WIRING :
Power
Supply 8V DC
+------------------+----------------------+
| | |
Vin
(Raw) VCC Relay Module GND
| | |
| | |
NodeMCU
V3 Relay Module IN Pins Ground (NodeMCU + Relay + Power Supply)
| | |
| | |
D1 (GPIO5)
----------> IN1
D2 (GPIO4)
----------> IN2
D5 (GPIO14)
---------> IN3
D6 (GPIO12)
---------> IN4
D7 (GPIO13)
---------> IN5
D8 (GPIO15)
---------> IN6
|
+---> 10kΩ resistor ---> GND
KODE :
#define
BLYNK_TEMPLATE_ID
"TMPL6WcQ5c_l1"
#define
BLYNK_TEMPLATE_NAME
"Mobil Remote Control"
#define
BLYNK_AUTH_TOKEN "bkVNURBsLa_XXmVWyqeABM4tkUPXwDc8"
#include
<ESP8266WiFi.h>
#include
<BlynkSimpleEsp8266.h>
char
ssid[] = "Tes123";
char
pass[] = "1234Dcba12";
const
int pins[] = {5,
4, 14,
12, 13,
15};
const
int pinCount = sizeof(pins)
/ sizeof(pins[0]);
void
setup()
{
Serial.begin(115200);
Serial.println("Starting...");
for
(int
i = 0; i < pinCount; i++)
{
pinMode(pins[i],
OUTPUT);
digitalWrite(pins[i],
LOW);
Serial.printf("Pin
GPIO%d initialized as OUTPUT and set LOW\n",
pins[i]);
}
Serial.printf("Connecting
to WiFi SSID: %s\n", ssid);
Blynk.begin(BLYNK_AUTH_TOKEN,
ssid, pass);
// Tunggu koneksi WiFi dengan
timeout (contoh 15 detik)
unsigned
long startAttemptTime =
millis();
while
(WiFi.status()
!= WL_CONNECTED && millis()
- startAttemptTime < 15000)
{
delay(500);
Serial.print(".");
}
Serial.println();
if
(WiFi.status()
== WL_CONNECTED) {
Serial.println("WiFi
connected!");
Serial.print("IP
address: ");
Serial.println(WiFi.localIP());
}
else {
Serial.println("Failed
to connect to WiFi");
}
}
BLYNK_CONNECTED()
{
Serial.println("Blynk
connected, syncing virtual pins...");
Blynk.syncAll();
for
(int
i = 0; i < pinCount; i++)
{
digitalWrite(pins[i],
LOW);
}
Serial.println("All
pins set to LOW after sync");
}
// Debug untuk semua virtual pin dari
V0 sampai V5
BLYNK_WRITE_DEFAULT()
{
int
vpin = request.pin
- V0;
int
val = param.asInt();
Serial.printf("Virtual
Pin V%d received value: %d\n", vpin, val);
if
(vpin >= 0
&& vpin < pinCount) {
digitalWrite(pins[vpin],
val == 0 ? LOW : HIGH);
Serial.printf("GPIO%d
set to %s\n", pins[vpin],
val == 0 ? "LOW
(ON)" : "HIGH (OFF)");
}
else {
Serial.printf("Warning:
Virtual pin V%d out of range\n", vpin);
}
}
void
loop()
{
Blynk.run();
}
