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Sender: "piclist-bounces@mit.edu" Date: Mon, 22 Feb 2021 18:26:17 -0800 Subject: Re: [EE] Measuring PCB copper weight? Thread-Topic: [EE] Measuring PCB copper weight? Thread-Index: AdcJjLo8VXwIxVsMSAq3ttwULGC4PA== Message-ID: <2d51d7bc-a61a-b0df-3a71-f6d8a4fb71cf@celestialaudio.com> References: <1811845610.2321454.1612406333236@mail.yahoo.com> List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: <1811845610.2321454.1612406333236@mail.yahoo.com> Reply-To: Microcontroller discussion list - Public. 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mit.edu; dkim=none (message not signed) header.d=none; mit.edu; dmarc=none action=none header.from=celestialaudio.com; user-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Firefox/60.0 SeaMonkey/2.53.5.1 errors-to: piclist-bounces@mit.edu list-id: "Microcontroller discussion list - Public." list-post: x-beenthere: piclist@mit.edu x-mailman-version: 2.1.6 x-topics: [EE] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 SnVzdCBhIG1pbm9yIExPTC9TaWdoLCBJIGdvdCBzb21lIGJvYXJkcyBtYWRlIGF0IEpMQ1BjYiwg dGhleSBoYXZlIHRyYWNlIAphbnRlbm5hcyBmb3IgUkZJRCwgYSA1NW1tIHNwaXJhbCBzcXVhcmUg b2YgNm1pbCB3aWRlIHRyYWNrLiAgSSB3YXMgCmhhdmluZyBwcm9ibGVtcyBub3Qgc2VlbiBvbiBh IHByb3RvIHBjYiBtYWRlIGluIHRoZSBVU0EuICBBZnRlciBzb21lIApoZWFkIHNjcmF0Y2hpbmcg YW5kIGZpZGRsaW5nIGFuZCBjYWxjdWxhdGluZywgdGhlIHRyYWNlIGFudGVubmEgaXMgMzgwIApp bmNoZXMgbG9uZywgYW5kIHdpdGggMSBPeiBjb3BwZXIgaXQgbWVhc3VyZWQgY2xvc2UgdG8gMzAg T2htcywgYXMgCmV4cGVjdGVkLCBvbiB0aGUgcHJvdG8uICBUaGUgcGNiIGZyb20gSkxDUGNiIGlz IDQ0IE9obXMsIGkuZS4gMzAlIGxlc3MgCmNvcHBlciB0aGFuIHRoZSBzdGFuZGFyZCBmb3IgMSBP ei4KCk5ldmVyIHNlZW4gdGhhdCBiZWZvcmUuCgpOb3cgdGhleSB3YW50IG1lIHRvIG1lYXN1cmUg dGhlIHRoaWNrbmVzcy4gIFlhIHJpZ2h0LgoKSgoKCkRtaXRyaXkgS2lyeWFzaG92IHdyb3RlOgo+ ICAgMm5kIG9uIHRoaXMgYXBwcm9hY2ggYXMgbW9zdCBwcmFjdGljYWwgYW5kIGxlYXN0IG1lc3N5 Lgo+IAo+IFVzaW5nIDR4IHdpcmVzIERNTSB3aXRoIHVuZGVyIDIgbU9obSAicmVzaWR1YWwiIHJl c2lzdGFuY2UgbGVmdCBhbmQga25vd2luZyB0cmFjZSB3aWR0aCB3aWxsIGFsbG93IHRvIHJldmVy c2UgY2FsY3VsYXRlIGNvcHBlciB0aGlja25lc3MgcXVpY2tseS4KPiAKPiBZb3Ugd2lsbCBvbmx5 IG5lZWQgdG8gY2FyZWZ1bGx5IHJlbW92ZSAvIHNjcmF0Y2ggb2ZmIGluc3VsYXRpb24gZnJvbSBj b3VwbGUgb2Ygc3BvdCBhYm92ZSB0aGF0IGNvcHBlciB0cmFjZSBpbiBxdWVzdGlvbiBhdCBzb21l IGRpc3RhbmNlIGZyb20gZWFjaCBvdGhlcgo+ICggc28geW91IHRvdGFsIG1lYXN1cmVkIHRyYWNl