Yes, that first converter appears to have the correct specs and should work, although I have no experience with them. I would mount it to a heat sink of some sort as it looks like it will get hot with high outputs.
Other then that though, it should work well based on the specs.
It should work great, just make sure you get a 5V fan and install it somewhere blowing over the board along with exhaust holes as well. You can tap the fan into the existing fan output.
It controls the fan, which is why I like to tap into it. It only kicks it on when it gets hot or when outputting above ~6 amps. It also appears to be PWM as it blows harder the hotter it gets.
^
I imagine you could run a duct to the existing fan if you don’t want to add a separate fan. Just a tube going from the fan to the opposing side with vent holes to let the air get pushed out/drawn in.
You could but the existing fan is undersized for extended periods at high amps IMHO. The Shunts could also use some cooling as well which the stock fan does not do.
Now electronics can work fine at higher temps, I just don’t like them to be hotter then needed.
This is really cool, way past well enough done for the job. I'll just point out though that there is something called acrylic glue. It's rated for something like 2000 lbs per square inch too if used well. Not to criticize. Mine will look worse. I'll probably end up taping it to a shoe box and leaving it that way for 10 years.
Yeah, I knew there was glue for the job and I actually really wanted to make it screw together but I was in a hurry and didn’t feel like waiting for special glue lol.
No to mention that the hot glue is removable if I really wanted to and since I was not sure at the time how it would work in this, I wanted to be able to take it back apart if needed.
Replying to random old post... I doubt this is PWM. Looks like only two wires. PWM fans use 4. I believe it's 2 for power, 1 for PWM and 1 to signal rate back to the controller. However, as I recall there are motherboard fan controllers capable of just ramping voltage. I'm 99% sure that's true for 3 pin fans (that report their speed but don't take PWM) but I can't remember if any do it for 2 pin fans.That doesn't mean it couldn't be or isn't being done though. However different fans have different minimal operating voltages and it might not come on as soon as desired. Not to worry, the board should keep getting hotter until it ramps up the voltage more and it does eventually come on.
A fairly common trick (and I sometimes use it) is to wire two-wire fans between the 12V and 5V lines of a CPU PSU, running it at 7V instead 12, making it much less noisy, and in some cases still providing the desired flow, especially for extra case vent fans, hard drive fans, places where super insane speed really isn't ever needed.
Yeah, in the case of the 3012 I used a 12v fan and it kicks on as soon as the 5v fan but I had other 12v fans that did not. I would use a 5v fan if given the choice but all I had on hand was 12v and it worked fine so why not. Plus it was quiter.