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RF Probe

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RF Probe

In this article, ham radio operators and Arduino enthusiasts of all skill levels get to create a wideband RF signal sniffer based on the Analog Devices AD8307 Logarithmic Amplifier, a WS2812 RGB LED strip, and the Arduino Nano with a sketch to suit. Glen, KW5GP, over to you!

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Materials

Sketch and libraries

Products

Arduino for Radio Amateur Applications (E-book)

Arduino for Radio Amateur Applications (E-book)

Arduino for Radio Amateur Applications

Arduino for Radio Amateur Applications

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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