IHJlc2lzdGFuY2Ugd2lsbCBiZSBhYm92ZSAyMCBtT2htIGF0IGxlYXN0ICkKPiAKPiAgICAgICBP biBXZWRuZXNkYXksIEZlYnJ1YXJ5IDMsIDIwMjEsIDA5OjE0OjE2IEFNIFBTVCwgU3BlaHJvIFBl ZmhhbnkgPHNwZWZmQGludGVybG9nLmNvbT4gd3JvdGU6Cj4gICAKPiAgIE1lYXN1cmUgdGhlIHJl c2lzdGFuY2Ugb2YgYSBrbm93biB3aWR0aC9sZW5ndGggdHJhY2U/Cj4gCj4gSWYgeW91IGRvbuKA mXQgaGF2ZSBhIDQtd2lyZSBvaG1tZXRlciwgcHV0IGEga25vd24gZmFpcmx5IGxhcmdlIChidXQg bm90IGxhcmdlIGVub3VnaCB0byBjYXVzZSB0b28gbXVjaCBoZWF0aW5nIHRvbyBxdWlja2x5KSBj dXJyZW50IHRocm91Z2ggdGhlIHRyYWNlIGFuZCBtZWFzdXJlIHRoZSBtViBkcm9wIGlud2FyZHMg b2Ygd2hlcmUgdGhlIGN1cnJlbnQgaXMgaW5qZWN0ZWQuCj4gCj4gQmVzdCByZWdhcmRzLCBTUAo+ IAo+PiBPbiBGZWIgMywgMjAyMSwgYXQgMTI6MDAgUE0sIENsaW50IEpheSA8Y2pheXNoYXJwQGdt YWlsLmNvbT4gd3JvdGU6Cj4+Cj4+IO+7v01pY3JvbWV0ZXI/IFRoZSB0aGlja25lc3Mgb2YgdGhl IGNvcHBlciBzaG91bGQgYmUgYSBnaXZlYXdheQo+Pgo+Pj4gT24gV2VkLCAzIEZlYiAyMDIxLCAx NjowMSBOZWlsLCA8cGljZHVkZTNAbmFyd2FuaS5vcmc+IHdyb3RlOgo+Pj4KPj4+IElzIHRoZXJl IGEgc2ltcGxpc2ggd2F5IHRvIGZpZ3VyZSBvdXQgb3IgbWVhc3VyZSB0aGUgY29wcGVyIHdlaWdo dCBvbiBhbgo+Pj4gZXhpc3RpbmcgUENCPwo+Pj4KPj4+IEknbSBhc2tpbmcgYmVjYXVzZSBJJ20g cmVkb2luZyBhIGxheW91dCBmb3Igc29tZW9uZSBhbmQgSSBkaWQgbm90IGRvIHRoZQo+Pj4gb3Jp Z2luYWwgY2lyY3VpdCBkZXNpZ24sIHNvIHdhcyBwbGFubmluZyB0byB1c2UgdGhlIHNhbWUgdHJh Y2Ugd2lkdGhzIGFzCj4+PiBvbiB0aGUgb3JpZ2luYWwgYm9hcmQsIGJ1dCBJJ2xsIG5lZWQgdG8g a25vdyB0aGUgY29wcGVyIHdlaWdodCB0byBvcmRlcgo+Pj4gYSBwcm90b3R5cGUgYm9hcmQuCj4+ PiBJZiBJIGhhdmUgdG8gcmVkbyB0aGUgbWF0aCBvbiBjdXJyZW50IGV0YywgdGhhdCBvcGVucyB1 cCBhbm90aGVyIGNhbiBvZgo+Pj4gd29ybXMgYXMgSSBkb24ndCBoYXZlIGFsbCBvZiB0aGUgc3Bl Y3Mgb3RoZXJ3aXNlLgo+Pj4gQW5kIHRoZSBjb3BwZXIgZG9lcyBmZWVsIHRoaWNrZXIgdGhhbiB1 c3VhbC4KPj4+Cj4+PiBUaGFua3MuCj4+Pgo+Pj4KPj4+Cj4+Pgo+Pj4gLS0KPj4+IGh0dHA6Ly93 d3cucGljbGlzdC5jb20vdGVjaHJlZi9waWNsaXN0IFBJQy9TWCBGQVEgJiBsaXN0IGFyY2hpdmUK Pj4+IFZpZXcvY2hhbmdlIHlvdXIgbWVtYmVyc2hpcCBvcHRpb25zIGF0Cj4+PiBodHRwOi8vbWFp bG1hbi5taXQuZWR1L21haWxtYW4vbGlzdGluZm8vcGljbGlzdAo+Pj4KPj4gLS0gCj4+IGh0dHA6 Ly93d3cucGljbGlzdC5jb20vdGVjaHJlZi9waWNsaXN0IFBJQy9TWCBGQVEgJiBsaXN0IGFyY2hp dmUKPj4gVmlldy9jaGFuZ2UgeW91ciBtZW1iZXJzaGlwIG9wdGlvbnMgYXQKPj4gaHR0cDovL21h aWxtYW4ubWl0LmVkdS9tYWlsbWFuL2xpc3RpbmZvL3BpY2xpc3QKPiAKPiAKLS0gCmh0dHA6Ly93 d3cucGljbGlzdC5jb20vdGVjaHJlZi9waWNsaXN0IFBJQy9TWCBGQVEgJiBsaXN0IGFyY2hpdmUK Vmlldy9jaGFuZ2UgeW91ciBtZW1iZXJzaGlwIG9wdGlvbnMgYXQKaHR0cDovL21haWxtYW4ubWl0 LmVkdS9tYWlsbWFuL2xpc3RpbmZvL3BpY2xpc3QK .