http://www.futurekit.com

FUTURE KIT

FUTURE KIT

HIGH QUALITY ELECTRONIC KITS

HIGH QUALITY ELECTRONIC KIT SET FOR HOBBY & EDUCATION

R

NO.2

Figure 2. Circuit Assembling

LEVEL 3

DIGITAL COUNTER 4 DIGIT

à¤Ã×èͧ¹Ñº¨Ó¹Ç¹¢Öé¹-ŧ 4 ËÅÑ¡ µÑ駤‡Ò¹Ñºä´ˆ

CODE 936

Figure 1. The Digital Counter 4 Digit Circuit

NOTE:

FUTURE BOX FB04

are suitable for this kit.

µFµF

µF

µF

µF

Connection for add the board.

carry

OUT12V

+

-

CK/IN

IN 12V

+

-

out

Board 2 Board 1

preset counting and restart counting automatically

¹ÑºµÒÁ¨Ó¹Ç¹·ÕèµÑé§àÍÒäÇé áÅéÇàÃÔèÁ¹ÑºãËÁèâ´ÂÍѵâ¹ÁѵÔ

normal counting¹Ñº»¡µÔ

J1 is used for setting the counting format.

J1 ÁÕäÇéÊÓËÃѺµÑé§ÃٻẺ¡ÒùѺ

J2 is used for setting count up or count down.

J2 ÁÕäÇéÊÓËÃѺµÑ駡ÒùѺ¢Öé¹ËÃ×͹Ѻŧcount up

¹Ñº¢Öé¹count down

¹ÑºÅ§

10K

10K

1KJ

10K

C9012

3

C9012

4

C9012

1

C9012

2

C458

5

0.01

0.01

0.1

7805

4148

4148 40

01

LED

A

K

+47µF+ 10

µF

ATTINY2313

SW1 SW2 SW3 SW4 SW5 SW6

out

carry

OUT12V

+

-

CK/IN

IN 12V

+

-

FK936

1K 1K1K

10K

1K

1K

1KJ

300

300

300

300

300

300

1K 1K

2K

3K

J J 1K 1K 1K 1K

300

300 +

COUNT SIGNAL

POWERSUPPLY

12V

Figure 3. Installing the ComponentsRESISTOR

ELECTROLYTICCAPACITOR

Watch the polarity!

LEDTRANSISTOR

KA

KA

LED

LED

LED

C

+

+

C .....µFR .....Ω R

R

TRTR

C

+

PNP

BE

CNPN

B

E

C