{"id":6164,"date":"2022-08-08T11:08:48","date_gmt":"2022-08-08T14:08:48","guid":{"rendered":"https:\/\/www.usinainfo.com.br\/blog\/?p=6164"},"modified":"2023-09-01T11:58:28","modified_gmt":"2023-09-01T14:58:28","slug":"projeto-sensor-jsn-sr04t-2-0-aj-sr04m-comunicacao-com-arduino","status":"publish","type":"post","link":"https:\/\/www.usinainfo.com.br\/blog\/projeto-sensor-jsn-sr04t-2-0-aj-sr04m-comunicacao-com-arduino\/","title":{"rendered":"Projeto Sensor JSN-SR04T 2.0 \/ AJ-SR04M Comunica\u00e7\u00e3o com Arduino"},"content":{"rendered":"<h2 class=\"title entry-title\"><span style=\"color: #000000;\">Como comunicar o sensor ultrass\u00f4nico \u00e0 prova d&#8217;\u00e1gua JSN-SR04T com Arduino?<\/span><\/h2>\n<p><span style=\"color: #000000;\">\u00c0 medida que os sensores ultrass\u00f4nicos come\u00e7aram a ser usados \u200b\u200bem carros como sensores de estacionamento reverso, os fabricantes come\u00e7aram a produzi-los em grande escala, o que os tornou facilmente dispon\u00edveis em uma ampla variedade de modelos a pre\u00e7os mais em conta. Entre eles, o <span class=\"has-inline-color has-black-color\"><span style=\"text-decoration: underline;\"><a style=\"color: #000000; text-decoration: underline;\" href=\"https:\/\/www.usinainfo.com.br\/sensor-ultrassonico\/sensor-ultrassonico-jsn-sr04t-a-prova-d-agua-modulo-para-arduino-4704.html\" target=\"_blank\" rel=\"noopener\">Sensor Ultrass\u00f4nico Imperme\u00e1vel JSN-SR04T<\/a><\/span> tamb\u00e9m conhecido como AJ-SR04M.<\/span><\/span><\/p>\n<p><span style=\"color: #000000;\">Ele \u00e9 o <span class=\"has-inline-color has-black-color\">mais vers\u00e1til e preciso, podendo detectar objetos com at\u00e9 2 metros de dist\u00e2ncia, tendo um \u00e2ngulo de feixe muito \u00fatil de 45 graus, capaz de medir com precis\u00e3o de at\u00e9 0,5cm. Ao contr\u00e1rio de outros sensores ultrass\u00f4nicos como o <span style=\"text-decoration: underline;\"><a style=\"color: #000000; text-decoration: underline;\" href=\"https:\/\/www.usinainfo.com.br\/sensor-ultrassonico\/sensor-ultrassonico-de-distancia-hc-sr04-2295.html\" target=\"_blank\" rel=\"noopener\">Sensor Ultrass\u00f4nico HC-SR04<\/a><\/span>.<\/span><\/span><\/p>\n<p><span style=\"color: #000000;\">O Sensor Ultrass\u00f4nico Imperme\u00e1vel Projeto Sensor JSN-SR04T oferece uma faixa de tens\u00e3o de opera\u00e7\u00e3o 5V (o que significa que pode funcionar em microcontroladores de 5V), possuindo baixo consumo de energia de apenas 20uA durante o repouso (o que significa que pode funcionar com baterias por anos!). Os outros sensores HCSR05 e JSN-SR04T possuem alta tens\u00e3o de opera\u00e7\u00e3o e consumo de corrente (o que n\u00e3o os torna a melhor escolha para baixo consumo de energia).<\/span><\/p>\n<p>&nbsp;<\/p>\n<div id=\"attachment_6170\" style=\"width: 710px\" class=\"wp-caption aligncenter\"><a style=\"color: #000000;\" href=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Sensor-Ultrassonico-JSN-SR04T-a-Prova-Dagua-Modulo-para-Arduino.jpg\" data-rel=\"lightbox-image-0\" data-rl_title=\"\" data-rl_caption=\"\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6170\" class=\"wp-image-6170 size-full\" title=\"'\u00e1gua + M\u00f3dulo para Arduino\" src=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Sensor-Ultrassonico-JSN-SR04T-a-Prova-Dagua-Modulo-para-Arduino.jpg\" alt=\"Sensor Ultrass\u00f4nico JSN-SR04T a Prova D'\u00e1gua + M\u00f3dulo para Arduino\" width=\"700\" height=\"400\" srcset=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Sensor-Ultrassonico-JSN-SR04T-a-Prova-Dagua-Modulo-para-Arduino.jpg 700w, https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Sensor-Ultrassonico-JSN-SR04T-a-Prova-Dagua-Modulo-para-Arduino-300x171.