{"id":12808,"date":"2016-12-09T20:12:57","date_gmt":"2016-12-10T01:12:57","guid":{"rendered":"http:\/\/embedded-lab.com\/blog\/?p=12808"},"modified":"2016-12-09T20:12:57","modified_gmt":"2016-12-10T01:12:57","slug":"another-minimalist-wrist-watch-binary-display","status":"publish","type":"post","link":"https:\/\/embedded-lab.com\/blog\/another-minimalist-wrist-watch-binary-display\/","title":{"rendered":"Another minimalist wrist watch, but with binary display"},"content":{"rendered":"<p>Earlier\u00a0this week, we saw David Johnson-Davies\u2019 <a href=\"http:\/\/www.technoblogy.com\/show?KVM\" target=\"_blank\">minimalist\u00a0ATtiny85 wrist watch<\/a>\u00a0that displays time using 12 LEDs arranged in a circle like a watch dial. I found another interesting\u00a0<strong><a href=\"https:\/\/github.com\/MacroFab\/Macro_Watch\" target=\"_blank\">LED-based wrist watch<\/a><\/strong>\u00a0design shared by MACROFAB. It is a low cost watch based on Microchip PIC16F527 and it displays time in binary format. The PIC microcontroller runs in low-power crystal mode using a\u00a032.768 KHz external crystal, that helps to achieve an accurate 1Hz signal required for timekeeping.<\/p>\n<div id=\"attachment_12809\" style=\"width: 766px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2016\/12\/watch.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12809\" class=\"size-full wp-image-12809\" src=\"http:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2016\/12\/watch.png\" alt=\"Wrist watch with binary display\" width=\"756\" height=\"716\" srcset=\"https:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2016\/12\/watch.png 756w, https:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2016\/12\/watch-580x549.png 580w\" sizes=\"auto, (max-width: 756px) 100vw, 756px\" \/><\/a><p id=\"caption-attachment-12809\" class=\"wp-caption-text\">Wrist watch with binary display<\/p><\/div>\n<blockquote><p>The Macro_Watch has 11 LEDs. Four LEDs for the Hour (H1 &#8211; H4), Six LEDs for the Minute (M1 &#8211; M6), and a single Seconds LED for timing purposes. This guide will not go into how to read binary but a good guide can be found here. Pressing the switch on the front will lit up the LEDs for 10 seconds to allow reading of the time. Holding the switch for 3 seconds will allow setting the current time. The time advances with acceleration so the longer the button is pressed the faster the time will increase. There is no AM\/PM indicator on the watch. The SEC LED can be repurposed for AM\/PM use or the user can look outside and see if the sun is out.<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Earlier\u00a0this week, we saw David Johnson-Davies\u2019 minimalist\u00a0ATtiny85 wrist watch\u00a0that displays time using 12 LEDs arranged in a circle like a watch dial. I found another interesting\u00a0LED-based wrist watch\u00a0design shared by MACROFAB. It is a low cost watch based on Microchip PIC16F527 and it displays time in binary format. The PIC microcontroller runs in low-power crystal mode using a\u00a032.768 KHz external crystal, that helps to achieve an accurate 1Hz signal required for timekeeping. The Macro_Watch has 11 LEDs. Four LEDs for the Hour (H1 &#8211; H4), Six LEDs for the Minute (M1 &#8211; M6), and a single Seconds LED for timing<\/p>\n","protected":false},"author":1,"featured_media":12809,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[1586,527],"class_list":["post-12808","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pic-projects","tag-binary-wrist-watch","tag-pic-project"],"_links":{"self":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts\/12808","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/comments?post=12808"}],"version-history":[{"count":2,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts\/12808\/revisions"}],"predecessor-version":[{"id":12811,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts\/12808\/revisions\/12811"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/media\/12809"}],"wp:attachment":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/media?parent=12808"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/categories?post=12808"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/tags?post=12808"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}