Introduction: How to Make a Sensor
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Step 1: Getting the Tools
The tools are :
BC547 transistor
BC557 transistor
2 x ir led
100 ohm resistor
220 ohm resistor
Red led
BC547 transistor
BC557 transistor
2 x ir led
100 ohm resistor
220 ohm resistor
Red led
Step 2: Schematic and Soldering
I could not make a schematic, but I used a picture . solder the components according to the picture .
