Multiple Pulse Reader Hat

Expand the capabilities of your Raspberry Pi quickly and easily using expansion boards. [Product list]
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bradhnz
Posts: 2
Joined: Mon Apr 03, 2017 2:00 am

Multiple Pulse Reader Hat

Post by bradhnz » Tue Jan 16, 2018 7:38 am

Is there a hat available as I need to read 3 water pulse meters which will then send a csv file back to a server.

Any help apreciated

Brucepet
Posts: 1
Joined: Thu Apr 12, 2018 2:45 am

Re: Multiple Pulse Reader Hat

Post by Brucepet » Thu Apr 12, 2018 3:15 am

You can go direct into the GPIO, will need to use hardware or software pull ups, or if the water meters output a voltage pulse you may need to reduce it to 3.3 volts max. I am using a pi on my boat which monitors (among a host of other stuff) two engine tachos. The tacho pickups are magnet/hall effect sensors, they output a pulse per revolution. I use interrupts to time each pulse. I see no reason this wouldn’t work for three pulse inputs. See wiringpi.com for ideas on programming.

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