Article
RF Probe
With LED Bar Graph
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Component list
Component List
Resistors
R1 = 6.8 Ω resistor, 1/8 W
R2 = 220 Ω resistor, 1/8 W
R3 = 330 Ω resistor, 1/8 W
VR1 = 1 kΩ potentiometer
Capacitors
C1, C2, C3, C5 = 0.1 μF, 25 V capacitor
C4 = 1000 μF, 25 V capacitor
Semiconductors
D1 = 1N4004 diode
DS1 = 5 mm LED
U2 = WS2812 8-LED stick
U3 = AD8307 logarithmic amplifier IC
Miscellaneous
J1 = DC power jack
S1 = SPST switch
U1 = Arduino Nano
Enclosure: Solarbotics Mega S.A.F.E.
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