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><p id=\"caption-attachment-6170\" class=\"wp-caption-text\"><span style=\"color: #000000;\">Sensor Ultrass\u00f4nico JSN-SR04T 2.0 a Prova D&#8217;\u00e1gua + M\u00f3dulo para Arduino<\/span><\/p><\/div>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #000000;\">Certifique-se de comprar apenas sensores genu\u00ednos que sejam totalmente testados funcionalmente. Muitas falsifica\u00e7\u00f5es, clones e m\u00f3dulos de baixo custo podem n\u00e3o oferecer essas op\u00e7\u00f5es e voc\u00ea pode n\u00e3o conseguir faz\u00ea-los funcionar seguindo este guia.\u00a0<span class=\"has-inline-color has-black-color\">Existem muitos artigos e v\u00eddeos do YouTube mostrando que o JSN-SR04T 2.0 e o AJ-SR04M n\u00e3o est\u00e3o funcionando e recomendam o uso do SN-SR04T. Mas eles n\u00e3o se esfor\u00e7aram para faz\u00ea-los funcionar, apenas concluem que o sensor mais antigo JSN-SR04T com menos recursos \u00e9 melhor para uso com <span style=\"text-decoration: underline;\"><a style=\"color: #000000; text-decoration: underline;\" href=\"https:\/\/www.usinainfo.com.br\/arduino-74\" target=\"_blank\" rel=\"noopener\">Arduino<\/a><\/span>.<\/span><\/span><\/p>\n<p><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\">Recentemente, entregamos um produto eletr\u00f4nico personalizado usando o AJ-SR04M e conseguimos faz\u00ea-lo funcionar sem problemas.\u00a0O produto j\u00e1 chegou ao mercado e foi recebido com grande satisfa\u00e7\u00e3o tanto por nossos clientes quanto por seus usu\u00e1rios.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3 class=\"has-medium-font-size\"><span style=\"color: #000000;\"><strong><span class=\"has-inline-color has-black-color\">Especifica\u00e7\u00e3o do Sensor Ultrass\u00f4nico JSN-SR04T 2.0 a Prova D&#8217;\u00e1gua<\/span><\/strong><\/span><\/h3>\n<ul>\n<li><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\">Tens\u00e3o de opera\u00e7\u00e3o: DC 5V;<\/span><\/li>\n<li><span style=\"color: #000000;\">Faixa de opera\u00e7\u00e3o:\u00a0 de 25cm a 150cm;<\/span><\/li>\n<li><span style=\"color: #000000;\">Consumo de corrente total: 30mA;<\/span><\/li>\n<li><span style=\"color: #000000;\">Frequ\u00eancia: 40KHZ;<\/span><\/li>\n<li><span style=\"color: #000000;\">Resolu\u00e7\u00e3o: cerca de 0,5 cm;<\/span><\/li>\n<li><span style=\"color: #000000;\">\u00c2ngulo do feixe: menos de 50 graus;<\/span><\/li>\n<li><span style=\"color: #000000;\">Temperatura de trabalho: -10~70\u00b0C;<\/span><\/li>\n<li><span style=\"color: #000000;\">Temperatura de armazenamento: -20~80\u00b0C.<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2><\/h2>\n<h3><span style=\"color: #000000;\">Placa Principal <strong><span class=\"has-inline-color has-black-color\">Sensor JSN-SR04T \/ AJ-SR04M<\/span><\/strong><\/span><\/h3>\n<h3><\/h3>\n<div id=\"attachment_6171\" style=\"width: 360px\" class=\"wp-caption aligncenter\"><a style=\"color: #000000;\" href=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Placa-Principal-Sensor-JSN-SR04T-AJ-SR04M.jpg\" data-rel=\"lightbox-image-1\" data-rl_title=\"\" data-rl_caption=\"\" title=\"\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6171\" class=\"size-full wp-image-6171\" src=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Placa-Principal-Sensor-JSN-SR04T-AJ-SR04M.jpg\" alt=\"Placa Principal Sensor JSN-SR04T \/\u00a0 AJ-SR04M\" width=\"350\" height=\"250\" srcset=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Placa-Principal-Sensor-JSN-SR04T-AJ-SR04M.jpg 