From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Phil Endecott" Date: Sat, 02 Jun 2007 21:57:49 +0000 Subject: Re: [lm-sensors] Jetway J7F2 with f71805: PWM not working Message-Id: <1180821469906@dmwebmail.belize.chezphil.org> List-Id: References: <1180813726137@dmwebmail.belize.chezphil.org> In-Reply-To: <1180813726137@dmwebmail.belize.chezphil.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lm-sensors@vger.kernel.org Thanks for the quick reply. Juerg Haefliger wrote: > On 6/2/07, Phil Endecott wrote: >> Finally, somewhat O.T., if it seems that I can't control the fan speed >> on this board, can anyone suggest a "hardware hack"? In the past I >> have built fan speed controllers with thermisters and op-amps, but >> something with software control would be better. > > That's fairly simple, typically a transistor between the fan and > ground, controlled by the PWM controller. The hard part is to get to > the components, especially on a Mini ITX board. You might have to > solder wires to pins and lift pins and fun stuff like that. Well this Fintek chip doesn't look too impossible; 1.27 mm pitch I guess. The docs say that Fintek provided a datasheet; does someone have a copy of it that they could send me? Or just let me know the pin numbers for the PWM outputs, and what sort of outputs they are? > Alternatively, you could use a i2c PWM controller (that is of course > supported by lm-sensors) and hook it up to the boards I2C bus, Mini > ITX typically have it exposed on a header. Yes, good idea, I'll investigate. I don't suppose anyone knows of a ready-made module or anything like that? Phil. _______________________________________________ lm-sensors mailing list lm-sensors@lm-sensors.org http://lists.lm-sensors.org/mailman/listinfo/lm-sensors