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One-Armed Bandit

A Simple, Fun, Nostalgic, and Educational Elektor Classic!

One-Armed Bandit
One-Armed Bandit
Here’s another project selected from Elektor’s long history of “idea-oriented” mini articles typically found in the erstwhile Summer Circuits magazines. Back in 1984, “One-Armed Bandit” was just one of around 100 schematics, each with a few words of clarification. Almost 40 years on, we’re not just recycling this content, but actually enhancing and honoring it with a real PCB and a fancy kit from the Elektor Store. We do so all in good spirit and with feelings of light nostalgia after the glory days of 4000-series CMOS logic!  
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Materials

Component list

Component List

Resistors

R1,R2,R3,R4 = 100 kΩ, 5%, 250 mW

R5,R6,R7,R8,R9,R10 = 1 kΩ, 5%, 250 mW

 

Capacitors

C1 = 4.7 nF, 10%, 50 V, lead spacing 5 mm

C2 = 4.7 µF, 10%, 63 V, axial

C3,C4, = 100 nF, 10%, 50 V, ceramic X7R, lead spacing 5 mm

 

Semiconductors

LED1...LED6 = LED, red, 5 mm diam. (T1 3/4)

IC1 = 74HC4024, DIP-14

IC2 = 74HC132, DIP-14

 

Miscellaneous

S1 = Switch, toggle, 21 mm lever actuator, SPDT, momentary action

S2 = Switch, tactile, 24 V, 50 mA, 6x6 mm

S3 = Switch, slide, SPDT (C&K OS102011MS2QN1)

IC socket, DIP14, for IC1, IC2

BT1* = CR2032 coin cell battery

PCB Mount CR2032 battery retainer clip

Desktop stand, wooden, engraved

PCB 230098-1

 

* May not be contained in Elektor-supplied kit due to transport restrictions.

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