350w, https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Placa-Principal-Sensor-JSN-SR04T-AJ-SR04M-300x214.jpg 300w\" sizes=\"auto, (max-width: 350px) 100vw, 350px\" \/><\/a><p id=\"caption-attachment-6171\" class=\"wp-caption-text\"><span style=\"color: #000000;\">Placa Principal Sensor JSN-SR04T 2.0 \/\u00a0 AJ-SR04M<\/span><\/p><\/div>\n<h3><\/h3>\n<h3><\/h3>\n<h3><span style=\"color: #000000;\"><strong><span class=\"has-inline-color has-black-color\"><br \/>\nO JSN-SR04T 2.0 tem 5 modos de trabalho:<\/span><\/strong><\/span><\/h3>\n<h4><\/h4>\n<h4><span style=\"color: #000000;\"><span class=\"has-inline-color has-black-color\">&#8211; Trigger tradicional e modo de eco (o mesmo que o popular HC-SR04<\/span>\u00a0):<\/span><\/h4>\n<p><span style=\"color: #000000;\">Este\u00a0<span class=\"has-inline-color has-black-color\">modo usa pinos Trigger e Echo. Voc\u00ea ter\u00e1 que escolher dois pinos digitais em seu microcontrolador e um temporizador de software para calcular a dist\u00e2ncia.<\/span><\/span><\/p>\n<p><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\">Observe que a sequ\u00eancia de comunica\u00e7\u00e3o \u00e9 a mesma do HC SR04, mas certifique-se de que seu sinal alto no pino Trigger tenha pelo menos 10ms de largura. Alguns usu\u00e1rios relataram obter uma boa leitura somente ap\u00f3s aumentar a largura do gatilho para 20ms.<\/span><\/p>\n<p><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\">Este modo funciona com a popular biblioteca &#8220;Arduino Newping&#8221;. N\u00e3o \u00e9 obrigat\u00f3rio usar esta biblioteca, voc\u00ea tamb\u00e9m pode fazer o sensor funcionar com algumas linhas de c\u00f3digo. A biblioteca torna isso mais simples.<\/span><\/p>\n<div id=\"attachment_6172\" style=\"width: 778px\" class=\"wp-caption aligncenter\"><a style=\"color: #000000;\" href=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Trigger-tradicional-e-modo-de-eco-JSN-SR04T.jpg\" data-rel=\"lightbox-image-2\" data-rl_title=\"\" data-rl_caption=\"\" title=\"\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6172\" class=\"size-full wp-image-6172\" src=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Trigger-tradicional-e-modo-de-eco-JSN-SR04T.jpg\" alt=\"Trigger tradicional e modo de eco JSN-SR04T\" width=\"768\" height=\"334\" srcset=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Trigger-tradicional-e-modo-de-eco-JSN-SR04T.jpg 768w, https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Trigger-tradicional-e-modo-de-eco-JSN-SR04T-300x130.jpg 300w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><p id=\"caption-attachment-6172\" class=\"wp-caption-text\"><span style=\"color: #000000;\">Trigger tradicional e modo de eco JSN-SR04T<\/span><\/p><\/div>\n<p style=\"text-align: center;\"><span style=\"color: #000000;\"><em>Diagrama de tempo mostrando as diferentes etapas na opera\u00e7\u00e3o do sensor no modo Echo Trigger. Um sinal alto no pino do gatilho inicia a transmiss\u00e3o. Ao medir o tempo que o sensor leva para medir o sinal refletido, podemos calcular a dist\u00e2ncia do objeto.<\/em><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #000000;\">C\u00f3digo de exemplo para testar o modo Echo Trigger \u2013<\/span><\/p>\n<pre class=\"lang:default decode:true \">#define echoPin 11 \/\/ attach pin D2 Arduino to pin Echo of JSN-SR04T\r\n#define trigPin 12 \/\/attach pin D3 Arduino to pin Trig of JSN-SR04T\r\n\r\n\/\/ defines variables\r\nlong duration; \/\/ variable for the duration of sound wave travel\r\nint distance; \/\/ variable for the distance measurement\r\n\r\nvoid setup() {\r\n  pinMode(trigPin, OUTPUT); \/\/ Sets the trigPin as an OUTPUT\r\n  pinMode(echoPin, INPUT); \/\/ Sets the echoPin as an INPUT\r\n  Serial.begin(9600); \/\/ \/\/ Serial Communication is starting with 9600 of baud rate speed\r\n  Serial.println(\"Ultrasonic Sensor HC-SR04 Test\"); \/\/ print some text in Serial Monitor\r\n  Serial.println(\"with Arduino UNO R3\");\r\n}\r\nvoid loop() {\r\n  \/\/ Clears the trigPin condition\r\n  digitalWrite(trigPin, LOW);  \/\/\r\n  delayMicroseconds(2);\r\n  \/\/ Sets the trigPin HIGH (ACTIVE) for 10 microseconds\r\n  digitalWrite(trigPin, HIGH);\r\n  delayMicroseconds(10);\r\n  digitalWrite(trigPin, LOW);\r\n  \/\/ Reads the echoPin, returns the sound wave travel time in microseconds\r\n  duration = pulseIn(echoPin, HIGH);\r\n  \/\/ Calculating the distance\r\n  distance = duration * 0.034 \/ 2; \/\/ Speed of sound wave divided by 2 (go and back)\r\n  \/\/ Displays the distance on the Serial Monitor\r\n  Serial.print(\"Distance: \");\r\n  Serial.print(distance);\r\n  Serial.println(\" cm\");\/\/ working  code for aj-sr04m\r\n}<\/pre>\n<p>&nbsp;<\/p>\n<div style=\"width: 600px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-6164-1\" width=\"600\" height=\"490\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/ezgif.com-gif-maker-1-1.mp4?_=1\" \/><a href=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/ezgif.com-gif-maker-1-1.mp4\">https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/ezgif.com-gif-maker-1-1.mp4<\/a><\/video><\/div>\n<figure class=\"wp-block-video aligncenter\"><figcaption><span style=\"color: #000000;\"><em><em><span class=\"has-inline-color has-black-color\">Medi\u00e7\u00e3o da dist\u00e2ncia do obst\u00e1culo usando o m\u00f3dulo Sensor Ultrass\u00f4nico \u00e0 prova d&#8217;\u00e1gua no modo Tradicional, dist\u00e2ncia de sa\u00edda obtida no monitor serial e dist\u00e2ncia do obst\u00e1culo em mm<\/span><\/em><\/em>\u00a0<\/span><\/figcaption><\/figure>\n<p><span style=\"color: #000000;\">Este modo \u00e9 \u00fatil se voc\u00ea deseja substituir um sensor de disparo\/eco tradicional por este m\u00f3dulo.\u00a0In\u00fameras bibliotecas est\u00e3o dispon\u00edveis para que a programa\u00e7\u00e3o seja f\u00e1cil.\u00a0Mas requer 2 pinos de E\/S e fica complicado \u00e0 medida que o n\u00famero de sensores aumenta.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h4><span style=\"color: #000000;\">Gatilho tradicional de baixa pot\u00eancia e modo de eco<\/span><\/h4>\n<p><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\">Este modo de trabalho \u00e9 semelhante ao modo anterior, mas oferece um consumo de energia extremamente baixo. Este modo consome apenas cerca de 40uA de corrente durante o repouso. Perfeito se voc\u00ea estiver alimentando o sensor a partir de uma bateria. Para entrar neste modo, substitua o resistor R19 pelo resistor de 300K\u03a9 integrado.<\/span><\/p>\n<p><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Sensor-Ultrassonico-JSN-SR04T-a-Prova-Dagua.jpg\" data-rel=\"lightbox-image-3\" data-rl_title=\"\" data-rl_caption=\"\" title=\"\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6174 aligncenter\" src=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Sensor-Ultrassonico-JSN-SR04T-a-Prova-Dagua.jpg\" alt=\"\" width=\"700\" height=\"400\" srcset=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Sensor-Ultrassonico-JSN-SR04T-a-Prova-Dagua.jpg 700w, https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Sensor-Ultrassonico-JSN-SR04T-a-Prova-Dagua-300x171.