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Dual Geiger-Müller Tube Arduino Shield
A High Sensitivity, Very Low-Power Radiation Sensor
With two tubes for increased sensitivity, this Geiger-Müller tube shield can turn your Arduino Uno into an instrument for measuring and recording nuclear radiation. It can even be combined with a Dragino shield for LoRa-connectivity. Collect radiation data in the “field” — and get access to it from all over the world!
Component list
Component List
Resistors
R1,R2,R11,R14,R16 = 330 k
R3,R9,R13,R15 = 5.6 M
R4,R8 = 2.2 M
R5 = 10 M
R6 = 1 k
R7,R12,R18,R20,R21 = 470 Ω
Capacitors
C1,C20 = 220 µF, 6.3 V
C2,C3 = 4700 pF, 1000 V
C4 = 10 nF, 6.3 V
C5 = 100 pF, 50 V
C6,C7 = 100 pF, 1000 V
C12 = 100 nF, 50 V
C14 = 1 µF, 6.3 V
C15,C16 = 4700 pF, 1000 V
C18,C19 = 22 pF, 50 V
Inductors
L1 = 4.7 mH
Semiconductors
D1 = diode 1 A, 800 V
D2,D3,D4,D5 = Zener diode 100 V 1.5 W
D6,D67 = red LED 3 mm (Marked T1 and T2 on PCB)
Q1 = 2N3904
Q2 = MJ13003
U1 = 74HC14
Miscellaneous
GM1,GM2 = Geiger-Müller tube, e.g. SBM-20
J1,J2,J3,J4 = set of Arduino Uno shield connectors
SPK1 = AC piezo buzzer, e.g. AC-1205G-N1LF
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