From nobody Mon Nov 18 11:53:37 2024 X-Original-To: freebsd-arm@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4XsQy70SCyz5d1Zs for ; Mon, 18 Nov 2024 11:53:51 +0000 (UTC) (envelope-from manu@bidouilliste.com) Received: from mx.blih.net (mx.blih.net [212.83.155.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4XsQy633Tyz4MfP; Mon, 18 Nov 2024 11:53:50 +0000 (UTC) (envelope-from manu@bidouilliste.com) Authentication-Results: mx1.freebsd.org; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bidouilliste.com; s=mx; t=1731930821; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=z65ZyNyYgpzPwFfdNBkvrnXxKzmVXffSzlo+KlmPj+s=; b=McPHK4ZJ6oGADacRiAG+38pH1h+8j4MZvSFuR8776gXj5AMBQj2Q9P3rY96DtM1eN+Sgty zWbq8grKAwvvGCzD3bG0iZgFRVjSH48E0DJUHWkt4a3BmpPDlEPyMv/83PToAuknGgDvDL IGzWWkGTfn1qzozz8tfKq/vu9eVVj4Y= Received: from skull.home.blih.net (arennes-299-1-68-49.w92-159.abo.wanadoo.fr [92.159.163.49]) by mx.blih.net (OpenSMTPD) with ESMTPSA id 1e4ea143 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO); Mon, 18 Nov 2024 11:53:41 +0000 (UTC) Date: Mon, 18 Nov 2024 12:53:37 +0100 From: Emmanuel Vadot To: Nuno Teixeira Cc: FreeBSD ARM List Subject: Re: rpi4 fan speed control Message-Id: <20241118125337.b54d024802f26faac8fa25c2@bidouilliste.com> In-Reply-To: References: X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; amd64-portbld-freebsd15.0) List-Id: Porting FreeBSD to ARM processors List-Archive: https://lists.freebsd.org/archives/freebsd-arm List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-arm@FreeBSD.org Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:12876, ipnet:212.83.128.0/19, country:FR] X-Rspamd-Queue-Id: 4XsQy633Tyz4MfP X-Spamd-Bar: ---- On Mon, 18 Nov 2024 11:03:29 +0000 Nuno Teixeira wrote: > Hello all, > > My rpi4 small fan is about to die since it started to have noises. Its a > small 40x10 fan attached to a plastic box. > > I'm thinking in something like: > https://www.zdnet.com/home-and-office/the-best-cooler-for-raspberry-pi-power-users/ > > Anyone controlling speed fan, i.e., not using fan a full speed all the time? > > Thanks, > > -- > Nuno Teixeira > FreeBSD UNIX: Web: https://FreeBSD.org I find the wiring a bit weird, usually you use a pwm controller to control the speed of a fan and we have support for rpi pwm (even though it's not handled by the pwm(4) framework iirc) but on the website they plug the control pin to the uart TX ??? Cheers -- Emmanuel Vadot