"4 wheeled car LINE FOLLOWER" " the tracks are black and white only"

[underprezzure]

ung sandwich.. may nakita akong ganun na link dito e... and ginamit naman e, ldr.... anu ba pinakamaganda sa lahat na gamitin? pwd din bang gamitin ang Ir as proximity sensor>? nag lagay lng ako ng led as indicators... hehe, hnd ba po pwd ung ganun? pag actual na e, nag luluko na hehe... hnd q ma read ung output  voltage e.. wala kasi aqng tester.. badtrip

1. LDR- mas madali matune ang sensor.
2. Phototransistor- maganda ang sensing capability but it's difficult to calibrate.

Definitely IR sensor can be use as proximity sensor and that's no doubt. again, proper calibration lang.

LED indicators - it consume less voltage and not that noisy. Motor causes noise on the circuit, so what i did i separated the power source for the motor from the power source of the sensor. Remember that sensing capability of your sensor is dramatically changed when the power source is getting lower (this happens when the motor starts to run).

Nung gumawa ako ng line follower I didn't use any kind of tester. Purely based from equations. And that was it.



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[mArKhAo]

pansin ko din nga po ung sa power sorce ng Ir at motor pag pinag hiwalay... hehe

[underprezzure]

pansin ko din nga po ung sa power sorce ng Ir at motor pag pinag hiwalay... hehe

Right.  That's how current and voltage draw works on the circuit operation...  And by the way use diodes on your motor bridge(if you use bridge).

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[beginner wan]

^ diodes for inductive kick ng motor. 

galing na naman nung naisip sa photo transistor ah..hehehe.. 

yung ginawa ko, hiwalay din yung supply ng motor at nung sensors.. usually pag forward reverse yung mobot ko, may problema nga sa sensing, konting pihit ng trimmer mo para ma-adjust yung voltage sa comparator... kagaya ni mark, meron din akong LED para sa output ng mga sensor ko para nakikita ko yung response ng sensors..

[eugene]

mga sir ty sa comment.. pede ba kaming gumawa ng carline follower ng walng microcontroller at puro ic lng..
ndi ko po alam kung paanu gagawa ng circuit kasma ung ir.. wala akong idea kc pinprojct to ng wala kming alam sa robotics.. puro theory kya ndi ko xa maumpi umpisahn.. kung san ako dapt mgstart..
ty ulit sa commet..

[beginner wan]

dito ka magsimula eugene..

http://www.electronicslab.ph/forum/index.php?topic=3519.0
 

[maldihtah13]

mga sir ty sa comment.. pede ba kaming gumawa ng carline follower ng walng microcontroller at puro ic lng..
ndi ko po alam kung paanu gagawa ng circuit kasma ung ir.. wala akong idea kc pinprojct to ng wala kming alam sa robotics.. puro theory kya ndi ko xa maumpi umpisahn.. kung san ako dapt mgstart..
ty ulit sa commet..

comparator circuit pwede na un nga lang if you aiming to win a raise medyo di ganun kagaling logic control