Quotedc42 You can drive all the EN pins of the stepper drivers from a single Arduino output, assuming you want to enable or disable all the motors together. That should keep the PCB simple. No i prefer to control the drivers separately, for the code it should be very little difference, only rename the the pin number to activate the needed driver(s), and when the pump go's idle, just send the commby havor - Experimental and Hobby
Quotedc42 I don't have time to check your design, but here are a couple of observations: To bad. ^_^ QuoteYou don't need to cut the power to the drivers to save power. Just disable the drivers, either by using the EN input to the drivers That's gone be hard to lay the traces, unless i use a 4layer pcb, but i could use wire bridges to connect EN to the bottom digital pins, not the cleanest solutiby havor - Experimental and Hobby
If you go whit a shroud, i would use this 15db 40mm fan from Noctua. Replaced the 4 Papst fans in my two network switches, and thy went from a real loud high pitch sound, to inaudible, and even slightly cooling better. And if you have the space, print you shroud in a funnel way, so you have more flow and less turbulence/noiseby havor - Experimental and Hobby
Hi people, i am building a water and nutrients controller for the vegetables i am growing in our green house, and is loosely based on the Ramps controller. It has to control 12 peristaltic pumps (hose-pumps), 1 big one for water 1L/min (18W), and 11 small ones for nutrients 5ml/min (<10W) This is what i got so far whit what i can do, could someone over look my design, to see if everything woby havor - Experimental and Hobby