3 ms·
You can connect the Voltage connector to the 3V over the 5V and run the fan at a slower speed and less noise. It will ramp into use for longer, but the noise d
by Zenst 6y ago
You can connect the Voltage connector to the 3V over the 5V and run the fan at a slower speed and less noise. It will ramp into use for longer, but the noise difference is worth it and case of you will certainly not notice it's activity as much.
Been nice if they just had the fan and connector attached to a new top for the case and could of added some side vents with height, making things just that much easier overall.
I myself have a 3rd party acrylic layer stack affair with a top fan and heat sink with 3V and run it constant as well below whisper level. I'd measure the dB but other systems currently mean my noise floor is 50dB and with sound meter right next to it, I get nothing above that. Though when just that a running, it a faint breeze sound at best.
- IshKebab 6y agoWhy isn't it PWMed with feedback control?
- nicexe 6y agoYou can't draw too much current from the 3.3V pin. I don't know what current this fan needs but it is safer to connect to 5V as it has some more room to safely draw current.
- Scoundreller 6y agoIf you run into issues with the 3V3 line, you could take the 5V pin and put a couple 1n4148 or 1n400x diodes in series and drop it in 0.7V increments. The right resistor might do too, you’ll have to figure out the draw on the fan to calculate what works.
- crististm 6y agoMicrophone for dB measurements should be put 1m away from the noise source. Not at 10cm and not at 5m. That's how the noise level gets defined. I've seen noise levels on cheap indoor air condition units that have unbelievable good figures; only that they measure at 3m; go figure. Smart phones indicated noise levels are irrelevant since they lack calibration. I don't understand why people discuss their figures.