List of components used:

7805:- 5V voltage regulator IC for providing constant, regulated supply to microcontroller and LCD section. Click on following links to get the datasheets of components for the same.

https://www.fairchildsemi.com/datasheets/lm/LM7805.pdf

ATMEGA16:- AVR 8-bit microcontroller for control section and receiving commands from the user to operate the robotic motors and different valves for vacuum operations.

http://www.atmel.com/images/atmel-8154-8-bit-avr-atmega16a_datasheet.pdf

LCD: - 16X2 alphanumeric liquid crystal display used to display all the relevant information for ease of the user and to display the real time activity going inside the program code with error messages, if any.

https://www.sparkfun.com/datasheets/LCD/ADM1602K-NSW-FBS-3.3v.pdf

Relays: - These are electro-mechanical devices used to control the large voltage operating devices, such as PUMP, solenoids, motors etc. as per the input received from low voltage operating devices such as microcontroller. Here we are using 12V standard relays.

https://www.parallax.com/sites/default/files/downloads/400-00052-Omron-12V-Relay-Datasheet.pdf

ULN2003: - It is a 7 input based driver IC, used to drive relays as per the inputs received from the microcontroller. The input voltages to this IC vary from as low as 2V and goes up to 30V. this stage is necessary for any control section, for controlling the outputs.

http://www.ti.com/lit/ds/symlink/uln2003a.pdf

Vacuum pump: - This device is used to generate vacuum inside the suction cups for the grip of the robot on the wall. This device operates at 12V DC supply.

Battery: - A 12V, 7AH battery is used to provide power for above devices to work properly and in a desired manner. These batteries are SMF (Sealed Maintenance Free) types. These batteries are also called as dry batteries as the electrolyte inside the batteries are stored in soaked materials.

http://www.micropik.com/PDF/CP1270.pdf