring Details

AC Bulb

• P (Phase): Connected to N.C. pin of the 1 Channel 5V Relay Module.
• N (Neutral): Connected to Neutral pin of the 240v Power Source.

LED Filament 3V

• GND: Connected to VCC- (GND) pin of the 1 Channel 5V Relay Module and GND pin of the ESP32.
• Vcc: Connected to pin2 of the Resistor.

1 Channel 5V Relay Module

• VCC+: Connected to 5V pin of the 5V Adapter.
• VCC- (GND): Connected to GND pin of the ESP32 and GND pin of the LED Filament 3V.
• IN: Connected to D23 pin of the ESP32.
• N.O. (Normally Open): Not used.
• COM (Common): Connected to Live pin of the 240v Power Source.
• N.C. (Normally Closed): Connected to P (Phase) pin of the AC Bulb.

Resistor

• pin1: Connected to D19 pin of the ESP32.
• pin2: Connected to Vcc pin of the LED Filament 3V.

5V Adapter

• AC In 1: Connected to Neutral pin of the 240v Power Source.
• AC In 2: Connected to Live pin of the 240v Power Source.
• 5V: Connected to VCC+ pin of the 1 Channel 5V Relay Module.
• GND: Not used.

Flush Switch

• GND: Connected to pin1 of the Rocker Switch (SPST).
• VCC: Connected to D13 pin of the ESP32.

Rocker Switch (SPST)

• 1: Connected to GND pin of the Flush Switch.
• 2: Connected to D14 pin of the ESP32.

ESP32 (30 pin)

• EN: Not used.
• VP: Not used.
• VN: Not used.
• D34: Not used.
• D35: Not used.
• D32: Not used.
• D33: Not used.
• D25: Not used.
• D26: Not used.
• D27: Not used.
• D14: Connected to pin2 of the Rocker Switch (SPST).
• D12: Not used.
• D13: Connected to VCC pin of the Flush Switch.
• GND: Connected to VCC- (GND) pin of the 1 Channel 5V Relay Module and GND pin of the LED Filament 3V.
• Vin: Not used.
• D23: Connected to IN pin of the 1 Channel 5V Relay Module.
• D22: Not used.
• TX0: Not used.
• RX0: Not used.
• D21: Not used.
• D19: Connected to pin1 of the Resistor.
• D18: Not used.
• D5: Not used.
• TX2: Not used.
• RX2: Not used.
• D4: Not used.
• D2: Not used.
• D15: Not used.
• 3V3: Not used.

240v Power Source

• Live: Connected to COM pin of the 1 Channel 5V Relay Module and AC In 2 pin of the 5V Adapter.
• Neutral: Connected to N pin of the AC Bulb and AC In 1 pin of the 5V Adapter.

USB power

• +: Not used.
• -: Not used.

Code Documentation

sketch.ino

#ifdef ENABLE_DEBUG
    #define DEBUG_ESP_PORT Serial
    #define NODEBUG_WEBSOCKETS
    #define NDEBUG
#endif 

#include <WiFi.h>
#include "SinricPro.h"
#include "SinricProSwitch.h"

#define WIFI_SSID         "Wifi1"
#define WIFI_PASS         "U9mpdfjj3"
#define APP_KEY           "8073da43-50a1-415d-bb7d-09b7d66f7e74"
#define APP_SECRET        "af4bb54f-bab6-41df-88a1-b31308a3dc55-4a2218f5-d905-4700-a956-25b532156dcf"
#define SWITCH_ID         "6772b86f13f98f141618c214"

#define BAUD_RATE         115200               // Change baudrate to your need
#define SwitchPin1        13
#define SwitchPin2        12
#define RelayPin1         23
#define RelayPin2         19
#define wifiLed           2      //D2

int toggleState_1 = 0; // Define integer to remember the toggle state for relay 1
int toggleState_2 = 0; // Define integer to remember the toggle state for relay 2

bool SwitchState_1 = LOW;
bool SwitchState_2 = LOW;
bool myPowerState = false;
unsigned long lastBtnPress = 0;

bool onPowerState1(const String &deviceId, bool &state) {
  Serial.printf("Device %s turned %s (via SinricPro) \\r\\n", deviceId.c_str(), state ? "on" : "off");
  myPowerState = state;
  digitalWrite(RelayPin1, myPowerState ? LOW : HIGH);
  return true; // request handled properly
}

bool onPowerState2(const String &deviceId, bool &state) {
  Serial.printf("Device %s turned %s (via SinricPro) \\r\\n", deviceId.c_str(), state ? "on" : "off");
  myPowerState = state;
  digitalWrite(RelayPin2, myPowerState ? LOW : HIGH);
  return true; // request handled properly
}

void handleButtonPress() {
  unsigned long actualMillis = millis(); // get actual millis() and keep it in variable actualMillis
  
  if (digitalRead(SwitchPin1) == LOW && SwitchState_1 == LOW && actualMillis - lastBtnPress > 1000) {
    myPowerState = !myPowerState; // flip myPowerState
    digitalWrite(RelayPin1, myPowerState ? LOW : HIGH); // toggle relay state
    SwitchState_1 = HIGH;
    Serial.println("Switch-1 toggled");
    lastBtnPress = actualMillis;
  }

  if (digitalRead(SwitchPin1) == HIGH && SwitchState_1 == HIGH) {
    SwitchState_1 = LOW;
  }

  if (digitalRead(SwitchPin2) == LOW && SwitchState_2 == LOW && actualMillis - lastBtnPress > 1000