Noise reducer pro review3/17/2023 ![]() ![]() With 12V now being routed to my 24V hotend fan, it was now time to replace that fan itself. I did get some purchase on my threads though, so I rolled with it. This was a terrible plan only because the casing’s walls are just to thin to effectively tap. I decided to attach my buck converter by tapping M3 threads in to the control board casing. This gave me room for the hotend and control board fans, plus something else in the future (TBD). So I overall decided to have that fan port drive a buck converter that I put 3x 2-pin JST connectors on. ![]() I looked at the schematic and believe that it should be good to source enough current to run quite a few fans. I decided to use the fan pin from the SKR board. In order to install a 12V fan, I first needed a way of providing 12V. SKR Mini e3 1.2 after installation: Stage 2: Reduce Hotend Fan Noise It’s wise to snap photos of your board and connections before to you start unplugging. The SKR Mini e3 1.2 is a drop-in replacement for the Creality board that comes with the Ender 3 Pro. If you signal your control board to use Spreadcycle mode, then the steppers will be a lot more noticeable, but for the gain of probably better position accuracy. A eventually learned that the 2209 stepper drivers can be switched between StealthChop2 mode (the default) and Spreadcycle. I knew to expect this, and it still blew me away. I promptly installed an SRK Mini e3 motherboard ( from Spool3d) and was immediately stunned with how my steppers became nearly inaudible. I used these to fasten my PSU fan to the PSU case My PSU replacement fan sat outside the PSU, so I made a cover to protect the blades. Replaces the nozzle cooler, I’m really not convinced this one was actually quieter Optionally for the Power Supply – this one required actual modification of the PSU Two 40x10mm DC fans, one for the hotend cooler and one for the control board cooler Here’s something similar – Link.ġ2V Noctua 40mm x 10mm fan (NF-A4x10-FLX) (Other JST connectors should be fine too, seems that the supply varies a lot, just use something of a decent gauge) Very handy for making changes, or replacing parts later, totally worth it. PartĬontrol Board with ‘quiet’ stepper driver chips (TMC 2209)Īble to convert 24V DC in to other voltages, such as 12V for fansġ (needed), bought a bundle of them though I linked where I got mine, but you can get all this stuff from Amazon, or whatever works for you. Note everything listed below can be sourced from a ton of places. I’ve some some other mods too, but these ones are sound-specific. Here’s a list of the parts I swapped in to my Ender 3 Pro for noise reduction. Here’s a quick list of the changes that I made that have substantially reduced the noise generated by this machine. ![]()
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