OPAMPS IN ROBOTICS

BATCH 8

BLOCK DIAGRAM

SENSORSIR Emitter Receiver combinationComparator

WORKINGCASE1: when no IR is

incident upon the Rx, Rx would be of the order of mega ohms and hence the output voltage would be around 2.6v – 3v depending upon your choice of R2 and the Rx.

CASE2: when IR is incident upon the Rx the resistance of Rx will sharply fall and hence the output voltage would be around 1.8v - 1.5v depending upon your choice of Rx and R2.

SENSOR CIRCUIT

WHITE SURFACE : inverting terminal- 1.8v non inverting – 2.3v

BLACK SURFACE : inverting terminal- 2.6v non inverting – 2.3v

LAYOUT OF SENSORS

LINE FOLLOWER 1.If the left sensor sees light and

the right sensor sees light, your robot is right over the line, so it should go straight.

2. If the left sensor sees light and the right sensor sees dark, your robot is to the left of the line, so it needs to make a right non-point turn.

3. If the left sensor sees dark and the right sensor sees light, your robot is to the right of the line,so it must make a left non-point turn.

4. If the left sensor sees dark and the right sensor sees dark, something is not right because this shouldn’t occur while following a line so tell your robot to stop.

MICROCONTROLLER BOARD

INTERNAL CIRCUITRY

H BRIDGE

SUMMARY

BATCH 8

RATHNA PRAKASH J(09E147) RUBASRI K(09E148) RUSHMITHA T(09E149) SADAGOPAN N S (09E150) SAMBATHKUMAR R(09E151) SARANYA C(09E152) SARAVANAN S(09E153)