View Full Version : which microcont. to use for my first robot...

10-12-2004, 04:03 AM
... which microcontroler and motor driver to use for my first robot.. thanks

10-12-2004, 08:59 PM
If your setting out ... u can try dead simple line follower ( no uC or L293D ) or if you wan to go in for uC try some low end uC with ICP interface and make your own hbridge :) or go in for a L293D IC ( Rs 125 )

10-12-2004, 09:56 PM
If your setting out ... u can try dead simple line follower ( no uC or L293D ) or if you wan to go in for uC try some low end uC with ICP interface and make your own hbridge :) or go in for a L293D IC ( Rs 125 )
...thanks!... i`m novice in robotics... i`m serbia... and here, we cant get stuff for robots that ease... i`ll try with line follower... what i need... for that... and can you tell me more about h-bridge ad how to make it... thanks!!!

10-12-2004, 10:23 PM
It will be easier and better if u could get the driver chips....
U need to work out with transistors and alot of matching in circuitry to ge it to work..The chips work out cheaper
go to Texas instruments site
and see for distributors in your area for L293D....
anyway what's the temperature in Serbia now? :D

10-12-2004, 10:31 PM
The problem is the same here in india anyway

for simple hbridge circuit ... easy to ge components

Line follower projects

for the line follower try www.robotroom.com - sandwich series of analog line follower .

10-12-2004, 11:31 PM
...thanks guys... now in serbia is about 8 c... in last few days i spoke with gerry... with him i get much information... how much is l293d there... what is temperature in india now...

10-12-2004, 11:38 PM
...great, great...... can you tell me more about the crystal... thanks!!! :D :?:

10-13-2004, 08:04 AM
Damn,must be real cold .Here it's around 30C

Did you check out the wiki links Vikas posted.Their neat links for beginners!
About the crystal,it's used to excite your microcontroller.W/o a crystal,it won't work even if u give power to ur micro.The micro needs something to keep it tickling it :D
Hmmm...i think ur nearest dealer is in russia...check the below TI distributor link

10-13-2004, 08:06 AM
..and for Ukraine

10-13-2004, 09:36 PM
... i`m doing well.... That mean... when i programm my microc. he need some power all the time... or he`ll lose information...??? I get NOPPP for 16f84... what can you tell me about *.hex... do i most to put information in shape of *.hex... THANKS!! :D

10-13-2004, 09:45 PM
...ther`s no serbia... full name of my country is serbia and montenegro... or SCG...
// ognjen :(

10-13-2004, 09:55 PM
no ,not when ur programming it,
when ur running it it needs a crystal.
programming a micro is done in 3 steps:
1>u write ur program in C or assembly
2>U then complie it into a .hex file [0 and 1's],so that the mico understands ur program
3>u then burn or load ur microcontroller through ur programmer.
4>now ur microcontroller has the program in it's own memory.u can disconnect it and put /use it in ur application

Yup,Nopp is one of the pic programmers,google for these PIC programmers:
But there are also atmels,Avr microcontrollers


10-14-2004, 01:28 AM
... can i conect, and how motor to par. port without any motor drivers...

10-14-2004, 02:45 AM
... sorry that was a stupid question... i get that... first i must to make 01 to...... it`s ok...

10-16-2004, 03:47 AM
... i`m doin` great i got 16f84, and some other parts... a just need to get l283d... do you knoe how they put some audio(music...) in chip or in what... thanks

10-16-2004, 03:50 AM
...it`s l293d...

10-16-2004, 07:20 AM
Wow,....nice 8)
You can interface chips that can do voice for eg the speakjet. chip,ypu just give it a command and it will say the word.
Also check this link for audio playback

good luck on ur l293d ,till then u can fiddle around with LED's.... :D


10-16-2004, 05:44 PM
... thanks gerry!! i have a problem... i cant find crystal.... can you tell me more about it... what you say... can i start with simle comparator brain line follower.... ad what i need for that... thanks!!!

10-16-2004, 06:32 PM
Till you get your F84 running,yea u an test ur sensors and all using a comparator.
abt the crystal,Aren't there any eletronic dealers there or any online stores over there...?there have to be

10-16-2004, 09:53 PM
...i found places where i can buy stuff for my work... but crystal is ... hard to find... they sey that they`ll get it in november... gerry, where i can find data sheet for f84... thanks!!

10-16-2004, 10:01 PM

The page has alot of resources

10-17-2004, 12:12 AM

10-20-2004, 01:28 AM
... i took ir things from some old videoplayer and his remote... only thing that is wrote on receptor is 94v-0... can you help.... thanks!!!!

10-20-2004, 11:35 PM
only thing that is wrote on receptor is 94v-0.
...sorry didn't get u...
kewl...now ur ripping things apart... :D

10-21-2004, 06:58 PM
... on borad where i took receptor was writen rm601... is that of help :?:

10-21-2004, 11:15 PM
... is there any way to find out gnd, input and output of this ir receptor... thanks!!

10-21-2004, 11:48 PM
Thats a difficult one :) . Usally the + and - pins are grouped together and data pin is a little away from the two pins :) ... It is usally active low . And the - pin is on the outside ..

something like this


10-22-2004, 12:59 AM
if u ripped it off the vcr,then backtrace the connections...how many trerminals has it got...
the only link i got with ur search is...

the sensor's made by samsung....


10-22-2004, 09:19 PM
... i found it!!! thanks guys!! i certainly know that emitter diode works on 3v... what that mean for receptor... sorry if i`m annoying.... thanks!!!!

11-15-2004, 01:28 PM

i started my first robot with 8051 and i suggest the same.
u can get AT89s8252 for ur first robot b'cos it is easily programmable and the programmer can be assembed easily. for driving DC motors u can use L293D.

all the best

11-19-2004, 07:31 PM
... i`m finishing my project... and becouse some reason i dont know... this... how much power i need to charge 3x1.5v batteries... for charger i`ll use adapter (input 220v-50Hz 9W; output 12v dc 500mA)... which resistor to use to low power for charging... THANKS!