Introduction: BC 557 HEAT SENSOR
HI, THIS IS A SIMPLE HEAT SENSOR USING BC557
Attachments
Supplies
SOLDERING IRON
IMM SOLID COPPER WIRE
WODDEN BASE
Step 1: MAKING BASE
I MADE THE BASE BY CUTTING A SMALL PIECE OF WOOD AND BURNT IT USING GAS LIGHTER AND DRILLED SMALL HOLES SO THAT I COULD FIX SOME SOLID COPPER WIRE TO SOLDER THE COMPONENTS
Step 2: CIRCUIT
THIS IS A SMALL CIRCUIT DIAGRAM WHICH USES A PNP TRANSISTOR BC557 AND A DIODE 1N4148 AND A 5MM LED AND A CURRENT LIMITTING RESISTOR (150OHM)
Step 3: AFTER SOLDERING
AFTER SOLDERING