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\">Neste modo, o m\u00f3dulo est\u00e1 em modo de suspens\u00e3o, quando um sinal alto com uma largura de pulso de mais de 1ms de disparo TTL \u00e9 fornecido, o m\u00f3dulo come\u00e7a a transmitir e receber o sinal ultrass\u00f4nico.<\/span><\/p>\n<p><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Gatilho-tradicional-de-baixa-potencia-e-modo-de-eco.jpg\" data-rel=\"lightbox-image-4\" data-rl_title=\"\" data-rl_caption=\"\" title=\"\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6175 aligncenter\" src=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Gatilho-tradicional-de-baixa-potencia-e-modo-de-eco.jpg\" alt=\"\" width=\"768\" height=\"334\" srcset=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Gatilho-tradicional-de-baixa-potencia-e-modo-de-eco.jpg 768w, https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Gatilho-tradicional-de-baixa-potencia-e-modo-de-eco-300x130.jpg 300w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #000000;\"><em>Diagrama de temporiza\u00e7\u00e3o: o m\u00f3dulo est\u00e1 no modo de suspens\u00e3o de baixa pot\u00eancia. Um sinal alto de 1ms no pino de disparo inicia a transmiss\u00e3o. Ao medir o tempo que o sensor leva para medir o sinal refletido, podemos calcular a dist\u00e2ncia do objeto.<\/em><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\">O c\u00f3digo de trabalho para seu modo \u00e9 o mesmo do modo 1. Modifique o pulso de disparo para uma largura de pulso maior que 1ms para acionar o sensor do modo de suspens\u00e3o.<\/span><\/p>\n<p><span style=\"color: #000000;\">Este modo \u00e9 muito \u00fatil se voc\u00ea usar o sensor em aplicativos movidos a bateria de baixa pot\u00eancia.\u00a0Oferece baixo consumo de energia, interfer\u00eancia zero com outros sensores e \u00e9 simples de usar.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h4><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\">Modo Serial Autom\u00e1tico<\/span><\/h4>\n<p><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\">Use o valor de resist\u00eancia 120K\u03a9, para entrar no modo de porta serial autom\u00e1tica.\u00a0O sinal de disparo n\u00e3o \u00e9 usado neste modo.\u00a0Neste modo, o c\u00e1lculo da dist\u00e2ncia acontece no sensor e ele emite a dist\u00e2ncia diretamente sobre a linha Echo a cada 120ms.<\/span><\/p>\n<p><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\">O AJ-SR04m transmite bytes por medi\u00e7\u00e3o, que \u00e9 mostrado abaixo.<\/span><\/p>\n<p><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-Serial-Automatico.jpg\" data-rel=\"lightbox-image-5\" data-rl_title=\"\" data-rl_caption=\"\" title=\"\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-6176\" src=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-Serial-Automatico.jpg\" alt=\"\" width=\"800\" height=\"124\" srcset=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-Serial-Automatico.jpg 800w, https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-Serial-Automatico-300x47.jpg 300w, https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-Serial-Automatico-768x119.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/span><\/p>\n<p><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\">Pulso de 40KHZ gerado internamente a cada 120ms e fornece a dist\u00e2ncia de sa\u00edda na linha de eco. dist\u00e2ncia em (mm). A soma de verifica\u00e7\u00e3o \u00e9 a sa\u00edda e a soma do Upperbyte e LowerByte. Checksum \u00e9 usado para verificar a perda de pacotes durante a transmiss\u00e3o.