Koyarwar ESP32 44/55 - Sabar Yanar Gizo na Kyamara ESP32 Bidiyo Mai Gudana Ta Wifi CAM-2 | Kunshin ESP32 na SunFounder
A cikin wannan koyawa, za mu ƙirƙiri tashar yanayi ta ainihi ta amfani da ESP32 da kuma karin kayan kyamararsa. Wannan aikin zai baiwa ESP32 damar nuna bayanan yanayi kamar zazzabi da zafi akan allon LCD, yayin da yake watsa bidiyo ta hanyar Wi-Fi. A ƙarshen wannan koyawa, za ku sami cikakkiyar tashar yanayi wadda ke sabuntawa kowane sakan 10, tana ba da muhimman bayanan yanayi a hannunku. Don ƙarin haske, koma ga bidiyon (a cikin bidiyo a 00:00).
Bayanin Kayan Aiki
Babban sassan wannan aikin sun haɗa da microcontroller na ESP32, allon LCD, da kuma na'urar kyamara. ESP32 microcontroller ne mai ƙarfi wanda ke da damar Wi-Fi da Bluetooth a cikinsa, yana ba shi damar haɗawa da intanet da sadarwa da sauran na'urori. Na'urar kyamara tana ba da damar watsa bidiyo, yayin da allon LCD ke nuna bayanan yanayi ga mai amfani.
LCD ɗin da aka yi amfani da shi a wannan aikin allon nuni ne na haruffa 20x4, wanda zai iya nuna adadi mai yawa na bayanai a lokaci ɗaya. An haɗa shi da ESP32 don nuna zazzabi, zafi, da sauran bayanan yanayi da aka samo daga API na kan layi. ESP32 kuma ya haɗa da tsarin sarrafa baturi, yana ba shi damar aiki ba tare da waya ba.
Cikakkun Bayanan Datasheet
| Mai Ƙirƙira | Espressif |
|---|---|
| Lambar sashi | ESP32-WROOM-32 |
| Ƙarfin Logic/IO | 3.3 V |
| Ƙarfin samarwa | 3.0 - 3.6 V |
| Ƙarfin fitarwa (kowane GPIO) | 12 mA |
| Ƙarfin kololuwa (kowane GPIO) | 40 mA |
| Jagorar mitar PWM | 1 kHz |
| Matakan ƙofar shigarwa | 0.3 * VDD zuwa 0.7 * VDD |
| Ragewar ƙarfi / RDS(on) / saturation | 0.1 V (typ.) |
| Iyakokin zafi | 125 °C |
| Kunshin | QFN48 |
| Bayanan kula / bambance-bambance | Ya haɗa da zaɓuɓɓukan PSRAM |
- Tabbatar da samar da wutar lantarki mai kyau (3.0 - 3.6 V).
- Yi amfani da na'urorin sanyaya zafi don aikace-aikacen da ke buƙatar ƙarfi mai yawa.
- Yi taka tsantsan game da iyakokin ƙarfin GPIO (12 mA kowane pin).
- Haɗa LCD da kyamara da kyau don guje wa rashin sadarwa.
- Duba bayanan shiga Wi-Fi da maɓallan API don matsalolin haɗin kai.
Umarnin Haɗin Waya
Don haɗa ESP32 da LCD da na'urar kyamara, fara da haɗa pins na wutar lantarki da ƙasa. Haɗa pin na ƙasa na ESP32 zuwa ƙasa na LCD da kyamara. