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  • Author Author: colporteur
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Raising the Bridge...Automation with Arduino: Pin Count

colporteur

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The comments posted from my initial blog entry got me to thinking. Did I size this correctly?

The bridge spans the Mainland to Island. At either end of the bridge is a gate, an area to halt the bus and warning lights flashing when the bridge is closed. In addition to the lights, I've added a warning sound. At one end of the bridge is a ramp that enables the bridge to avoid the road bed as it rises. A trigger to raise the bridge will be the Tug and to lower the bridge the Turn-About. The bridge motor is using a L298 module and the bus halts, gates and ramp are servo motors. All toll I'm counting 14 pins required.

D2 Bridge Up limit
D3~ Ramp Servo
D4 Bridge Down Limit
D5~ Island Gate Servo
D6~ Mainland Gate Servo
D7 Bridge L298 Motor IN2
D8 Bridge L298 Motor IN1
D9~ Bridge L298 Motor EN A
D10~ Island Bus Halt Servo
D11~ Mainland Bus Halt Servo
D12 Warning Sound JQ6500
D13 Tug Sensor
D14 Turn-about Button
D15/A0 Island Warning Light
D16/A1 Mainland Warning Light
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  • As well as the bridge raising/lowering warning sound, the sound module could also perhaps set off a couple of tugboat horn blasts as it approaches the bridge. This gives the chance to attract people's attention to the fact that something of interest is about to happen over by the bridge so as they don't miss the automation (or collision).

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  • As well as the bridge raising/lowering warning sound, the sound module could also perhaps set off a couple of tugboat horn blasts as it approaches the bridge. This gives the chance to attract people's attention to the fact that something of interest is about to happen over by the bridge so as they don't miss the automation (or collision).

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  • in reply to beacon_dave

    I just prototyped a PCB that combines a Nano and a JQ6500 sound module and a MOSFET driver. With a button input it produces light and sound. I'm thinking of off loading the sound and light to this module, I had a similar module that used a DFPlayer. Using SD cards for the few sound files was expensive. The JQ6500 seems to be a good replacement.