{"id":2537,"date":"2022-06-27T13:28:54","date_gmt":"2022-06-27T13:28:54","guid":{"rendered":"https:\/\/picockpit.com\/raspberry-pi\/?p=2537"},"modified":"2023-08-28T11:48:10","modified_gmt":"2023-08-28T11:48:10","slug":"raspberry-pi-project-ideas-e-ink-calendar-clock","status":"publish","type":"post","link":"https:\/\/picockpit.com\/raspberry-pi\/pt\/framboesa-pi-project-ideas-e-ink-calendar-clock\/","title":{"rendered":"Ideias para projectos Raspberry Pi: calend\u00e1rio e rel\u00f3gio com tinta eletr\u00f3nica"},"content":{"rendered":"<p>Hoje, vamos dar uma vista de olhos a dois projectos Raspberry Pi realmente brilhantes - um calend\u00e1rio e um rel\u00f3gio e-ink!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Calend\u00e1rio de papel electr\u00f3nico<\/h2>\n\n\n\n<iframe loading=\"lazy\" id=\"reddit-embed\" src=\"https:\/\/www.redditmedia.com\/r\/raspberry_pi\/comments\/v4ub12\/epaper_calendar_using_rpi_zero_w_caldav_support\/?ref_source=embed&amp;ref=share&amp;embed=true\" sandbox=\"allow-scripts allow-same-origin allow-popups\" style=\"border: none;\" height=\"620\" width=\"640\" scrolling=\"no\"><\/iframe>\n\n\n\n<p>O utilizador Reddit Beaverknighterino disse que estava \"fascinado com projectos de E-paper, por isso decidi finalmente fazer um para o meu calend\u00e1rio de trabalho\".<\/p>\n\n\n\n<p>Os materiais utilizados pelo Beaverknighterino s\u00e3o como tal:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Waveshare 7.5\" B\/W 800\u00d7480 E-paper<\/li>\n\n\n\n<li>Raspberry Pi Zero W<\/li>\n\n\n\n<li>Xiaomi 10000mAH Banco de energia<\/li>\n\n\n\n<li>IKEA HOVSTA Moldura fotogr\u00e1fica<\/li>\n<\/ol>\n\n\n\n<p>Beaverknighterino mencionou que o projeto se tornou um pouco mais dif\u00edcil. Isto deve-se ao facto de o calend\u00e1rio de trabalho utilizar o CalDAV e de muitas bibliotecas de c\u00f3digo aberto suportarem apenas o Google ou o iCloud.<\/p>\n\n\n\n<p>Atualmente, o sistema s\u00f3 tem menos de cinco dias de autonomia da bateria antes de se desligar. <\/p>\n\n\n\n<p>No entanto, isto \u00e9 tamb\u00e9m o resultado de um c\u00f3digo n\u00e3o optimizado, que Beaverknighterino diz que ser\u00e1 alvo de melhorias na pr\u00f3xima itera\u00e7\u00e3o.<\/p>\n\n\n\n<p>Os ecr\u00e3s de tinta eletr\u00f3nica s\u00e3o muito eficientes em termos energ\u00e9ticos porque a maior parte do consumo de energia ocorre quando se actualiza o ecr\u00e3 com novos conte\u00fados. Uma vez definido o conte\u00fado, o consumo de energia cai para zero.<\/p>\n\n\n\n<p>A quest\u00e3o aqui \u00e9 que o Pi Zero W \u00e9 mantido em funcionamento a fim de actualizar a exposi\u00e7\u00e3o ap\u00f3s cada marca\u00e7\u00e3o de reuni\u00e3o e \u00e0 meia-noite. <\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>CLIQUE AQUI: <a href=\"https:\/\/picockpit.com\/raspberry-pi\/wp-admin\/post.php?post=1583&amp;action=edit\">Dicas e truques de optimiza\u00e7\u00e3o de pot\u00eancia Raspberry Pi Zero 2<\/a><\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Rel\u00f3gio e-Ink<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/preview.redd.it\/3h5waithq5791.jpg?width=640&amp;crop=smart&amp;auto=webp&amp;s=a62ba4c49ff86bce898a94be6e9af8064b2b6dbc\" alt=\"\" style=\"width:419px;height:555px\" width=\"419\" height=\"555\"\/><figcaption class=\"wp-element-caption\">Waveshare 2.13\u2033 e-Ink display mostrando um rel\u00f3gio e data . <a href=\"https:\/\/www.reddit.com\/r\/raspberry_pi\/comments\/vi2xow\/i_made_a_basic_clock_with_a_pi_zero_and_an_eink\/\" rel=\"nofollow\">Foto de u\/tttpp \/ reddit<\/a><\/figcaption><\/figure>\n<\/div>\n\n\n<p>Aqui est\u00e1 outro projecto que utiliza o Raspberry Pi Zero.