Main public logs

Combined display of all available logs of cognifront. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

03:58, 4 September 2026 CogWikiEditor talk contribs uploaded File:Ir-receiver-esp32.jpg
03:56, 4 September 2026 CogWikiEditor talk contribs created page IR Receiver (Created page with "===Interfacing IR Receiver with ESP32=== '''Interfacing IR Receiver with ESP32''' demonstrates how an infrared (IR) receiver can be connected to an ESP32 board to receive and decode signals transmitted by an IR remote control. The ESP32 receives the infrared signal through a digital GPIO pin. The received IR data is decoded using the '''IRremote''' library and the decoded information is displayed on the Serial Monitor. <center> '''IR Remote → IR Receiver → ESP32...")
03:51, 4 September 2026 CogWikiEditor talk contribs created page File:Accelerometer-esp32.jpg
03:51, 4 September 2026 CogWikiEditor talk contribs uploaded File:Accelerometer-esp32.jpg
03:39, 4 September 2026 CogWikiEditor talk contribs created page Accelerometer (Created page with "===Interfacing MPU-6500 Accelerometer and Gyroscope with ESP32=== '''Interfacing MPU-6500 Accelerometer and Gyroscope with ESP32''' demonstrates how an MPU-6500 motion sensor can be interfaced with an ESP32 board using the '''I²C communication protocol'''. The MPU-6500 contains a '''3-axis accelerometer''' and a '''3-axis gyroscope'''. It can be used to measure acceleration, angular velocity and sensor temperature. The ESP32 communicates with the MPU-6500 through the...")
03:15, 4 September 2026 CogWikiEditor talk contribs created page File:Pull-up-pull-down-resistor.jpg
03:15, 4 September 2026 CogWikiEditor talk contribs uploaded File:Pull-up-pull-down-resistor.jpg
17:31, 3 September 2026 CogWikiEditor talk contribs created page Push Button (Created page with "===Interfacing Push Buttons with Arduino UNO=== '''Interfacing Push Buttons with Arduino UNO''' demonstrates how push buttons can be interfaced with an Arduino UNO board to control an LED and a buzzer. The practical also demonstrates the concept of '''pull-up''' and '''pull-down''' resistor configurations used while interfacing push buttons with a microcontroller. == Objectives == * To study the concept of push buttons. * To study the pull-up resistor and pull-down r...")
17:23, 3 September 2026 CogWikiEditor talk contribs created page Light Dependent Resistor (LDR) (Created page with "===Interfacing Light Sensor (LDR) with Arduino UNO=== '''Interfacing Light Sensor (LDR) with Arduino UNO''' demonstrates how an LDR sensor can be interfaced with an Arduino UNO to measure light intensity and control an LED according to the sensor value. == Objectives == * To study the working of the LDR sensor. * To interface the LDR sensor with the Arduino UNO board. * To write a program to control the LED using the LDR sensor. == Software == * Arduino IDE 1.6.9 or...")
17:08, 3 September 2026 CogWikiEditor talk contribs created page File:Buzzer-tone-melody-playing.zip
17:08, 3 September 2026 CogWikiEditor talk contribs uploaded File:Buzzer-tone-melody-playing.zip
17:01, 3 September 2026 CogWikiEditor talk contribs created page Buzzer (Created page with "===Interfacing Piezo Buzzer with ESP32 for Generating Sound and Music=== {| class="wikitable" style="float:right; margin-left:20px; width:300px;" ! colspan="2" style="font-size:120%;" | Piezo Buzzer Interface |- ! Controller | ESP32 |- ! Component | Piezoelectric Buzzer |- ! Number of Pins | 2 |- ! Data Pin | + Pin |- ! Ground Pin | − Pin |- ! Control | Digital Output |- ! Function | Sound and Music Generation |} '''Interfacing Piezo Buzzer with ESP32 for Generating...")
16:53, 3 September 2026 CogWikiEditor talk contribs created page LED Blinking (Created page with "===Interfacing LED Bar with ESP32=== {| class="wikitable" style="float:right; margin-left:20px; width:300px;" ! colspan="2" style="font-size:120%;" | LED Bar Interface |- ! Controller | ESP32 |- ! Component | LED Bar |- ! Number of LEDs | 8 |- ! Data Pins | 4 |- ! LED Configuration | Common Anode / Common Cathode |- ! LED Voltage | Approximately 1.7 V |- ! LED Current | 5–20 mA |- ! Output | LED ON/OFF |} '''Interfacing LED Bar with ESP32''' demonstrates how an LED b...")
