I may have just sold my 2 migbot prusa i3 printers and then blown a lot of money on parts & filament to build the AX-02 Delta… I was only intending to sell one… I just need to wait for the quote on the bed, sort the acrylic parts, get a few small parts and the PSU, which leads me to my question. It’s going to be a 24v system with a 220v bed. It’ll be running DRV8825s driving the 0.9° 40Ncm motors from E3D with v6 hot end, everything will be driven by an AZSMZ with the matching LCD, so I need to know what is the ideal power supply wattage? I don’t want to go to overkill, by my calculations it should’t be pulling a maximum of 9A (216w, calculated by the 2A 8825s can pull), but I just want to make sure and see if it’s possible to get away with a little less.
At 9A the closest is 10A. I wouldn’t go that close. Go for a 15A or so. You ALWAYS want overshoot with PSU, connectors, and anything that has current running through it.
Also: I would stay away from AZSMZ. From an EE standpoint it has a number of violations/workarounds that aren’t safe
@Griffin_Paquette - realise I need to overshoot. I was more checking if I had my calculations right. Didn’t realise that about the AZSMZ, I’ve just cancelled the order. As it is, a few orders have just come in so I can stretch the budget futher so I’m gonna throw a Smoothieboard or Azteeg in.
I still vouch for @raykholo Remix. Such an awesome setup with the 2100 drivers.
As for the AZSMZ I was unaware until a couple months ago myself.
Did have a look, but the mini’s out of stock atm and I need to get the printer running within the next couple of weeks as I’m down on capacity after selling the 2 Migbots, so can’t work to a “sometime in February deadline”
Totally understandable . Very excited to see this delta build. Mine is 300mm dia too. Just a tad taller:-)
Yeah, I’m damn excited too. The main reason for this printer is that I’m losing a revenue stream via 3D Hubs as I’m getting a lot of parts that are over the XY Volume of the FB2020s, living in a University city that has deep roots in engineering has it’s perks, but I need a larger printer. I could have just scaled up the FB2020, but have wanted to take a look at the delta platform for a while, so this was my chance.
@Ax_Smith-Laffin that’s exactly why I’m building mine! Need to keep up with 3D hubs better and frankly the 250x200 wasn’t enough.
Aye it’s needed. I’m turning away more orders than I’m printing at the moment.
What’s the stepper voltage you’re running? I think you calculate the power draw from steppers by their power consumption, rather than the current they draw (because chopper drivers), i.e.
Watts_Per_Stepper ~= stepper_voltage * stepper_current * 1.414
so assuming you have 3v motors, each stepper would draw about 9W, but give it something like 15W for overhead; for 4 steppers + 40W for an E3D gives you about 100W but if you have a chinese power supply I’d go at least 180W+
I think I’m doing it right…but it’s best to double check
@Ishaan_Gov - Stepper voltages will be running at around 0.7-0.8v. The E3D stock is 25w iirc so should be less but I’m looking at about 10A (240w) which should be plenty to run everything and add in LED strips