Introduction: Controlling Motor Using LDR
The idea is making Line Follower Robot by using LDR
LDR defines light resistivity and differentiate between white and black (TM1).
Voltage drop between LDR and R1 is used to trigger base of transistor (2N222) to allow motor movement on jumpers (J1, J2)
,When LDR< R3 motor will switch on ( white space)
When LDR> R3 motor will be off ( black lines)
JP4 for power (+12V)
Using two circuits with two motors will be enough for making Line follower Robot
Step 1: Board Layout
On eagle software after drawing the schematics, open board layout, add routes to the components and board border
Step 2: PNG Files
Extract PNG file for bottom layer, pads, dimensions and vias ... mirror the image
Extract another PNG file for only pads, dimensions and vias .... mirror image then switch white and black colors
Now the files are ready to be manufacutred on Modela Machine then Soldered
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