16:21, 3 September 2026 CogWikiEditor talk contribs created page File:Rotory-encoder-module-arduino.jpg
16:21, 3 September 2026 CogWikiEditor talk contribs uploaded File:Rotory-encoder-module-arduino.jpg
16:17, 3 September 2026 CogWikiEditor talk contribs created page Rotary Encoder Module (Created page with "===Arduino Rotary Encoder Position and Angle Measurement Using M274 / KY-040=== {| class="wikitable" style="float:right; margin-left:20px; width:300px;" ! colspan="2" style="font-size:120%;" | Rotary Encoder Measurement |- ! Controller | Arduino UNO |- ! Encoder | M274 / KY-040 |- ! Encoder Pins | CLK, DT, SW |- ! CLK Pin | D2 |- ! DT Pin | D3 |- ! SW Pin | D4 |- ! Resolution | 20 pulses/revolution |- ! Output | Position, Angle, Direction |} '''Arduino Rotary Encoder P...")
15:59, 3 September 2026 CogWikiEditor talk contribs created page File:Dc-motor-pot-arduino.jpg
15:59, 3 September 2026 CogWikiEditor talk contribs uploaded File:Dc-motor-pot-arduino.jpg
15:53, 3 September 2026 CogWikiEditor talk contribs created page Potentiometer for DC Motor Speed Control (Created page with "===Arduino DC Motor Speed Control Using Potentiometer=== {| class="wikitable" style="float:right; margin-left:20px; width:300px;" ! colspan="2" style="font-size:120%;" | DC Motor Speed Control |- ! Controller | Arduino | | ------------------- | | ! Motor Driver | | Motor Driver | | - | | ! Input | | Potentiometer | | - | | ! Potentiometer Pin | | A0 | | - |...")
12:40, 3 September 2026 CogWikiEditor talk contribs created page File:Encoder-dc-motor-arduino.jpg
12:40, 3 September 2026 CogWikiEditor talk contribs uploaded File:Encoder-dc-motor-arduino.jpg
12:33, 3 September 2026 CogWikiEditor talk contribs created page File:Dc-motor-encoder-arduino-uno.jpeg
12:33, 3 September 2026 CogWikiEditor talk contribs uploaded File:Dc-motor-encoder-arduino-uno.jpeg
11:58, 3 September 2026 CogWikiEditor talk contribs created page DC Motor with Encoder (Created page with "# Arduino L293D Motor Speed Measurement Using LM393 Encoder ## Overview This practical measures the **RPM (revolutions per minute)** of a geared DC motor using an **LM393 optical encoder module** and an **Arduino**. The encoder disc is mounted on the **gearbox output shaft** and contains **20 slots**. > **20 encoder pulses = 1 complete output-shaft revolution** The motor is driven using an **L293D motor driver**, while the encoder pulse signal is connected to Arduin...")
00:04, 1 September 2026 User account JefferyTerrill8 talk contribs was created
02:31, 30 August 2026 CogWikiEditor talk contribs created page IPDL - 15: IoT-Based Small Project (Created page with "== IPDL - 9A: Distance Measurement Using Arduino Uno and Ultrasonic Sensor == === Objective === To interface an '''ultrasonic sensor''' with an '''Arduino Uno''' and measure the distance of an object from the sensor. === Required Components === * Arduino Uno * HC-SR04 ultrasonic sensor * USB cable * Jumper wires === Circuit Diagram === <!-- IMAGE PLACEHOLDER: Suggested image: Circuit diagram showing Arduino Uno connected to an HC-SR04 ultrasonic sensor. Show: * HC-...")
14:28, 29 August 2026 User account KellyShetler talk contribs was created
12:24, 29 August 2026 CogWikiEditor talk contribs created page IPDL - 11: Web-Based Display of Humidity and Temperature Data (Created page with "== IDPL - 11: Displaying Humidity and Temperature Data on a Web-Based Application == === Objective === To interface a '''DHT11 temperature and humidity sensor''' with an '''ESP32''' and display the measured temperature and humidity values on a web page hosted by the ESP32. === Required Components === * ESP32 development board * DHT11 temperature and humidity sensor * USB cable === Circuit Diagram === <!-- IMAGE PLACEHOLDER: Suggested image: Circuit diagram showing D...")
