VHDL Based Robot PART-I

AUTONOMOUS ROBOT FOLLOWING PREDEFINED
PATH USING VHDL CODING PART-I

Hello friends, we know a lot about the robot designing and programming robots using different families of microcontrollers, in this tutorial we will explore a new way of robot programming which is by VHDL coding, So let's begin….

DESCRIPTION

This article shows the application of VHDL coding in the robotic world. This autonomous robot will follow a predefined path. In our project this path is a square that is of 8 steps (each side). For this purpose we are using two power supply, one of them is used to give 5V regulated supply and other one is giving 12V unregulated dc supply. We are using CPLD kit in which VHDL coding is burned. Quartus II software is used for burning the VHDL coding in the CPLD kit. The 5V regulated dc supply is given to the CPLD kit. And 12v unregulated dc supply is used to drive the motors of the robot. The digital output from the CPLD kit is given to the Hex Inverter (Buffer) and then to the L293D driver.

BLOCK DIAGRAM

 

Software:- Quartus II software version 8.0 is used. This software provides the platform for writing the VHDL code.

Compilation and simulation:- After writing the VHDL code, the software provides the facility to compile and simulate the program so that an errorless program is burnt into the kit with required files.

CPLD kit:- This kit provides the facility to put the VHDL code in execution and provides required input and output.

Hex inverter:- CD4069 IC is used as hex inverter which works as a buffer as well as an inverter.

Motor driver:- L293D IC is used as motor driver. This accepts DTL and TTL logic levels and drives the load.

RESOURCES REQUIRED

S.NO.	COMPONENT	SPECIFICATION	QUANTITY
1.	Connectors	7     pin 2 pin	1 4
2.	Transformer	220V AC 12V/ 500 mA Center tap.	1
3.	Diodes	1N4007	10
4.	Voltage regulator	MC7805	1
5.	Capacitors	1000Uf / 25v 10 uF/ 16v	2 1
6.	Hex inverter	CD4069	1
7.	Driver IC	L293D	1
8.	LED	Ultra red	4
9.	Resistors	1Kohm	4
10.	Connecting wires	-	As required
11.	PCB	epoxy	1
12.	CPLD	EPM3064ALC44-10	1
13.	Soldering iron	-	1
16.	Downloading cable	Byte blaster	1

Part-II will be focusing on the Circuit Design; Continue Reading... Cheers.