Arduino Web Server using Drop-down Select Boxes for Hour and Minute

Two HTML drop-down select boxes are used to select hour and minute values on a web page that are sent to an Arduino web server. The time values can be used to set a real-time clock or for any other time related settings.

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Created by Jayant 10 years 37 weeks ago – Made popular 10 years 37 weeks ago
Category: Arduino Tags:

1 Minute Timer Circuit 10 years 39 weeks ago

As the name suggest 555 timer is basically a “Timer”, which create a oscillating pulse. Means for some time output pin 3 is HIGH and for some time it remains LOW, that will create a oscillating output.

DS3231 RTC Module 6 years 3 weeks ago

The DS3231 is a Precise Real Time Clock Module based on the AT24C32 IC. The module can provide information like date, day, week and time to a microcontroller through I2C communication. The DS3231 is a Precise Real Time Clock Module based on the AT24C32 IC. The module can provide information like date, day, week and time to a microcontroller through I2C communication.

Arduino 7 Segment Display Clock 6 years 51 weeks ago

In this DIY project we make a Digital clock by multiplexing four- 7 segment displays using Arduino UNO and displaying the time in HH:MM format. This tutorial covers all the DIY instructions, circuit diagram and required code.

Real-Time Hand Gesture Control Robot Using OpenCV and Arduino 1 week 1 day ago

Build a real-time hand gesture control robot using OpenCV, MediaPipe, Arduino Nano & nRF24L01. Complete project source code, circuit diagrams, and step-by-step guide.

Zener Diode 1N4728A 8 years 28 weeks ago

A Zener diode is another form of diode, but is used for entirely different purpose. They are mainly used in protection circuits or as crude voltage regulators. Let us see how we can select one for your application.

Temperature and Humidity Monitoring using ThingSpeak & ESP8266 6 years 45 weeks ago

In this project, we are going to send Temperature and Humidity sensor data to Thingspeak using DHT11. By this method we can monitor our DHT11 sensor’s temperature and humidity data over internet using ThingSpeak IOT server, and we can view the logged data and graph over time on the ThingSpeak dashboard.

Astable Mode of 555 Timer IC 10 years 39 weeks ago

If an oscillator of a particular frequency and mark to space ratio is required, the method would be to calculate periodic time from the required frequency and the discharge time and charge time using the formulae for tD and tC described in Oscillators Module 4.3. To do this, some component details will be needed.

Voltage Controlled Pulse Width Oscillator 10 years 42 weeks ago

The basic circuit operates at a frequency determined by R1, R2 and C1 and has a pulse width range of 0 to 100 percent.

The following diagram shows a basic circuit with an open collector output that would require a pull up resistor at its output. The parts values are the nominal values of the components used.

Arduino GPS Clock 10 years 5 weeks ago

There are many GPS satellites around the Earth which are used to provide the exact location of any place. Along with the location coordinates (Latitude and Longitude), it also provide other data like time, date, altitude, direction tracking angle etc.

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