12:15, 29 August 2026 CogWikiEditor talk contribs created page IPDL - 10: HTTP Server Using ESP32 for Actuator Control (Created page with "IPDL - 10: Introduction to HTTP and ESP32 Web Server for LED and Servo Motor Control === Objective === To understand the basics of '''HTTP''' and create a simple web server on the '''ESP32''' to control an '''LED''' and a '''servo motor''' through a web page, with the servo motor angle controlled using an interactive '''seek bar''' ranging from '''0° to 180°'''. === Required Components === * ESP32 development board * LED * Servo motor * External 5 V power supply fo...")
12:14, 29 August 2026 CogWikiEditor talk contribs created page IPDL - 9: Web-Based Home Automation Using Arduino Uno and Bluetooth (Created page with "== IPDL - 9: Bluetooth-Based Home Automation Using Arduino Uno and HC-05 == === Objective === To control a relay-based electrical appliance using an '''Arduino Uno''' and an '''HC-05 Bluetooth module''' through a Bluetooth-enabled smartphone. === Required Components === * Arduino Uno * HC-05 Bluetooth module * Single-channel relay module * AC bulb with suitable bulb holder * 3-pin socket provided with the relay module * Suitable insulated electrical wire * Smartphone...")
12:14, 29 August 2026 CogWikiEditor talk contribs created page IPDL - 8: Cloud Ready Temperature Sensor Using Raspberry Pi and ThingSpeak (Created page with "== IPDL - 8: Cloud Ready Temperature Sensor (DHT11) Using Raspberry Pi and ThingSpeak == === Objective === To interface a '''DHT11 temperature and humidity sensor''' with Raspberry Pi 4 and send the measured data to the '''ThingSpeak''' cloud platform for remote monitoring. === Required Components === * Raspberry Pi 4 * DHT11 temperature and humidity sensor * 10 kΩ pull-up resistor (required when using a bare DHT11 sensor) * Breadboard * Jumper wires * Internet conne...")
12:13, 29 August 2026 CogWikiEditor talk contribs created page IPDL - 7: LED Control Using ESP8266 and Blynk App (Created page with "== IPDL - 7: LED Control Using ESP8266 and Blynk App == === Objective === To control an LED connected to an '''ESP8266 NodeMCU''' using the '''Blynk IoT app''' through a Wi-Fi network. === Required Components === * Cognifront NodeMCU ESP8266 kit * Jumper wires * USB cable === Required Libraries === * ESP8266Wifi * Blynk (installation steps below) === Circuit Diagram === <!-- IMAGE PLACEHOLDER: Suggested image: Circuit diagram showing NodeMCU ESP8266 D1 (GPIO5) conn...")
12:05, 29 August 2026 CogWikiEditor talk contribs created page IPDL - 6: DC Motor and Stepper Motor Control with Raspberry Pi (Created page with "=== Objective === To interface and control a '''DC motor''' and a '''stepper motor''' using Raspberry Pi 4 and demonstrate their basic motion and speed control. == Part A: DC Motor Control with Raspberry Pi == === Required Components === * Raspberry Pi 4 * DC motor * L298N motor driver module * External motor power supply * Jumper wires === Circuit Diagram === <!-- IMAGE PLACEHOLDER: Suggested image: Circuit diagram showing Raspberry Pi 4 connected to an L298N moto...")
12:04, 29 August 2026 CogWikiEditor talk contribs created page IPDL - 5: Integration of Actuators with NodeMCU (Created page with "== IPDL - 5: Integration of Actuators with NodeMCU (Servo Motor) == === Objective === To interface and control a '''servo motor''' and a '''Buzzer''' independently using NodeMCU ESP8266. === Required Components === * NodeMCU ESP8266 * Servo motor * LED Bar * External 5 V power supply == Part A: Servo Motor Interfacing == === Objective === To interface a servo motor with NodeMCU ESP8266 and control its angular position using a programmed control signal. === Circuit...")
