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Raspberry PID

John B. Hall
June 18, 2015
180

Raspberry PID

Building a Real-Time Metro Arrival Board with Raspberry Pi and LEDs.

More explanation can be found at this blog post: http://johnbhall.com/raspberry-pid

John B. Hall

June 18, 2015
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  1. Raspberry PID
    !
    John B. Hall
    !
    @johnbhall

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  8. Supplies and Cost
    Raspberry Pi $45
    4 7-Segment Displays $44
    MicroSD Card $13
    WiFi Adapter $12
    Power Cord $12
    Picture Frame $12
    Breadboard $6
    Foam Board $3
    Total $147
    Soldering Station $38
    Wires $14
    Solder $9
    Diagonal Cutters $7
    Pliers $3
    Total $71

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  9. segment0 = SevenSegment(address=0x70)
    segment1 = SevenSegment(address=0x71)
    segment2 = SevenSegment(address=0x72)
    segment3 = SevenSegment(address=0x73)
    update_segment(segment0, customink_str[0:4])
    update_segment(segment1, customink_str[4:8])
    update_segment(segment2, downtown_str[0:4])
    update_segment(segment3, downtown_str[4:8])
    [3, 12] —> [“_3”, “12”] —> “_3_12” —> “_3_12_ _ _”

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  10. Thanks!
    !
    johnbhall.com/raspberry-pid
    !
    @johnbhall

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