#rollermat

[burningbaal]

DIY rollermat

So there are a few ideas for DIY rollermats out there. The basic idea, is a roll of filter fleece (which are easy to buy down to about 20uM size). This is mounted, run down across a field where the overflow water pours, and up to another (’out’) roll where a motor can pull new material onto it.

The overflow water flows into this chamber, must flow through the fleece before it makes it to the rest of the sump. As the fleece gets clogged, the water column gets taller (and the higher column forces the water through the clogged fleece, to a point). At some point, it hits a float switch (or optical sensor), which turns the fleece so the water can flow through more easily.

Set the controller to turn on the ‘out’ roller for a fixed number of seconds (maybe 3?) and wait to see if the water level drops (maybe 30?).

Add a backup float switch above the normal one. If it gets hit, run the motor for 10 seconds and wait 2 minutes. Also send an alert (the primary sensor is either set wrong or there is something wrong).

Ensure there’s an overflow above the high sensor so the water can escape when necessary.

Buy some plastic gutter guard and light diffuser/egg crate. set the eggcrate as the base to support the fleece, and the gutter guard between the egg crate and fleece so the guard keeps the fleece as flat as possible, keeping good support to hold the fleece smooth.