12:04, 29 August 2026 CogWikiEditor talk contribs created page IPDL - 4: IoT Sensor Interface with Arduino (Created page with "== IPDL - 4: IoT Sensors Interface with Arduino (Temperature/Light Sensors) == === Objective === To interface an '''LDR''' and '''DHT11 temperature sensor''' with Arduino Uno and read light intensity and temperature values through the Serial Monitor. === Required Components === * Arduino Uno * LDR (Light Dependent Resistor) sensor/module * DHT11 temperature sensor * Breadboard * Jumper wires * 10 kΩ resistor (if using a bare LDR) * USB cable === Circuit Diagram ===...")
12:03, 29 August 2026 CogWikiEditor talk contribs created page IPDL - 3: LED Blinking with Arduino Uno (Created page with "== IPDL - 3: LED Blinking with Arduino Uno == === Objective === To interface an LED with Arduino Uno and write a program to blink the LED at a fixed time interval. === Required Components === * Arduino Uno * LED * 220 Ω resistor * Breadboard * Jumper wires * USB cable === Circuit Diagram === <!-- IMAGE PLACEHOLDER: Suggested image: Circuit diagram showing Arduino Uno digital pin 8 connected to a 220 Ω resistor, then to the LED anode. LED cathode connected to GND....")
12:03, 29 August 2026 CogWikiEditor talk contribs created page IPDL - 2: Study and Survey of Various IoT Platforms (Created page with "== IPDL - 2: Study and Survey of Various IoT Platforms == === Objective === To study and compare different IoT cloud platforms used for connecting, monitoring, controlling, and managing IoT devices. The following platforms are studied: * Blynk * ThingSpeak * Cognifront IoT Cloud === Introduction === An '''IoT platform''' provides software and cloud services that allow IoT devices to communicate with users and applications over a network. An IoT platform can provide...")
11:54, 29 August 2026 CogWikiEditor talk contribs created page IPDL - 1: Study and Survey of Various Development Boards for IoT (Created page with "=== Group A — Compulsory Experiments === {| class="wikitable" style="width:100%;" ! ID ! Experiment ! Platform / Technology |- | '''IDPL - 1''' | IDPL - 1: Study and Survey of Various Development Boards for IoT | Arduino, NodeMCU, ESP8266, ESP32, Raspberry Pi |- | '''IDPL - 2''' | IDPL - 2: Study and Survey of Various IoT Platforms | IoT Platforms / Cloud Platforms |- | '''IDPL - 3''' | IDPL - 3: LED Blinking with Arduino Uno | Arduino Uno, LED |- | '''IDP...")
09:06, 29 August 2026 User account EDFWinston talk contribs was created
03:32, 27 August 2026 CogWikiEditor talk contribs created page IDPL - 15: IoT-Based Small Project (Created page with "== IDPL - 9A: Distance Measurement Using Arduino Uno and Ultrasonic Sensor == === Objective === To interface an '''ultrasonic sensor''' with an '''Arduino Uno''' and measure the distance of an object from the sensor. === Required Components === * Arduino Uno * HC-SR04 ultrasonic sensor * USB cable * Jumper wires === Circuit Diagram === <!-- IMAGE PLACEHOLDER: Suggested image: Circuit diagram showing Arduino Uno connected to an HC-SR04 ultrasonic sensor. Show: * HC-...")
02:27, 27 August 2026 User account Mavis23V307 talk contribs was created
06:46, 26 August 2026 User account JonathanGunn91 talk contribs was created
12:27, 25 August 2026 CogWikiEditor talk contribs created page File:Ipdl-8-thingspeak-dht11-rpi-dashboard.jpeg
12:27, 25 August 2026 CogWikiEditor talk contribs uploaded File:Ipdl-8-thingspeak-dht11-rpi-dashboard.jpeg
01:48, 23 August 2026 User account VidaClaude2528 talk contribs was created
09:19, 22 August 2026 User account ErnaSkirving4 talk contribs was created
15:00, 21 August 2026 User account FidelCard798595 talk contribs was created
09:13, 21 August 2026 User account Edna00499770748 talk contribs was created
08:21, 21 August 2026 User account RichRolleston talk contribs was created
08:50, 20 August 2026 User account Susanne1830 talk contribs was created