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How to build Simple Servo Tester

2015-01-11 20:31  
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Circuit diagram

Simple Servo Tester-Circuit diagramclick here to download schematic in pdf

This is a simple servo tester which will comprehensively test the capabilities of almost any modern servo. It has two pushbuttons, CENTRE and SWEEP and a potentiometer which works as follows:

CENTRE Does exactly that, centers the servo, afterwards the potentiometer determines position.SWEEP Sweeps the servo back and forth at a rate determined by the potentiometer setting.

The PIC uses its internal timer to set up a constant frame duration of 20ms and the on/off ratio is set by the user.

Have Fun-Ed

PCB board

Simple Servo Tester-PCB board

suggested panel decal

Simple Servo Tester-suggested panel decal

Parts

R1 = 1KR2 = 10KR3 = 82RR4 = 10KR5 = 5K potentiometerC1 = 27pFC2 = 27pFC3 = 100nFD1 = 4,7V zener diodeQ1 = 10MHz crytalIC1 = PIC12F675

Download assembly code (.asm)

Download PCB in Eagle format (.br )









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