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infinity
12-14-2004, 04:46 PM
Hi!
I am doing a project on robotic obstacle detection and path planning. The sensor I am using is Sharp GP2D12. Now, I need a microcontroller with an 8-bit ADC, stepper motor driver circuit, atleast 2 I/O ports and 1-2K programmable memory. Can u suggest a microcontroller which is readily available in India and is not too costly!

vikas
12-14-2004, 06:22 PM
All the uC support this functionality avr , pic , 8051 . So go around and ask which is availible to you localy .

infinity
12-15-2004, 02:58 PM
8051 doesn't have an in-built ADC. I want minimum interfacing.

ashish_bhat
12-15-2004, 04:17 PM
hey u r using those extra costly GP2D sensors and worrying abt the cost of uC ! :)

anyways u can try mega8585 as ur uC. 40-pin chip with 8K Flash, 512bytes RAM, 8-channel 10bit ADC, u can use one port with ULN2803 to drive 2 steppers (upto 350mA each coil) and still have 2 ports free! It even has an internal oscillator so u need not even use a crystal (this oscillator is by defaut enabled on this chip).
costs arnd Rs. 250 (Visha - Lamington)

Ashish

vikas
12-15-2004, 04:32 PM
Well the mega series is highly recommended :) . Also there are over 100 + varietes of x51 chips with diffrent features and functions .

infinity
12-20-2004, 12:21 PM
Well! thx 2 u all. But now our project guide is suggesting using DSP Processor TMS 3200. So, now we will try using that. Hope it works! Thx neways! :P