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Temperature Control With Arduino and PWM Fans
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Il you drive the fan with PWM, the RPM reading will be wrong because you're basically switching the fan on and off. Some fans might still report a correct measure if the RPM reading works with the fan turned off, but it's not guaranteed. Happy that you enjoyed my instructable ?
I just checked on Amazon, and the difference between PWM and non PWM fans is just 16cents, so yes, you would save about 1€ but you won't be able to see the actual RPM. Don't know if worth, but if you have 3-pin fans lying around the house it'll just work fine.
Well, you will actually need a transistor to drive a 12v fan through PWM, And you will not be able to read the speed of the fan. Another solution is to drive the fan using a voltage regulator, but this adds complexity, inefficiency and cost.
Temperature Control With Ar...View Instructable »
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Hi! Sorry for the very late answer.The HDMI was added with a conversion/upgrade to a media center in mind. It's not used with the actual configuration. In the future I may upgrade this project (using a more powerful Raspberry, of course) to a more complete media center with a great sound quality.
Hi! Thanks for the interest. I've got a question for you.Do you want to stream audio files directly from your phone or do you want to just control the player from the phone?Actually Volumio supports Spotify streaming (Only for premium users, there is no way to bring this to free users), AirPlay and streaming from local or network storage, but Volumio2 is in the works (Checkout their repo, it's awesome https://github.com/volumio/Volumio2) and will include a plugin system that will hopefully bring some new features. I also use an external amplifier (The Marantz you see in the pictures) and I'm very pleased with the quality. Let me know your thoughts!
Actually, finding a power supply with this spect is not that easy and i bet a linear one will cost me more. The actual setup is already great for me so I'm not going to upgrade, for now.I think that the bottleneck in quality is the Raspbery, so a Raspberry upgrade might bring some bigger improvements than a new PSU.
That'll be awesome! But the quality is already great and I don't think i will upgrade this anytime soon.
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