<\/p>\n\n\n\n<p>Ao contr\u00e1rio do calend\u00e1rio acima que \u00e9 alimentado por uma bateria, este \u00e9 alimentado por USB, pelo que n\u00e3o h\u00e1 problema com a dura\u00e7\u00e3o da bateria.<\/p>\n\n\n\n<p>A discuss\u00e3o em torno do rel\u00f3gio \u00e9 provavelmente a mais interessante. Uma quest\u00e3o pertinente \u00e9 se um visor e-ink \u00e9 capaz de mostrar segundos. Aqui est\u00e1 um v\u00eddeo importante:<\/p>\n\n\n\n<div style=\"width: 100%; height: 0px; position: relative; padding-bottom: 177.778%;\"><iframe loading=\"lazy\" src=\"https:\/\/streamable.com\/e\/qevfjr\" frameborder=\"0\" width=\"100%\" height=\"100%\" allowfullscreen=\"\" style=\"width: 100%; height: 100%; position: absolute;\"><\/iframe><\/div>\n\n\n\n<p>Inerente \u00e0 fraqueza de um ecr\u00e3 de tinta eletr\u00f3nica est\u00e1 o seu tempo de atualiza\u00e7\u00e3o de um segundo. Isto torna-o muito perturbador se tiver de o atualizar a cada segundo e pode n\u00e3o ser prop\u00edcio. <\/p>\n\n\n\n<p>Mas esse \u00e9 o pre\u00e7o de um ecr\u00e3 ultra-eficiente.<\/p>\n\n\n\n<p>Outra discuss\u00e3o interessante \u00e9 se o Raspberry Pi Pico seria ou n\u00e3o um bom substituto para o Pi Zero. Especialmente tendo em conta que \u00e9 mais barato e muito mais f\u00e1cil de encontrar em stock.<\/p>\n\n\n\n<p>A conclus\u00e3o foi que, sim, era poss\u00edvel... mas...<\/p>\n\n\n\n<p>Mas o problema \u00e9 que o Pico n\u00e3o tem as mesmas caracter\u00edsticas do Pi Zero. <\/p>\n\n\n\n<p>Assim, ser\u00e1 necess\u00e1rio acrescentar alguns m\u00f3dulos - <a href=\"https:\/\/buyzero.de\/products\/mini-rtc-module-for-raspberry-pi\">ou um m\u00f3dulo de rel\u00f3gio em tempo real<\/a> ou algo que lhe d\u00ea acesso \u00e0 Internet.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/06\/image-17.png\" alt=\"\" class=\"wp-image-2541\" style=\"width:442px;height:397px\" width=\"442\" height=\"397\" srcset=\"https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/06\/image-17.png 500w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/06\/image-17-300x269.png 300w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/06\/image-17-13x12.png 13w\" sizes=\"auto, (max-width: 442px) 100vw, 442px\" \/><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/buyzero.de\/products\/mini-rtc-module-for-raspberry-pi\">Um mini m\u00f3dulo RTC para o Raspberry Pi, dispon\u00edvel a partir deste link.<\/a><\/figcaption><\/figure>\n<\/div>\n\n\n<p>N\u00e3o que o Pi Zero tenha um rel\u00f3gio em tempo real a bordo, mas pelo menos obt\u00e9m-se WiFi (com a variante Zero W). Portanto, na sua ess\u00eancia, o Zero \u00e9 exagerado, mas \u00e9 conveniente.