From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ej1-x629.google.com (mail-ej1-x629.google.com [IPv6:2a00:1450:4864:20::629]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 62FF63B2A4 for ; Fri, 19 Mar 2021 00:16:55 -0400 (EDT) Received: by mail-ej1-x629.google.com with SMTP id ce10so7458099ejb.6 for ; Thu, 18 Mar 2021 21:16:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=UybRk1H62ZF32uhvNqaZ1w2m7FfBwOuaS0mwUfQ8MMI=; b=tKy95I/nH/JaBxaQRZ1CEN+QTWojTXGawqYFKMwgu1GLvNFKTAwjLqNS82Zk0dzkau g07aAvcY01sFQJAt6YHAipPEfWlpk4Zy3c1zqSvERYxrTTeEbfLUkuK/EZsXuoayCWDU JAc2HN4yS0hR1ulcj1fXpC1N6+RKVbDk5QEFKLlBZ4pyUojAp45vhCw69H7QLAd848eD RrvsM/32VyFDNnCTcYeqFfbh5aygFbt32VXcVp+boD1KzvH4tjIVxvUAPpibuiNsswR+ B2EIoRFRIJjBix2JAsb06OK5ZrPRXA6IMKiEXsR87JZKptC88t3sm+yWiLIaBDQ5Cxz9 8P6Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=UybRk1H62ZF32uhvNqaZ1w2m7FfBwOuaS0mwUfQ8MMI=; b=kd5lW8a/xIIZEYHLvVbSb0ruF84YlANS1hozRz2UqacAKKAKLTufMWu7zGRv7vDaB1 6M5NET2omBevw+YSXrYz3+7cuolpQx7Mo6RyUGUTXbbxtqksMQqQ9CuraiA2NSuIBU+q 6fEKLJk9NTFaKEmNyPgNlYGnCm8hm4BSHLzvXyHEUmAPMog39+TzzenhuiW0FSFplB4y Kfv0q2BxqD0CLvXtmVGZ03nshqi5RwFtauEie+AbM0joj+98HDyMmZbxOMMqWuna5Kpg d0sbmXb9DXKyLSaqtuyFXBVcQ3O3+qrGDhhLIOJKjwPok7/vh0cyl9fYbvXdYlNQTeg7 5CDg== X-Gm-Message-State: AOAM533PXrO2qAzLTmAf7j5qL/b1b48DC9e5cckMTX9I1tX5qtnI+ff1 GsHl1aBQK5bqlTAOUbSfnq+4a6lqkni9Z+bsXSM= X-Google-Smtp-Source: ABdhPJz/kIaiXPo/hPcmFgV4/yXwZNn9HeAlz0cB9iVkZYs0EVpfDkWjPNMdMXpM4sC6hQ0Idl2SFM3jZn9wchMmUVw= X-Received: by 2002:a17:906:3b84:: with SMTP id u4mr2099278ejf.431.1616127414430; Thu, 18 Mar 2021 21:16:54 -0700 (PDT) MIME-Version: 1.0 References: <181633.1615944270@turing-police> <51FCD342-3317-44C2-AAFA-B3D6D310FAD7@gmail.com> In-Reply-To: <51FCD342-3317-44C2-AAFA-B3D6D310FAD7@gmail.com> From: Aaron Wood Date: Thu, 18 Mar 2021 21:16:43 -0700 Message-ID: To: Jonathan Morton Cc: =?UTF-8?Q?Valdis_Kl=C4=93tnieks?= , cerowrt-devel Content-Type: multipart/alternative; boundary="00000000000072ed3d05bddbfcc7" Subject: Re: [Cerowrt-devel] semi off-topic: LEDs on WRT1200AC X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Mar 2021 04:16:55 -0000 --00000000000072ed3d05bddbfcc7 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable As they're white LEDs, voltage (well, the current-limiting resistor used) will probably matter (different color LEDs tend to take different voltages/currents for the same brightness) On Tue, Mar 16, 2021 at 8:06 PM Jonathan Morton wrote: > > On 17 Mar, 2021, at 3:24 am, Valdis Kl=C4=93tnieks > wrote: > > > > Apparently, replacing them isn't *that* hard, but some of the > > details are sketchy. In particular, does anybody know what part number > > is a suitable replacement? > > What you need to determine is the package form/size and the LED colour. > Probably even the latter is not critical. Then you can obtain replacemen= ts > through any electronic component dealer. > > Through-hole LEDs will be described by their optical housing dimensions. > Circular ones are typical, so measure the diameter. Then check whether t= he > top surface is hemispherical or flat. > > Small surface-mount indicator LEDs (not the larger ones used for lighting > applications) will usually be described by a four-digit package code that > is common to resistors etc, and simply describes their width and length. > This shouldn't be too hard to determine. You then only need to remember > which way round to fit them. > > - Jonathan Morton > _______________________________________________ > Cerowrt-devel mailing list > Cerowrt-devel@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/cerowrt-devel > --00000000000072ed3d05bddbfcc7 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
As they're white LEDs, voltage (well, the current-limi= ting resistor used) will probably matter (different color LEDs tend to take= different voltages/currents for the same brightness)

On Tue, Mar 16, 2021= at 8:06 PM Jonathan Morton <ch= romatix99@gmail.com> wrote:
> On 17 Mar= , 2021, at 3:24 am, Valdis Kl=C4=93tnieks <valdis.kletnieks@vt.edu> wrote:
>
> Apparently, replacing them isn't *that* hard, but some of the
> details are sketchy.=C2=A0 In particular, does anybody know what part = number
> is a suitable replacement?

What you need to determine is the package form/size and the LED colour.=C2= =A0 Probably even the latter is not critical.=C2=A0 Then you can obtain rep= lacements through any electronic component dealer.

Through-hole LEDs will be described by their optical housing dimensions.=C2= =A0 Circular ones are typical, so measure the diameter.=C2=A0 Then check wh= ether the top surface is hemispherical or flat.

Small surface-mount indicator LEDs (not the larger ones used for lighting a= pplications) will usually be described by a four-digit package code that is= common to resistors etc, and simply describes their width and length.=C2= =A0 This shouldn't be too hard to determine.=C2=A0 You then only need t= o remember which way round to fit them.

=C2=A0- Jonathan Morton
_______________________________________________
Cerowrt-devel mailing list
Ce= rowrt-devel@lists.bufferbloat.net
https://lists.bufferbloat.net/listinfo/cerowrt-d= evel
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