X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com Date: Fri, 15 Jun 2012 10:08:39 -0700 From: Colin D Bennett To: geda-user AT delorie DOT com Subject: Re: [geda-user] data matrix on PCB Message-ID: <20120615100839.0f6fff48@svelte> In-Reply-To: <20120615183503.0ae38e62@jive.levalinux.org> References: <20120615183503 DOT 0ae38e62 AT jive DOT levalinux DOT org> X-Mailer: Claws Mail 3.8.0 (GTK+ 2.24.10; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator297.hostgator.com X-AntiAbuse: Original Domain - delorie.com X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - gibibit.com X-BWhitelist: no X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (svelte) [67.160.113.82]:48114 X-Source-Auth: colin AT gibibit DOT com X-Email-Count: 1 X-Source-Cap: c2t5bGVuO3NreWxlbjtnYXRvcjI5Ny5ob3N0Z2F0b3IuY29t Reply-To: geda-user AT delorie DOT com Errors-To: nobody AT delorie DOT com X-Mailing-List: geda-user AT delorie DOT com X-Unsubscribes-To: listserv AT delorie DOT com Precedence: bulk On Fri, 15 Jun 2012 18:35:03 +0200 Levente Kovacs wrote: > Hi list, > > > This is my first PCB layout with a data matrix on it. Is the matrix code going to be readable if its only a pattern in the copper under solder mask? I would think that either (a) silk screen or (b) bare copper contrasting with bare FR4 (remove the mask on that region) would be a better option. Regards, Colin