| Click here to select a new forum. |
| Fans.....who needs 'em? |
Posted by: paws on 2020-10-16 22:29:36
Eh, I can hardly open a cupboard here without a microcontroller board of some kind falling out, I'd love to see that code.
Don't you need a transceiver to speak RS422 to the Mac, though? I was actually thinking about this today, since I have some high quality faders that I want to make a MIDI fader box. And of course, the sensible thing would be to just put MIDI sockets on it, but when it's for connecting to a NuBus ProTools rig, sensible isn't really a design requirement, more like the opposite...
|
Posted by: cheesestraws on 2020-10-16 23:39:55
Don't you need a transceiver to speak RS422 to the Mac, though? You can just ground the differential signalling pins and speak RS232, which I assume is what's going on here...
|
Posted by: Crutch on 2020-10-17 03:45:41
Right. You need a MAX232 IC to convert the Arduino’s TTL serial to RS232, and then you can convert that to RS422 just by wiring it up correctly. That’s what I did here.
|
Posted by: error1 on 2021-01-27 09:03:14
Now that PWM controlled fans are so common, how cool would it be to build on that idea and have a fully software controlled fan as a menubar extension on classic macs 😀
there's a library here https://create.arduino.cc/projecthub/tylerpeppy/25-khz-4-pin-pwm-fan-control-with-arduino-uno-3005a1 and I'm sure the arduino could handle reading the fan tacho signal too
|
Posted by: ymk on 2021-01-27 09:35:00
Ok, I’m convinced! Any suggestions for good, quiet (QUIET!) fans?!
- be quiet! Pure Wings 2 80mm, BL044
- Noctua NF-B9 redux
I run those in my PM6100 and Centris 610 at reduced speeds and they are virtually silent. Convection cooling isn't viable for these machines. With no fan, the top of the PSU will get hot, but even a slow fan keeps it near ambient.
Right. You need a MAX232 IC to convert the Arduino’s TTL serial to RS232, and then you can convert that to RS422 just by wiring it up correctly. That’s what I did here.
Neat project. Would feeding TTL directly to the Mac's opposite input pin work?
|
Posted by: ymk on 2021-01-27 10:27:11
Noctua NF-B9 redux
Correction: Noctua NF-R8 Redux
|
Posted by: Crutch on 2021-02-02 00:32:54
Neat project. Would feeding TTL directly to the Mac's opposite input pin work? No, that can get you from RS232 to RS422 (which is what I did here actually as the last step), but you need the MAX232 transceiver to get the voltage levels out of the Arduino right first.
|
Posted by: demik on 2021-02-02 02:04:08
...I really wish they weren’t tan and brown plastic. I know I shouldn’t care but, ugh.
They do have a nice grey line now. Different airflow profile or something. Should be fine
|
Posted by: jessenator on 2021-02-02 03:31:53
One of their big "goals" for 2021 is a "white" line of fans :lol: As Steve from GamersNexus said, something that no one would bat an eye at from any other company, but from Noctua, it's a big deal.
|
| < 2 |