Has anyone come across a liquid flow meter with a digital output? I have an application in which I need to deliver a fixed (programmable) amount of a liquid, and any of the industrial solutions I've seen are both bulky and expensive.
I'm thinking something like an arduino board as the smarts, but the key part would be a means to measure the volume of liquid, and send out a signal which can either be read periodically, or if a fully contained batch measurement unit, then send a signal when the amount has been delivered, to allow the controller to hit the relay on the solenoid valve ... or similar ...
Pointers would be appreciated ...
Cheers, Rob.