Quotev1talogy If that is the case, what happens if you manually give them a 'nudge', just to help them get going... do they continue to spin afterwards?Yes given a little nudge they do start to spin just fine, seems like at 24v (and 24v volt fans) do require more initial power to get them spinning. QuoteDust most likely this is just the fans... your previous example is an anomaly Some have hby chilicoke - Firmware - Marlin
Hi, I'm building my Frankenstein test machine running on Ramps 1.4, 24v, and Marlin 1.1.8. On my 24v part cooling fan, anything below 90/255 on the PWM fan control the fans just make whine noises and not spin, 100/255 will finally kick them over at fairly high speed, once spinning I can dial the fans down to as low as 30/255 for less air flow. My Taz 5 (that also runs 24v) used to have the saby chilicoke - Firmware - Marlin
I've fix the problem, and you're right that I did accidentally short 12v to hotend thermistor after pulling all the wiring. The Mega was still behaving weird after fixing the wiring so I replaced it with a new one, all is good now. Ramps was fine and didn't need replacing. Thanks!by chilicoke - RAMPS Electronics
My DiVinci 1.0 running RAMPs 1.4 started to behave weird lately. If the printer is off (Ramps not getting 12v) but the Mega is being powered via USB (5v only), the thermistor reads perfectly fine. But when the printer is powered on, it instantly stops reading. It's a generic 100k Thermistor with option 5 in Marlin. Put on another one, same reading. Even when it's dangling outside the hotend, nby chilicoke - RAMPS Electronics
So Lulzbot Mini 2 was announced and I've been wanting to see how they prevent bed drop since their prototype files first showed that its Z will be belt driven. It appears they are using the same "brake" warbunniex had suggested. After considering how much belt length and reduction drive I would need to minimize bed drop with my 3/8 Mic6 plate, I am leaning towards keeping the belts short keby chilicoke - CoreXY Machines
Would love to see the water cooled jacket as well. I'm using 40mm 5v fans for all my V6s and they're near silent. The original 30mm fans sound like jets.by chilicoke - CoreXY Machines
That unit looks very nice. I did considered linear guides briefly but it was screw driven instead of belt, it was was a used unit locally but I couldn't get much info on it (wanted to keep overall build buget reasonable) so I moved onto figuring out rest of the printer first. Looks like that unit is using a geared stepper motor, I'd love to hear your feedback on if it has any backlash or not forby chilicoke - CoreXY Machines
Good to learn that Nema 23s are viable options, will definitely consider it as I continue to evolve my design. Now that I am trying to find the best Z belt path for my printer to make sure it will clear other stuff, I am starting to debate if it's really worth going with belt lift, or if should I just go with the more conventional lead rod method. As I am still in the early stage of component pby chilicoke - CoreXY Machines
Thanks for the detailed response the_digital_dentist, I do have your blog bookmarked and it is a good inspiration for wanting to make my own printer from scratch. I was hoping to belt lift Z with same Nema17 steppers as the rest of the printers to keep part sourcing simple, 9mm GT2 belt to reduce belt stretch, and belt pulley for drive reduction to avoid any sort of toothed profile gears to shoby chilicoke - CoreXY Machines
QuoteQdeathstar The DuetWifi makes your printer about 50 percent quieter right out the box because it drives the steppers better. It also has a snazzy web interface which means you’ll never have to use sd cards or tether to a pc.... Exactly what I'm looking for, Ramps + TMC2130 + Raspberry pi for Octoprint is already getting close in terms of cost, but the speed limit on coreXY definitely make Duby chilicoke - CoreXY Machines
Currently using a Taz 6 that I'm relatively happy with, but a little bit jealous of you guys' fast and nimble coreXY machines. Always wanted to build a printer from scratch, initially figured I should just do budget build of an already proven design to first understand each designs limitations and progress along. Considered D-bot, HyperCube Evolatution, and Voron1.5/2 (made a post in Reddit butby chilicoke - CoreXY Machines