This is a fairly simple way to mount the vacuum pump to the z-axis as close to the uni tool mount as possible. Note I am using the FarmBot indoors so don’t have to cover the pump. The weight doesn’t seem to affect the z-axis. Sorry should have added it to this thread instead of starting another.
I noticed even though the pump is ~10cms away from the seeder nozzle there wasn’t a massive increase of vacuum pressure. I think this is because the nozzle hole is so small or the pump needs to be more powerful. I have thought of a possibly better design I might try out.
Basto for me the nozzle (the smallest black one) needs to be 1mm from the seed to pick the seed up.