<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-Serial-Automatico-1.jpg\" data-rel=\"lightbox-image-6\" data-rl_title=\"\" data-rl_caption=\"\" title=\"\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6177 aligncenter\" src=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-Serial-Automatico-1.jpg\" alt=\"\" width=\"768\" height=\"334\" srcset=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-Serial-Automatico-1.jpg 768w, https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-Serial-Automatico-1-300x130.jpg 300w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><em>Diagrama de temporiza\u00e7\u00e3o: o m\u00f3dulo emite continuamente os dados de dist\u00e2ncia na linha de eco usando o protocolo serial<\/em><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #000000;\">C\u00f3digo de Amostra para testar o Modo Serial Autom\u00e1tico \u2013<\/span><\/p>\n<pre class=\"lang:default decode:true \">#include &lt;SoftwareSerial.h&gt;\r\n#define rxPin 10\r\n#define txPin 11\r\n \r\nSoftwareSerial jsnSerial(rxPin, txPin);\r\n \r\nvoid setup() {\r\n  jsnSerial.begin(9600);\r\n  Serial.begin(9600);\r\n}\r\n \r\nvoid loop() {\r\n  \/*jsnSerial.write(0x01);\r\n   delay(10);*\/\r\n  if(jsnSerial.available()){\r\n    getDistance();\r\n   \/\/\r\n  \r\n  }\r\n  \r\n}\r\nvoid getDistance(){\r\n  unsigned int distance;\r\n  byte startByte, h_data, l_data, sum = 0;\r\n  byte buf[3];\r\n  \r\n  startByte = (byte)jsnSerial.read();\r\n  if(startByte ==255){\r\n    jsnSerial.readBytes(buf, 3);\r\n    h_data = buf[0];\r\n    l_data = buf[1];\r\n    sum = buf[2];\r\n    distance = (h_data&lt;&lt;8) + l_data;\r\n    if((( h_data + l_data)) != sum){\r\n      Serial.println(\"Invalid result\");\r\n    }\r\n    else{\r\n      Serial.print(\"Distance [mm]: \"); \r\n      Serial.println(distance);\r\n      \r\n    } \r\n  } \r\n  \r\n  else return;\r\n  delay(100);\r\n}<\/pre>\n<p><span style=\"color: #000000;\">Use este modo se voc\u00ea n\u00e3o quiser fazer os c\u00e1lculos de dist\u00e2ncia em seu microcontrolador host.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h4><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\">Modo serial de baixa pot\u00eancia<\/span><\/h4>\n<p><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\">Use 47K\u03a9 em R19 para entrar no modo serial de baixa pot\u00eancia. Neste modo o sensor est\u00e1 em modo de baixo consumo de energia e consome 20uA. Quando o comando de disparo (0x01) \u00e9 recebido no pino de disparo, o sensor acorda, executa o c\u00e1lculo da dist\u00e2ncia e emite a dist\u00e2ncia pela linha de eco. O sensor volta ao repouso depois de transmitir os dados. Este modo tem um baixo consumo de energia em compara\u00e7\u00e3o com o modo anterior 3.<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-serial-de-baixa-potencia-.jpg\" data-rel=\"lightbox-image-7\" data-rl_title=\"\" data-rl_caption=\"\" title=\"\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6178 aligncenter\" src=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-serial-de-baixa-potencia-.jpg\" alt=\"\" width=\"768\" height=\"334\" srcset=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-serial-de-baixa-potencia-.jpg 768w, https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-serial-de-baixa-potencia--300x130.jpg 300w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><em>Diagrama de temporiza\u00e7\u00e3o: O m\u00f3dulo est\u00e1 em suspens\u00e3o. Um dado 0x01 no pino de disparo inicia o c\u00e1lculo da dist\u00e2ncia. Ap\u00f3s o c\u00e1lculo, a dist\u00e2ncia \u00e9 emitida na linha Echo. O m\u00f3dulo volta ao repouso.