IR Proximity Sensor with SMD UNO Compatible with Arduino
๐ What this module actually is
This is a combo package that includes:
๐ง Arduino UNO SMD board (ATmega328P)
๐ก IR Proximity Sensor module
๐ So instead of buying separately, you get both together.
โ๏ธ Arduino UNO (SMD Version)
Microcontroller: ATmega328P
14 digital pins + 6 analog inputs
Clock: 16 MHz
USB interface (CH340 chip in many versions)
๐ Difference from normal UNO:
Uses SMD (surface-mounted) chip instead of removable DIP
Cheaper but functionally the same
๐ก IR Proximity Sensor (included)
Detects objects using infrared reflection
Range: ~2 cm to 30 cm
Output: Digital signal (HIGH/LOW)
Comparator IC: LM393
Adjustable sensitivity via potentiometer
โก How it works
IR LED emits invisible light
Object reflects light
Receiver detects reflection
Output changes โ Arduino reads it
๐ Output is usually LOW when object detected
๐ Wiring (very simple)
| IR Sensor | Arduino UNO |
|---|---|
| VCC | 5V |
| GND | GND |
| OUT | Digital pin (e.g., D2) |
๐ก Applications
๐ค Obstacle avoiding robot
๐ Smart car
๐ฆ Object detection
๐ช Automatic door
๐ Line follower
โ ๏ธ Important Notes
โ ๏ธ Range is short (max ~30 cm)
โ ๏ธ Affected by sunlight and black objects
โ ๏ธ Not for accurate distance measurement
โ ๏ธ Needs adjustment via potentiometer
๐ Why choose this combo?
๐ Pros
Everything in one kit (beginner-friendly)
No need to buy Arduino separately
Plug-and-play learning
๐ Cons
Slightly costlier than buying separately
Less flexibility in choosing components
๐ง Final Understanding
๐ This is NOT a special new sensor
๐ Itโs simply:
Arduino UNO (SMD version)
standard IR obstacle sensor
โ๏ธ Perfect for beginners
โ๏ธ Great for quick robotics projects
