{"id":16439,"date":"2021-03-07T13:07:04","date_gmt":"2021-03-07T12:07:04","guid":{"rendered":"http:\/\/blog.wenzlaff.de\/?p=16439"},"modified":"2021-04-18T09:19:18","modified_gmt":"2021-04-18T07:19:18","slug":"bitcoin-adressen-und-text-in-qr-code-schnell-mit-nodered-erzeugen","status":"publish","type":"post","link":"http:\/\/blog.wenzlaff.de\/?p=16439","title":{"rendered":"Bitcoin Adressen und Text in QR-Code schnell mit NodeRed erzeugen"},"content":{"rendered":"

Heute gehts mal kurz um die QR-Code Erzeugung wie z.B. dieser:<\/p>\n

\"\"<\/a><\/p>\n

Manchmal braucht man z.B. einen QR-Code f\u00fcr die Bitcoin-Adresse. Wie z.B. By my a coffee: bitcoin:bc1qj4grttyhk2h5wqask3nku70e3qtycssz5kvw5l<\/strong> wird dann so erzeugt, und geht auf mein echtes Konto \ud83d\ude09 …<\/p>\n

\"\"<\/a><\/p>\n

Oder auch anderen Text. Daf\u00fcr habe ich diese NodeRed Node in JavaScript geschrieben.<\/p>\n

Der QR-Code kann nun mit diesem NodeRed Flow einfach erzeugt werden. Es braucht nur der Dateiname und Pfad und optional ein Prefix angegeben werden. Das ist schon alles. Der Flow ist schnell installiert:<\/p>\n

npm install node-red-contrib-cryptography-qr-code<\/strong><\/p>\n

Oder \u00fcber die Paletten-Installation von NodeRed. Hier der Beispiel Flow:<\/p>\n

\"\"<\/a><\/p>\n

Hier der Code, f\u00fcr den Import <\/p>\n

[ { \"id\": \"15f97750.9f15d1\", \"type\": \"inject\", \"z\": \"fa6c893a.ae8d8\", \"name\": \"Start\", \"props\": [ { \"p\": \"payload\" }, { \"p\": \"topic\", \"vt\": \"str\" } ], \"repeat\": \"\", \"crontab\": \"\", \"once\": false, \"onceDelay\": 0.1, \"topic\": \"bc1qj4grttyhk2h5wqask3nku70e3qtycssz5kvw5l\", \"payload\": \"www.wenzlaff.de\", \"payloadType\": \"str\", \"x\": 230, \"y\": 220, \"wires\": [ [ \"c36f4049.b9248\" ] ] }, { \"id\": \"4d0b1987.f7a86\", \"type\": \"debug\", \"z\": \"fa6c893a.ae8d8\", \"name\": \"Ergebnis\", \"active\": true, \"tosidebar\": true, \"console\": false, \"tostatus\": false, \"complete\": \"payload\", \"targetType\": \"msg\", \"statusVal\": \"\", \"statusType\": \"auto\", \"x\": 780, \"y\": 220, \"wires\": [] }, { \"id\": \"ed289c05.b34a7\", \"type\": \"comment\", \"z\": \"fa6c893a.ae8d8\", \"name\": \"(c) 2021 Thomas Wenzlaff www.wenzlaff.info\", \"info\": \"Verwendeter Node: node-red-contrib-miio-roborock\", \"x\": 690, \"y\": 140, \"wires\": [] }, { \"id\": \"987d0461.3a3738\", \"type\": \"comment\", \"z\": \"fa6c893a.ae8d8\", \"name\": \"Create simple QR-Code\", \"info\": \"\", \"x\": 260, \"y\": 140, \"wires\": [] }, { \"id\": \"c36f4049.b9248\", \"type\": \"cryptoqrcode\", \"z\": \"fa6c893a.ae8d8\", \"name\": \"\", \"filename\": \"\/data\/wenzlaff-address-qr-code.png\", \"prefix\": \"\", \"x\": 470, \"y\": 220, \"wires\": [ [ \"4d0b1987.f7a86\" ] ] } ]<\/pre>\n","protected":false},"excerpt":{"rendered":"
QR-Code erzeugung mit NodeRed<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[3,4606,852,3137,2520,79,1023],"tags":[428,4740,4739,4670,4812,3748,2516,2475,2824,555,4113],"class_list":["post-16439","post","type-post","status-publish","format-standard","hentry","category-allgemein","category-crypto","category-heimautomatisierung","category-javascript","category-node-red","category-programmierung","category-raspberry-pi","tag-barcode","tag-bitcoin-addresse","tag-bitcoin-adresse","tag-bitcoin-adresse-zu-qr-code","tag-buy-me-a-coffee","tag-erzeugen","tag-flow","tag-node","tag-nodered","tag-qr-code","tag-qrcode"],"_links":{"self":[{"href":"http:\/\/blog.wenzlaff.de\/index.php?rest_route=\/wp\/v2\/posts\/16439","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/blog.wenzlaff.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.wenzlaff.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.wenzlaff.de\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.wenzlaff.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=16439"}],"version-history":[{"count":0,"href":"http:\/\/blog.wenzlaff.de\/index.php?rest_route=\/wp\/v2\/posts\/16439\/revisions"}],"wp:attachment":[{"href":"http:\/\/blog.wenzlaff.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=16439"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.wenzlaff.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16439"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.wenzlaff.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}