<\/p>\n\n\n\n<p>u\/tttpp partilhou o seu <a href=\"https:\/\/pastebin.com\/VwYQcFD3\">c\u00f3digo<\/a> e <a href=\"https:\/\/www.reddit.com\/user\/tttpp\/\" rel=\"nofollow\">instru\u00e7\u00f5es<\/a> para o Waveshare 2.13\u2033 exibir v2:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Instalar pi lite sem GUI<\/li>\n\n\n\n<li>Instalar python3 e tmux sobre ele usando SSH<\/li>\n\n\n\n<li>Siga todas as instru\u00e7\u00f5es de\u00a0<a href=\"https:\/\/www.waveshare.com\/wiki\/2.13inch_e-Paper_HAT\" target=\"_blank\" rel=\"noreferrer noopener\">aqui para instalar as bibliotecas e exemplos<\/a>\u00a0para configurar o ecr\u00e3 e-ink<\/li>\n\n\n\n<li>Crie uma nova pasta na pasta que descarregou do waveshare (onde est\u00e3o as pastas da lib, exemplos, etc.) e copie o meu&nbsp;<a href=\"https:\/\/pastebin.com\/VwYQcFD3\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00f3digo<\/a>&nbsp;ali<\/li>\n\n\n\n<li>Criar uma sess\u00e3o de tmux para que o gui\u00e3o possa correr indefinidamente em segundo plano e iniciar com python3 (caminho para o c\u00f3digo) e sair da sess\u00e3o de tmux<\/li>\n<\/ul>\n\n\n\n<p>Nota: este c\u00f3digo \u00e9 espec\u00edfico para um ecr\u00e3 Waveshare de 2,13 polegadas V2. \u00c9 muito f\u00e1cil alternar entre vers\u00f5es, basta executar cada exemplo at\u00e9 que um funcione (com a mesma resolu\u00e7\u00e3o que o e-ink que tem). Em breve farei um tutorial adequado e limparei o c\u00f3digo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Tem um projecto interessante?<\/h2>\n\n\n\n<p>Pode ver mais projectos como este na nossa s\u00e9rie Paragon Projects <a href=\"https:\/\/picockpit.com\/raspberry-pi\/category\/paragon-projects\/\">aqui<\/a>.<\/p>\n\n\n\n<p>Se tem conhecimento de um projecto interessante, deixe um coment\u00e1rio abaixo \ud83d\udc47<\/p>\n\n\n\n<p>Se gostar desta s\u00e9rie, subscreva a nossa newsletter abaixo \ud83d\udc47<\/p>\n<div class=\"shariff shariff-align-center shariff-widget-align-left shariff-buttonstretch\"><ul class=\"shariff-buttons theme-white orientation-horizontal buttonsize-medium\"><li class=\"shariff-button twitter shariff-nocustomcolor\" style=\"background-color:#595959\"><a href=\"https:\/\/twitter.com\/share?url=https%3A%2F%2Fpicockpit.com%2Fraspberry-pi%2Fpt%2Fframboesa-pi-project-ideas-e-ink-calendar-clock%2F&text=Raspberry%20Pi%20project%20ideas%3A%20e-ink%20calendar%20and%20clock\" title=\"Compartilhar no X\" aria-label=\"Compartilhar no X\" role=\"button\" rel=\"noopener nofollow\" class=\"shariff-link\" style=\"; 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Calend\u00e1rio de papel eletr\u00f3nico O utilizador do Reddit Beaverknighterino disse que estava \"fascinado com projectos de papel eletr\u00f3nico, por isso decidi finalmente fazer um para o meu calend\u00e1rio de trabalho\". Os materiais que Beaverknighterino utilizou s\u00e3o os seguintes: Beaverknighterino mencionou que o projeto...<\/p>","protected":false},"author":2,"featured_media":2544,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[220],"tags":[621,620,623,486,447,187,538,622],"class_list":["post-2537","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-raspberry-pi-projects","tag-e-ink-clock","tag-e-paper-calendar","tag-pi-projects","tag-project","tag-projects","tag-raspberry-pi","tag-raspberry-pi-zero","tag-waveshare-2-13-inch-display-v2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Raspberry Pi project ideas: e-ink calendar and clock | PiCockpit<\/title>\n<meta name=\"description\" content=\"Raspberry Pi projects including e-ink clock and e-paper calendar.\" \/>\n<meta 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