Versatile Servo Tester
Check Behavior When There’s No Datasheet

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Component list
Component List
Resistors
R1,R3,R4,R5,R6,R10,R11 = 150 Ω
R2,R7,R12,R13,R14 = 1 kΩ
R8,R9,R15 = 10 kΩ
T1 = 10 k potentiometer
Capacitors
C1,C4 = 100 nF
C2 = 1 µF/10 V radial
C3 = 10 µF/10 V radial
C5,C6 = 18 pF
Semiconductors
D5 = 1N4007
Q1,Q2,Q3,Q4,Q5 = 2N3904
U2 = PIC16F1829-I/P
U3 = 4-Digit 7-segment CC LED display 3461AH
U4 = 3.3 V LDO LP2950-3.3
Miscellaneous
U1 = 32 MHz crystal
X1,X2 = switch SPST
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