TECHSOUL Tinker-Club • Hands-On IoT Workshop

Pick a Project or Test Any Component
Materials + Code + Wiring + Hints & Outcome

Whether you want to build a complete project (like the Dual-Sensor Room Counter or Gas Leak Alarm) or simply calibrate and test a single sensor (like the HC-SR04 or MQ-2), get instant schematics, ready-to-flash code, and real-time outcomes.

Expected Outcomes Included

Tinker-Club Hints & Fixes

HOW TO USE THIS HANDBOOK2 Simple Flows

Flow 1: Build a ProjectClick →

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Flow 2: Test a ComponentClick →

Search or select any component (Ultrasonic, MQ-2, DHT11, PIR, Buzzer) → Get isolated test circuit → Verify calibration code → Test with live simulator.

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Basic Experiment #1Digital Output & Sound Beginner

Blinking LED & Buzzer

Master digital pin output control by driving a visual indicator (LED) and audible alert (Buzzer) in synchronization with timed delays.

Expected Outcome & Behavior:

LED illuminates and the buzzer emits a continuous beep for exactly 1 second, then both silence and switch off for 1 second continuously.

Tinker-Club Quick Hints:

Anode (+) is the longer lead of the LED; flat notch side is cathode (-).
Always insert the 220Ω resistor in series with the LED to protect the digital pin.
Active buzzers will sound a steady pitch as soon as 5V HIGH logic is supplied.

Required Materials for this Project (6)

Click any component to test its individual wiring & calibration code

Live Circuit Simulator & 9600 Baud Serial Monitor

Directly test virtual sensor controls

Live Virtual Testbed • Blinking LED & BuzzerInteractive

Real-time breadboard logic & Serial Monitor simulator

5mm Red LED (D13)

State: LOW (0V OFF)

Active Buzzer (D8)

Beep: IDLE

Quick Pins:D13 → LED Anode (+) via 220Ω ResistorD8 → Buzzer Positive (+)GND → Common Ground Rail

Serial Monitor (COM3 / /dev/ttyUSB0)

9600 baud

No serial stream yet. Board initialized at 9600 baud...

Wiring Connections

5V Logic Standard

Arduino Pin	Connect To Module	Notes
D13	LED Anode (+) via 220Ω Resistor	Cathode (-) connects to GND
D8	Buzzer Positive (+)	Buzzer Negative (-) connects to GND
GND	Common Ground Rail	—

Wiring Walkthrough:

Connect the LED anode (long leg) through a 220Ω resistor to UNO pin D13, with cathode (short leg) to GND. Connect the positive terminal of the active buzzer to pin D8 and the negative terminal to GND.

Common Ground Rule: Always connect a common GND between the Arduino and every module. Never omit 220Ω series resistors for LEDs.

basic-1.ino • Complete Arduino C++ Code

const int LED_PIN = 13;
const int BUZZER_PIN = 8;

void setup() {
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
}

void loop() {
  digitalWrite(LED_PIN, HIGH);
  digitalWrite(BUZZER_PIN, HIGH);
  delay(1000);
  digitalWrite(LED_PIN, LOW);
  digitalWrite(BUZZER_PIN, LOW);
  delay(1000);
}

Serial Monitor: 9600 baud

Platform: Arduino UNO R3

Pick a Project or Test Any ComponentMaterials + Code + Wiring + Hints & Outcome