Author Topic: COIN SLOT INTERFACED WITH PIC16F84A AS (COIN COUNTER) (Read 1189 times)

ssenia_tech · « **on:** September 17, 2010, 10:41:58 AM »

HELLO SIR/MA'AM...

ask po sana about interfacing the coin slot with microcontroller,,,
may program na po pra sa counter ng every drop ng coin..
the behavior is,, every time na may ihulog na coin, it counts as one, then it increments every coin drop...
i treated the coin slot like a push button.. every push increments..

may problem is, im using an S.R CPU COIN SELCTOR, it has 5 wires:
black----grnd
red----12v
white---coin signal
gray1(+/-)---counter
gray2(-/+)---counter

which of these wires (white or gray(1or2)) ang e coconect ko sa input port ng PIC16F877A??

salamat po...

Philippine Electronics Forum · « **on:** September 17, 2010, 10:41:58 AM »

cutenash123 · « **Reply #1 on:** December 17, 2010, 03:27:43 PM »

medyo mag kaparehas pala tau ng problema gusto ko kasing gamitin ang pic16f84a. coin operated sanitary napkin dispenser ung project ko sana my makatulong

Philippine Electronics Forum · « **Reply #1 on:** December 17, 2010, 03:27:43 PM »

dummy_c · « **Reply #2 on:** January 29, 2011, 09:43:43 AM »

^^^ UP lang po.. ano na ba nangyari nito?

Philippine Electronics Forum · « **Reply #2 on:** January 29, 2011, 09:43:43 AM »

helirage · « **Reply #3 on:** February 02, 2011, 09:35:50 PM »

UP ano po nangyari dito???

napagaralan ko na it uses pulses

Philippine Electronics Forum · « **Reply #3 on:** February 02, 2011, 09:35:50 PM »

motion55 · « **Reply #4 on:** February 03, 2011, 07:10:59 AM »

Quote

which of these wires (white or gray(1or2)) ang e coconect ko sa input port ng PIC16F877A??

Bakit ayaw ninyo subukan pareho? Subukan one at a time kung alin gumana. This is part of gaining experience. Nothing is fed to you in a silver spoon.

Ang gut feeling ko pwede pareho. The white wire is probably open collector output. You can input then to the PIC with a pull-up to the PIC's supply. For safety, try with just pull-up and check first with a voltmeter.

The gray1 and gray2 wires are probably opto-isolated outputs. Polarity can be any direction. They are probably not TTL compatible. The signal needs signal conditioning before inputting to the PIC.

Philippine Electronics Forum · « **Reply #4 on:** February 03, 2011, 07:10:59 AM »

maldihtah13 · « **Reply #5 on:** February 04, 2011, 10:06:07 AM »

Ingat sa connection 12V ang output nyan.

Shuai · « **Reply #6 on:** February 11, 2011, 10:05:23 PM »

Hi there.. can you share your circuit diagram?.. because i have a similar project.. thank you..

Phthonos · « **Reply #7 on:** August 16, 2011, 03:45:18 AM »

dummy_c · « **Reply #8 on:** August 16, 2011, 08:05:12 AM »

^ Anong model ng coin slot mo sir?

Phthonos · « **Reply #9 on:** August 19, 2011, 12:15:58 AM »

ung coin slot ko po not sure qng anong model eh. . basta po multi coin slot xa na pulse ang output. . just wondering qng pano ko iinterface ung coin slot s computer. for example po P1=1 pulse and P5 = 5 pulses.

Philippine Electronics Forum · « **Reply #9 on:** August 19, 2011, 12:15:58 AM »

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