Hardware OverviewController, Power Supply, Communication, Driver

Mihai AGAPE, TeacherPalatul Copiilor Drobeta Turnu Severin

KAREL, Comenius Project MeetingBeypazari, 10 – 16.11.2013

This project has been funded with support from the European Commission.

This communication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

The Purpose of the PresentationOverview of some choices for

next hardware components:ControllerCommunicationsMotor DriversPower Supply

The Controller

A circuit that make decisions and command the robot's actions.

Controller plays the role of a brain and enable robot to be autonomous.

Microcontroller Companies ZiLog Microchip Silicon Labs Analog Devices Intel Corporation Atmel Corporation Texas Instruments STMicroelectronics

Dallas Semiconductor Infineon Technologies National Semiconductor Fairchild Semiconductors Freescale Semiconductor STC 8051 Microcontrollers Fujitsu Semiconductor

Europe

Atmel AVR vs.Microchip PIC Packages easy to work (DIP): AVR ≈ PIC Price: AVR ≈ PIC Programming Languages:

Assembly – free assembler AVR ≈ PIC C – free compiler AVR > PIC IDE AVR Studio ≈ MPLAB

Dev. Boards: ATSTK 600 ≈ Explorer 16 Arduino > Basic Stamp

People Support: AvrFreaks ≈ PIClist

Controller with ATmega8

Possible Microcontroller ChoiceATmega32u4

Memories 32K Bytes Flash 2.5K Bytes Internal SRAM 1K Bytes Internal EEPROM

USB 2.0 Full speed Peripheral Features

4x8-bit PWM Channels 4xPWM Channels Programmable (2-16 bits) 6xPWM Channels H. Speed Prog. (2- 11 bits)

Possible Microcontroller ChoiceATmega32u4

Peripheral Features (cont.) 12-channels 10-bit ADC Byte Oriented 2-wire Serial Interface On-chip Temperature Sensor

Special Feature – Internal 8 MHz Calibrated Oscillator

I/O and packages 26 Programmable I/O Lines 44-lead TQFP Package, 10x10mm 44-lead QFN Package, 7x7mm

Communication with PC

USB - Compulsory Bluetooth - Optional

Motor Drivers L 293 & L298

DriversPossible choices SN754410(0.5 A) LB1836 (0.5 A) TB6612FNG (1 A) DRV8801(1 A) DRV8835(1.2 A) DRV8833(1.2 A) MC33926 (2.5 A)

Power Supply

Battery Primary vs. secondary (rechargeable)

Power Switch Mechanical vs. electronic

Battery Charger On board (y/n)

Circuit protection (y/n)

Rechargeable Batteries Ni-MH (Nickel-Metal

Hydride) Cheap

Li-Po (Lithium-Polymer) Expensive Best energy density Environment friendly

Bibliography

http://electronicsnewsline.com/ http://www.ladyada.net/library/picvsavr.htm http://www.atmel.com/ http://www.microchipdirect.com/

Closing and Questions

There are many choices for controller, driver, and power supply

We proposed some choices We have to decide together in order to satisfy

the requirements from Application Form