<\/em><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #000000;\">C\u00f3digo de Amostra para testar o Modo Serial de Baixa Pot\u00eancia \u2013<\/span><\/p>\n<pre class=\"lang:default decode:true \">#include &lt;SoftwareSerial.h&gt;\r\n#define rxPin 10\r\n#define txPin 11\r\n \r\nSoftwareSerial jsnSerial(rxPin, txPin);\r\n \r\nvoid setup() {\r\n  jsnSerial.begin(9600);\r\n  Serial.begin(9600);\r\n}\r\n \r\nvoid loop() {\r\n    jsnSerial.write(0x01);\r\n    delay(50);\r\n  if(jsnSerial.available()){\r\n    getDistance();\r\n  }\r\n}\r\nvoid getDistance(){\r\n  unsigned int distance;\r\n  byte startByte, h_data, l_data, sum = 0;\r\n  byte buf[3];\r\n  \r\n  startByte = (byte)jsnSerial.read();\r\n  if(startByte == 255){\r\n    jsnSerial.readBytes(buf, 3);\r\n    h_data = buf[0];\r\n    l_data = buf[1];\r\n    sum = buf[2];\r\n    distance = (h_data&lt;&lt;8) + l_data;\r\n    if((( h_data + l_data)&amp;0xFF) != sum){\r\n      Serial.println(\"Invalid result\");\r\n    }\r\n    else{\r\n      Serial.print(\"Distance [mm]: \"); \r\n      Serial.println(distance);\r\n    } \r\n  } \r\n  else return;\r\n}<\/pre>\n<figure class=\"wp-block-video aligncenter\"><figcaption><div style=\"width: 600px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-6164-2\" width=\"600\" height=\"490\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/ULTRASONIC.mp4?_=2\" \/><a href=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/ULTRASONIC.mp4\">https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/ULTRASONIC.mp4<\/a><\/video><\/div><\/p>\n<p style=\"text-align: left;\"><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\"><em>Medi\u00e7\u00e3o da dist\u00e2ncia do obst\u00e1culo usando o m\u00f3dulo Sensor Ultrass\u00f4nico \u00e0 prova d&#8217;\u00e1gua no modo serial Lowe power, dist\u00e2ncia de sa\u00edda obtida no monitor serial e dist\u00e2ncia do obst\u00e1culo em mm<\/em><\/span><\/p>\n<\/figcaption><\/figure>\n<p><span style=\"color: #000000;\">Use este modo se n\u00e3o quiser fazer c\u00e1lculos de dist\u00e2ncia em seu host e se quiser aplicativos de baixo consumo.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h4><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\">Modo de impress\u00e3o no computador:<\/span><\/h4>\n<p><span class=\"has-inline-color has-black-color\" style=\"color: #000000;\">Simplesmente coloque em curto o resistor R19(0 Ohm) para entrar neste modo. Este \u00e9 o modo mais f\u00e1cil em compara\u00e7\u00e3o com outros modos &#8211; o c\u00e1lculo da dist\u00e2ncia acontece a bordo e os dados de sa\u00edda podem ser lidos diretamente em qualquer software de terminal serial (incluindo o Serial Monitor no Arduino IDE).<\/span><\/p>\n<p><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-de-impressao-do-computador-.jpg\" data-rel=\"lightbox-image-8\" data-rl_title=\"\" data-rl_caption=\"\" title=\"\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6180 aligncenter\" src=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-de-impressao-do-computador-.jpg\" alt=\"\" width=\"768\" height=\"334\" srcset=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-de-impressao-do-computador-.jpg 768w, https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/Modo-de-impressao-do-computador--300x130.jpg 300w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/span><\/p>\n<p><span style=\"color: #000000;\">C\u00f3digo de amostra para testar o modo de impress\u00e3o do computador \u2013<\/span><\/p>\n<pre class=\"lang:default decode:true \">#include &lt;SoftwareSerial.h&gt;\r\n#define rxPin 10\r\n#define txPin 11\r\n \r\nSoftwareSerial jsnSerial(rxPin, txPin);\r\n \r\nvoid setup() {\r\n  \r\n  jsnSerial.begin(9600);\r\n  Serial.begin(9600);\r\n}\r\n \r\nvoid loop() {\r\n    jsnSerial.write(0x01);\r\n    delay(10);\r\n    if(jsnSerial.available()){\r\n    Serial.println(jsnSerial.readString());\r\n  }\r\n}<\/pre>\n<div style=\"width: 600px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-6164-3\" width=\"600\" height=\"486\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/computer-printing-mode.mp4?