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Solderable DIY project kit for Engineering & Diploma students

Product of choice for Engineering & Diploma students worldwide.

Do-It-Yourself Kit

Rs. 2,789

Rs. 2,232

Includes complete hardware with plain PCB and a pre-programmed controller for building the project. Extensive documentation for project execution including step-by-step instructions for Circuit building, Assembly procedure and Troubleshooting. Thorough understanding from the Problem definition to Circuit Design to Programming, Testing, Troubleshooting and finally building a working hardware project.

Tool Kit

(Recommended)

Rs. 350

Includes Digital Multimeter, Soldering Iron, Screw driver, Cutter, to be used with Do-It-Yourself Kit to build the project.

Loaded and Tested PCB

(Optional)

Rs. 1,099

Rs. 880

Pre-soldered and tested PCB. Choose this option only if you are short on time. Only works along with the Do-It-Yourself Kit. (Can be purchased later)

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PROJECT DESCRIPTION

This project is designed to control home appliances based on a fixed-time delay for each load by using a 555 timer to generate switching period intervals  to drive a relay to switch ON or OFF for any load.

A time-delay based relay is a relay that stays on for a certain period of time once activated. This circuit is made up of a simple adjustable timer circuit that controls the actual relay.

The time is adjustable from 0 to few seconds, but can be increased by increasing the time constant of the mono-stable 555-timer. The current handling capacity of the load is limited by the kind of relay used. The project is offered with a lamp as a load.  

PROJECT HIGHLIGHTS
Easy to use, Self-explanatory kit.
All-inclusive solution kit.
Extensive audio-visuals available.
Branding-free material.
Call/mail for Tech Support from 10 am - 7 pm.
Can be Customized for Arduino, Raspberry Pi, PIC
Non-Microcontroller Project.
BLOCK DIAGRAM
Home Appliances Control with Time Delay Switch
Hardware Requirements
  • Resistors
  • Potentiometer
  • Capacitors
  • Diodes
  • Relay
  • Timer IC
  • Lamp
Software Requirements
    None
Q & A
Q:  In which mode 555-timer works?
A:  555 timer works in monostable mode
Q:  What is the principle?
A:  The principle behind the project is using 555-timer with RC time constant
Q:  What is time delay based relay operated load?
A:  It is controlling the switching of load, as per the time decided by the RC time constant of the 555 timer.
Q:  What is the formula for calculating smoothing capacitor value?
A:  There is some approximated formula .Peak to peak ripple voltage = Load current in amps / (2*line frequency in hertz *capacitance in farads). But as rule of thumb for 1 A current 1000uF is best. Thus it is load dependent.
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Tool kit cannot be purchased individually.

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Plot No. 105, 3rd Floor,
Liberty Plaza, Himayathnagar,
Hyderabad - 500029,
Telangana, India
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