Dosing pumps - development discussion

[Skybound]

My dosers are still on the back burner. Some new developments have kept me from getting back to them, but I do have a 3d printable 4 pump design that will hold an ESP8266 and 2 -L298N motor drivers, 4 pumps and inlet 12V, so all I’ll need to add is 12 volts running power and the ESP will get it’s power from the motor drivers. I’m also in the process of migrating my project over to several ESP boards so everything can communicate wirelessly. When all’s said and done, I plan to run 12-16 dosers. I’m also looking to see if I can build everything to sell on eBay or Amazon for about $100, maybe less for each bank of 4 pumps, code and wireless connectivity.