lower speed/noise fan
anyone sort out a quieter fan? I'm thinking about this $15 noctua.
comes with speed limiter in box (Zener diode maybe) that gets you to 4100 rpm vs the stock 7000 rpm.
easier than wiring into the arduino for temp control....
amazon.com
www.amazon.com/Noctua-NF-A4x10-24V-PWM-Applications/dp/B0CN39MCPL/ref=sr_1_4?crid=3B8EMN4850AZC&dib=eyJ2IjoiMSJ9.ylXPI6szhYc8gCndWqU9YG-2w7PhhRX6gUVoaA8FZbbA6utTxGGKtqwLkdn24uZYR6gsQRpkNA6wCIjmzbzX_-RwRg5SkEvnAyBngfZXEvKPnZPfiiqz_bP8Vvo5koReCPhN_xdvLGQ1F8_8oyqXHX44tlPQbxVv0_LxcT-h_3kYegjwuwQGVKjjtpsGpKvHejS-hWL2GpUcopbyfTx1gKCVgZOzPsCY_k1oLoJT4Kv3_MS3Fxi_l8qfgCrHfKXrl6UVNF8hkaKYkouYrg8BQaPAgAlHSMh-N2Jcsa9_Cg8.4Wd_gPlRxe_ciPl5ZlU2VyGWWKeKZBwdVAvgIKVwnIc&dib_tag=se&keywords=40mm+24v+fan+mx&qid=1750798773&s=industrial&sprefix=40mm+24v+fan+mx+%2Cindustrial%2C70&sr=1-4
I also swapped out with the same Noctua fan- I tested it with and without the included "low noise adapter" and found that it didn't really make much of a difference given there's some noise from the motor drivers. That being said- it is a game changer, and while not completely silent, I can leave the robot powered on without being bothered at all.
2 replies

Gilles SAUVAGNAT
Hi,
I just received the Noctua NF-A4x10 24V PWM. That's definitely a game changer. Without an adaptor, which is the case as used in the robot enclosure, it runs very quietly at 5000 rpm
Best regards