hardware overview - controller, power supply, communication, driver
TRANSCRIPT
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