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Re: please i need help?
You should know first how your car central locking interact with outer world :)
I mean what its interface with the microcontroller ? SPI, CAN, I2C, or what?
Then you have to know what the format of data packets should be sent to control?
Regards
Amr
Hi I heard about these places but I don't know if they are good or not ??
Jelecom
Apex
PiTechnologies
There are also courses in Faculty of Engineerig in Cairo University.
Elmuhamady
Each copier has 2 or 3 motors, so you will need 3 machines only :D:D:D
Try Digikey to find suitable one :
http://search.digikey.com/scripts/DkSearch/dksus.dll?Cat=983126&k=stepper%20motor
Best Wishes,
Amr
Dear I think you can get a very suitable stepper motor for your project from an old copier machine (we have done that before) then you can improve holding torque using Stepper Chopping Driving.
For more details see:
**broken link removed**
Best Wishes,
Amr
Dear I think you should use Stepper Motor as it will be very optimized for your purpose and you can also know how many steps to reach your desired position. I think you wouldn't find more accuracy than that. Also stepper motor work great with microcontrollers.Other wise your circuit will be more...
I think you can use PIC18F8722 Family. It has the following :
Program Memory Type Flash
Program Memory (KB) 128
CPU Speed (MIPS) 10
RAM Bytes 3,936
Data EEPROM (bytes) 1024
Digital Communication Peripherals 2-A/E/USART, 2-MSSP(SPI/I2C)
Capture/Compare/PWM Peripherals 2 CCP, 3 ECCP...
There are many example programs on USB and HID interface in CCS you can include and modify their functions to suit your program. Also you don't need driver for HID as PC has it in its operating system.
You can download a PC software tool for testing your connection from Microchip website. This...
Dear I don't work with Atmel microcontroller as my work is with PIC microcontroller and you can use PIC24 or PIC32 which have embedded USB host (USB on-the-go which connect two devices as microcontroller and your mobile without need to pc HOST as i mentioned before).
see:
**broken link...
Please read this page about "USB On-The-Go" to communicate devices with USB peripherals and directly with each other when a PC is not available:
https://www.usb.org/developers/onthego/
It has also a lot of documents and downloads related.
Dear there is a complete project on it in this book :
"Advanced PIC Microcontroller Projects in C From USB to RTOS with the PIC18F Series" by Dogan Ibrahim
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