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PROJECT DESCRIPTION

Touch Point based Calling Bell

This circuit is designed to develop a touch sensitive switch to develop a beep sound. A 555 timer is used in monostable mode to drive a buzzer which in future can be used to operate a relay to switch ON a load for fixed time duration.

The 555 timer wired in mono-stable mode is triggered by a touch plate connected to its trigger pin. The output of 555 delivers logic high for a fixed time interval as decided by the RC time constant connected to the timer.

This output drives an NPN transistor which in turn switches ON a buzzer for that duration after which is switches OFF automatically. Human body induced mains supply is used to develop a voltage on the touch plate to trigger the timer.

Note: This DIY kit doesn't include soldering iron, multimeter, cutter and screwdriver as it is not required.

One solderless multipurpose breadboard and set of basic components will be provided for each of the 5-in-1 Solderless project kit. This 5-in-1 Solderless Project kit will be provided with additional 4 free circuits which can be built by additionally procuring very few components. Thus, students can explore and develop total 5 projects at the cost of 1 project kit only.

All the engineering, diploma and other technical students from first year to final year can get hands on experience in designing and developing various electronics projects with these 5-in-1 solder less project kits. Completely assembled project is available in image format besides real time working in audio visuals to help students to complete one DIY kit with ease and then try engineering skills to attempt the other free circuits provided as no additional components are required. With this solderless breadboard approach none of the component is soldered, hence all the components can be used again and again to try such multiple circuits.

Note1: All the 5 project circuits are tested and working.

PROJECT HIGHLIGHTS
Easy to use, Self-explanatory kit.
All-inclusive solution kit.
Extensive audio-visuals available.
Non-Microcontroller Project.
Call/mail for Tech Support from 10 am - 7 pm IST.
5-in-1 Solderless Breadboard Project.
BLOCK DIAGRAM
Hardware Requirements
  • Resistors, Capacitor
  • Battery, Breadboard
  • LDR, Thermistor
  • Transistor, MOSFET
  • LED, Diodes
  • Comparator IC, 555 TImer
  • Speaker, Buzzer
  • Switch, Preset
  • DC Fan
Software Requirements
    None
OTHER INFORMATION
Battery not included in the kit due to Courier service prohibition. Please buy Lithium 9 volt battery for this project.
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