Difference between revisions of "Line follower"
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Consists of elements from analog sensing, digital logic, and driver circuits. | Consists of elements from analog sensing, digital logic, and driver circuits. | ||
== | == Outline == | ||
The project had the following outline: | |||
* An autonomous unit following a dark line on a bright background | |||
* Logic, 1 (5V) when detector is over line, otherwise logic 0 (0V), CMOS technology | |||
* Turn off when no line under detectors | |||
* Steering right/left accomplished in 3 phases; straight ahead, 5 degree, and 10 degree | |||
* Powered by a battery power source | |||
== BOM == | |||
* 1 L293D motor driver | * 1 L293D motor driver | ||
* 5 QRD1114 IR LED and Phototransistor sensor | * 5 QRD1114 IR LED and Phototransistor sensor | ||
Revision as of 19:38, 14 May 2010
A line follower built for as part of an electronics course. Design and construction is done from scratch.
Consists of elements from analog sensing, digital logic, and driver circuits.
Outline
The project had the following outline:
- An autonomous unit following a dark line on a bright background
- Logic, 1 (5V) when detector is over line, otherwise logic 0 (0V), CMOS technology
- Turn off when no line under detectors
- Steering right/left accomplished in 3 phases; straight ahead, 5 degree, and 10 degree
- Powered by a battery power source
BOM
- 1 L293D motor driver
- 5 QRD1114 IR LED and Phototransistor sensor
- Or, 5 LED red
- 5 SD5443 phototransistor
- Or, 5 LED red
- 1 BC546B BJT transistor
- 2 GM8 motor and wheel kits
- GMPW Deal
- 2 GMB28 GM8 gear motor bracket
- 1 RE210-S1 Protot.card 100x160
- 1 9v battery connector
- 1 LM2937 5v voltage regulator
- Or, 7805 5v voltage regulator
- 3 4071 Quad OR-gates
- Or, 2 4072 Dual 4-input OR-gates
- 1 4069 Hex NOT-inverters
- 1 1N4148 diode small signal
- 1 SWT1 SPDT Switch
- x 10k Resistors
- Or, RT20k 20k Multi-turn trimpot
