![References
[1] http://www.pearltrees.com/u/12469890-relays-arduino-turning-lights
[2] http://www.theorycircuit.com/arduino-variable-timer-relay/
[3]https://circuitdigest.com/microcontroller-projects/arduino-
relaycontrol
[4]https://www.scoop.it/t/pmclab/p/4056121599/2015/12/01/arduino-
multitask-control-relay-timer-with-keypad](https://image.slidesharecdn.com/mppproject-180629220638/85/DIgital-Timer-And-Counter-To-Control-Relays-13-320.jpg)
DIgital Timer And Counter To Control Relays
- 1. Digital Timer And Counter To Control Relays Presenter: MUHAMMAD FAZIL MEMON Presented to: Engr. Faizan Ur Rehmam Department of Electrical Engineering, Indus University, Karachi
- 2. Contents • Abstract • Introduction • Methodology • Block Diagram • List of the components used • Total Cost • Results • Conclusion • References
- 3. Abstract • One of the most useful things you can do with an Arduino is use it to control higher voltage electronic devices. e’ll be using a 5V relay to switch the current to a power outlet on and off. We’ll use the Arduino and a sensor to control when the relay switches. To learn more about the 5V relay and it’s different modes of operation, see our article “How to Set Up a 5V Relay on the Arduino”.
- 4. Introduction • In this project you will be able to control the on and off of your devices between the time you want. They may be the lights at the night, water the garden, turn on a machine, etc. We will use the arduino, the LCD and the RTC DS 3231 to show and control the time. • We could always wire the relay directly to the device we want to control, but it’s more practical to go one step closer to the source and switch the power at the outlet. That way you can use it for multiple devices without having to re-wire the relay or cut into the device’s power supply.
- 5. METHODOLOGY • In this project arduino uno board is used to control 4 channel relay module. • Use 20 x 4 character LCD which indicates the time duration status and for this pupose we use RTC (Real Time Clock )Module/. • Digital pins D2 to D7 are connected to the LCD display. VR1 varible resistor helps to control the contrast of LCD display, Transistor Q1 BC547 reacts as a Switching device and controls the power supply to the Relay coil depends on arduino output. • There are five push buttons are placed to set different time durations, S1 Switch makes the count start, S2 changes the Hours and S3 changes the Minutes of time duration.S4 changes the seconds and S5 is used for reset the all timers of the relays0 Output signal from the Arduino is taken from D8 pin and it drives the Relay through transistor. • After making the connection, upload the following arduino sketch and pretest the operation with real timer clock.
- 6. Block Diagram Arduino LCD 20 X 4 4 – CHANNEL RELAY RTC MODULE LOADS`
- 8. List Of Components Used • Arduino Uno • RTC Module • 4 Channel Relay Module • Bread Boards • Push Buttons • Connecting Wires • Different Loads For Switching
- 9. Total Cost Components Price Arduino 550 4 Channel Relay Module 300 RTC Module 200 BreadBoards 250 Push Buttons 50 Connecting Wires 300 Hard Board Sheet 200 Supply Wires 275 Different Loads 400 Screw Nuts 30 Other 500 Total Approx.3055 Rs
- 10. Results • After designing, simulating, assembling, and testing the circuit, we came to the conclusion that our circuit of the digital timer and counter is working satisfactorily. • The construction of hardware is perfect. • The total project work perfectly and has negligible amount of unexpected functioning.
- 11. Results
- 12. Conclusion • As the technology is going on developing day by day, we prefer things to be done automatically and in the same way our projects reduces the work to mankind.