Dark Sensitive LED Light

Dark activated LED light is a simple project which operates a LED when the light falling on the LDR goes below a set point.  The circuit is built using LM393 comparator, LDR as light sensor, preset (potentiometer) for sensitivity adjustment, transistor to drive the LED. The project can also be considered for use in energy saving application.

Features
  • Input – 12 V @ 1A
  • LED 12V 500mA Maximum (6W)
  • Onboard Preset for Level Adjust
  • Operation LED Indicator
  • On Board Power LED
  • Header Connector for Power Supply and LED
  • PCB dimensions 55.45MM X 12.70 MM

Dark-Activated-LED-Light-SCH

SCHEMATIC

Dark-Activated-LED-Light-BOM

PARTS LIST

Dark-Activated-LED-Light-Wiring

CONNECTIONS

Dark-Activated-LED-Light-001

PROJECT PICTURE

Dark-Activated-LED-Light-002

PROJECT PICTURE BACK SIDE

16 Channel Infra Red Remote Control

16 Channel Infra-Red remote controller is based on PIC16F73 Micro-controller from Microchip. The receiver part follows RC5 (Philips) Code Format. Tiny receiver provides 16 latch outputs or 8 Latch + 8 Momentary outputs by closing Jumper J1. All outputs are TTL and can drive Relay board or solid state relay. The circuit uses TSOP1738 Infra-Red receiver module which provides high degree of noise immunity against interfering light source.

Features
  • Supply Remote Transmitter RC5 Philips 2XAAA Battery
  • Supply Receiver 7V to 12V DC
  • Modulation 38Khz
  • Philips RC5 Code Format
  • Operating range up to 20 feet
  • 2 Pin Screw Terminals for Supply Input
  • On Board Power LED
  • Onboard VT (Valid Transmission) LED
  • All Outputs TTL Level provided with Header Connector
  • Jumper (J1) for Mode Selection
  • J1 Open 16 Latch Outputs
  • J1 Closed 8Latch + 8 Momentary
Application
  • Robotics
  • Lights
  • Fans
  • Home Appliances
  • Remote Door closer
  • Remote Curtains
  • Security Systems
16-Channel-Infra-Red-remote-controller-SCH

SCHEMATIC

16-Channel-Infra-Red-remote-controller-BOM

PARTS LIST

16-Channel-Infra-Red-remote-controller-001

PROJECT PICTURE

16-Channel-Infra-Red-remote-controller-002