[Saatwik]

you can get help from this project with some changes https://www.engineersgarage.com/microcontroller/8051projects/interface-rfid-AT89C51-circuit

 

[Saatwik]

You can get help from this project https://www.engineersgarage.com/contribution/arduino-based-automatic-school-bell-system

[Saatwik]

this may help you

https://www.engineersgarage.com/mugarage/how-make-your-own-thermal-imaging-camera-cost-effective-manner

[Saatwik]

you can use 3 Pin with different PWM signel to generate 3 phase .

[Saatwik]

Robotic arm is control of servo so you can find here how to control servo with 89c51 https://www.engineersgarage.com/microcontroller/8051projects/servo-motor-project-circuit

and for structure you can made yourself via wood or buy online .

 

[Saatwik]

you can get help from this project https://www.engineersgarage.com/mygarage/arduino-powered-diy-calculator

[Saatwik]

you can get help from this project      https://www.engineersgarage.com/contribution/controlling-wireless-robot-matlab-gui

[Saatwik]

you can use shock gum or shock pen circuit that will be safe and it will give a littile shock

[Saatwik]

these both link may help you https://www.engineersgarage.com/tutorials/twi-i2c-interface

https://www.engineersgarage.com/embedded/avr-microcontroller-projects/atmega32-twi-two-wire-interface

[Saatwik]

Use break; to leave the loop

[Saatwik]

you can use 7812 for 12 volt power supply upto 35v input.

[Saatwik]

This may help you https://www.engineersgarage.com/embedded/pic-microcontroller-projects/interface-gsm-module-call-message-circuit

[Saatwik]

you can get help from this project   https://www.engineersgarage.com/contribution/interfacing-raspberry-pi-with-arduino

[Saatwik]

did you faced this problem before or it's your first time.

 

[Saatwik]

Higher current generate the larger amount of heat. if you control the current it may control the heat on hotplate. So if you use current regulater of a variable resistence that may help to reduce the heat. 

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