DN Staff

April 26, 2004

2 Min Read
Additional Parts Required: Duct Tape and Baling Wire!

Whiz kids (and Colorado State University engineering students) Curtis and Dennis built a cool learning toy that tests the user's knowledge of binary numbers. A microcontroller generates a random 16-bit number that is converted to 8-bits and displayed in binary form using eight LEDs. If the user's guess (entered in decimal form) matches the number, a motor activates a shaft, releasing a gumball. If the guess is wrong, an appropriate sound for a loser is produced through a digital sound module.

Binary-to-decimal learning machine parts list

Amt

Part Description

Allied Part #

1

24V, 1.7A power supply

298-0108

1

12V regulator

935-3050

1

5V regulator

935-9372

8

Red LED

505-9500

1

Blue LED

509-9720

1

Red LED for testing

505-1348

1

1k Ohm potentiometer

753-2260

5

0.1 mF capacitor

852-5685

1

1.0 mF capacitor

852-5674

1

Solid state relay

788-0168

1

Proto type board (large)

977-1951

2

Pushbutton switch

747-0790

1

Toggle switch

757-4885

To see the entire project in pdf, go to
http://www.designnews.com/contents/pdf/gf426Projectrept.pdf

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