DIY automatic can filling machine

thingiverse

NOTE: this is heavily work-in-progress, so please be patient:) 22/7/23 I will be uploading all the files needed for the filling machine here, with the core components first to get you started. This is very preliminary, at the beginning just a list of what is needed. Eventually I will write a complete how-to (if there is an interest), but that will take some time. ----------------------------------------- List of non 3-d printed parts for one filling head: ----------------------------------------- MG996R servo (metal gear, 180 degrees https://www.aliexpress.com/item/1005002991159736.html?spm=a2g0o.order_list.order_list_main.224.aa4b1802xkcY60 Pressure Sensor Module 0-40 KPa https://www.aliexpress.com/item/33002133490.html?spm=a2g0o.order_list.order_list_main.86.aa4b1802xkcY60 3-way solenoid valve 6V https://www.aliexpress.com/item/1005003321014352.html?spm=a2g0o.order_list.order_list_main.229.34391802DcrjSt 6V power supply (3 amps should do the work, but not less) Buttons (2) - any will do, it does not have be LED lighted, but it looks better and gives you feedback on what is going on during the filling process (I used 19mm momentary metal buttons, short stroke, 3-6V) https://www.aliexpress.com/p/order/index.html?spm=a2g0o.detail.1000001.36.6ba375cev4DrRj M3 threaded heat inserts (5.7-OD4.6mm) M3 bolts (8 and 12mm in length) Arduino UNO (good for two filling heads) Custom shield PCB (but you could get away with just a perf board), following parts need to be soldered: 1. BS170 (but virtually any N-channel MOSFET could be used, just watch out for the correct pin-out) https://www.aliexpress.com/item/33043571478.html?spm=a2g0o.order_list.order_list_main.76.34391802DcrjSt 2. 1N4007 diode 3. 47k resistor 4. XH2.54 JST connectors - 2pin and 4pin, while it is possible to permanently solder all the cables, it is much more convenient to use connectors like JST 5. Screw terminal 2pin (2.54mm) + DC power jack connector - again optional, but recommended 6. DuPont pin header 7. resistor for the button LED - optional, very likely not needed