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How to build Simple Servo Tester
November 30, 2010 - category: Miscellaneous toolsCircuit diagram
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
suggested panel decal
Parts
- R1 = 1K
- R2 = 10K
- R3 = 82R
- R4 = 10K
- R5 = 5K potentiometer
- C1 = 27pF
- C2 = 27pF
- C3 = 100nF
- D1 = 4,7V zener diode
- Q1 = 10MHz crytal
- IC1 = PIC12F675
Download PCB in Eagle format (.br )
author: EdwardM, maxwatted@yahoo.co.uk
circuit from http://www.electronics-lab.com/
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