{"id":548,"date":"2017-01-12T22:33:36","date_gmt":"2017-01-12T20:33:36","guid":{"rendered":"https:\/\/burakcaliskan.org\/blog\/?p=548"},"modified":"2017-01-12T22:34:45","modified_gmt":"2017-01-12T20:34:45","slug":"esp8266-buzzer","status":"publish","type":"post","link":"https:\/\/burakcaliskan.org\/blog\/esp8266-buzzer\/","title":{"rendered":"ESP8266 buzzer"},"content":{"rendered":"<p><a href=\"https:\/\/burakcaliskan.org\/blog\/depo\/2017\/01\/buzzer.jpg\"><img loading=\"lazy\" class=\"alignnone size-full wp-image-549\" src=\"https:\/\/burakcaliskan.org\/blog\/depo\/2017\/01\/buzzer.jpg\" alt=\"\" width=\"208\" height=\"208\" srcset=\"https:\/\/burakcaliskan.org\/blog\/depo\/2017\/01\/buzzer.jpg 208w, https:\/\/burakcaliskan.org\/blog\/depo\/2017\/01\/buzzer-150x150.jpg 150w\" sizes=\"(max-width: 208px) 100vw, 208px\" \/><\/a><\/p>\n<p>buzzerPin = 7<br \/>\ngpio.mode(buzzerPin, gpio.OUTPUT)<\/p>\n<p>tones = {}<\/p>\n<p>tones[&#8220;aS&#8221;] = 880<br \/>\ntones[&#8220;cS&#8221;] = 523<br \/>\ntones[&#8220;eS&#8221;] = 659<\/p>\n<p>function beep(pin, tone, duration)<br \/>\nlocal freq = tones[tone]<br \/>\nprint (&#8220;Frequency:&#8221; .. freq)<br \/>\npwm.setup(pin, freq, 512)<br \/>\npwm.start(pin)<br \/>\n&#8212; delay in uSeconds<br \/>\ntmr.delay(duration * 1000)<br \/>\npwm.stop(pin)<br \/>\n&#8211;20ms pause<br \/>\ntmr.wdclr()<br \/>\ntmr.delay(20000)<br \/>\nend<\/p>\n<p>function play()<br \/>\nbeep(buzzerPin, &#8220;cS&#8221;, 100)<br \/>\nbeep(buzzerPin, &#8220;eS&#8221;, 100)<br \/>\nbeep(buzzerPin, &#8220;aS&#8221;, 100)<br \/>\nend<\/p>\n<p>tmr.alarm(0, 3000, 1, function() play() end )<\/p>\n","protected":false},"excerpt":{"rendered":"<p>buzzerPin = 7 gpio.mode(buzzerPin, gpio.OUTPUT) tones = {} tones[&#8220;aS&#8221;] = 880 tones[&#8220;cS&#8221;] = 523 tones[&#8220;eS&#8221;] = 659 function beep(pin, tone, duration) local freq = tones[tone] print (&#8220;Frequency:&#8221; .. freq) pwm.setup(pin, freq, 512) pwm.start(pin) &#8212; delay in uSeconds tmr.delay(duration * 1000) pwm.stop(pin) &#8211;20ms pause tmr.wdclr() tmr.delay(20000) end function play() beep(buzzerPin, &#8220;cS&#8221;, 100) beep(buzzerPin, &#8220;eS&#8221;, 100) beep(buzzerPin, [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":551,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[179],"tags":[347,167,348],"_links":{"self":[{"href":"https:\/\/burakcaliskan.org\/blog\/wp-json\/wp\/v2\/posts\/548"}],"collection":[{"href":"https:\/\/burakcaliskan.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/burakcaliskan.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/burakcaliskan.org\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/burakcaliskan.org\/blog\/wp-json\/wp\/v2\/comments?post=548"}],"version-history":[{"count":2,"href":"https:\/\/burakcaliskan.org\/blog\/wp-json\/wp\/v2\/posts\/548\/revisions"}],"predecessor-version":[{"id":552,"href":"https:\/\/burakcaliskan.org\/blog\/wp-json\/wp\/v2\/posts\/548\/revisions\/552"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/burakcaliskan.org\/blog\/wp-json\/wp\/v2\/media\/551"}],"wp:attachment":[{"href":"https:\/\/burakcaliskan.org\/blog\/wp-json\/wp\/v2\/media?parent=548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/burakcaliskan.org\/blog\/wp-json\/wp\/v2\/categories?post=548"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/burakcaliskan.org\/blog\/wp-json\/wp\/v2\/tags?post=548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}