_=3\" \/><a href=\"https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/computer-printing-mode.mp4\">https:\/\/www.usinainfo.com.br\/blog\/wp-content\/uploads\/2022\/08\/computer-printing-mode.mp4<\/a><\/video><\/div>\n<figure class=\"wp-block-video aligncenter\"><figcaption><span style=\"color: #000000;\"><em><span class=\"has-inline-color has-black-color\">Medi\u00e7\u00e3o da dist\u00e2ncia do obst\u00e1culo usando o m\u00f3dulo Sensor Ultrass\u00f4nico \u00e0 prova d&#8217;\u00e1gua no modo de impress\u00e3o do computador, dist\u00e2ncia de sa\u00edda obtida no monitor serial e dist\u00e2ncia do obst\u00e1culo em mm<\/span><\/em><\/span><\/figcaption><\/figure>\n<p><span style=\"color: #000000;\">Use este modo se desejar uma maneira r\u00e1pida e f\u00e1cil de ler os dados do sensor.\u00a0Sem qualquer processamento de host.<\/span><\/p>\n<p><span style=\"color: #000000;\">Agora \u00e9 com voc\u00ea, escolha os produtos que deseja utilizar em seu Projeto Sensor JSN-SR04T e fa\u00e7a os devidos testes para obter os melhores resultados conforme o modo de funcionamento desejado.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">Post traduzido e adaptado do Artigo: &#8220;<span style=\"text-decoration: underline;\"><a style=\"color: #000000; text-decoration: underline;\" href=\"https:\/\/tutorials.probots.co.in\/communicating-with-a-waterproof-ultrasonic-sensor-aj-sr04m-jsn-sr04t\/\" target=\"_blank\" rel=\"noopener\">How to Communicate Waterproof Ultrasonic Sensor AJ-SR04M\/JSN-SR04T with Arduino\/ESP32<\/a><\/span>&#8220;.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Como comunicar o sensor ultrass\u00f4nico \u00e0 prova d&#8217;\u00e1gua JSN-SR04T com Arduino? \u00c0 medida que os sensores ultrass\u00f4nicos come\u00e7aram a ser usados \u200b\u200bem carros como sensores de estacionamento reverso, os fabricantes come\u00e7aram a produzi-los em grande escala, o que os tornou facilmente dispon\u00edveis em uma ampla variedade de modelos a pre\u00e7os mais em conta. Entre eles, o Sensor Ultrass\u00f4nico Imperme\u00e1vel JSN-SR04T tamb\u00e9m conhecido como AJ-SR04M. Ele \u00e9 o mais vers\u00e1til e preciso, podendo detectar objetos com at\u00e9 2 metros de dist\u00e2ncia, tendo um \u00e2ngulo de feixe muito \u00fatil de 45 graus, capaz de medir com precis\u00e3o de at\u00e9 0,5cm. Ao contr\u00e1rio de outros sensores ultrass\u00f4nicos como o Sensor Ultrass\u00f4nico HC-SR04. O Sensor Ultrass\u00f4nico Imperme\u00e1vel Projeto Sensor JSN-SR04T oferece uma faixa de [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":6188,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,1],"tags":[100,323,318,322,228],"class_list":["post-6164","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-arduino","category-projetos","tag-projeto-arduino","tag-sensor-aj-sr04m","tag-sensor-arduino","tag-sensor-jsn-sr04t-2-0","tag-sensor-ultrassonico"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Projeto Sensor JSN-SR04T Comunica\u00e7\u00e3o Arduino - Blog UsinaInfo<\/title>\n<meta name=\"description\" content=\"Projeto Sensor JSN-SR04T Comunica\u00e7\u00e3o com Arduino Completo com Passo a Passo tem no Blog UsinaInfo. 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