39 lines
925 B
Python
39 lines
925 B
Python
"""
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Demo of a simple combination of parts from Electric Dollar Store:
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* REMOTE - remote control receiver
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* DIG2 - 2-digit display
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* BEEP - piezo beeper
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This demo runs a take-a-ticket display for a store or deli counter.
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It shows 2-digit "now serving" number, and each time '+' is
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pressed on the remote it increments the counter and
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makes a beep, so the next customer can be served.
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Pressing '-' turns the number back one.
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https://electricdollarstore.com
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"""
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import sys
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from i2cdriver import I2CDriver, EDS
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if __name__ == '__main__':
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i2 = I2CDriver(sys.argv[1])
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remote = EDS.Remote(i2)
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beep = EDS.Beep(i2)
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dig2 = EDS.Dig2(i2)
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counter = 0
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while True:
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k = remote.key()
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if k == '+':
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beep.beep(255, 90)
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counter = (counter + 1) % 100
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if k == '-':
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beep.beep(100, 80)
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counter = (counter - 1) % 100
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dig2.dec(counter)
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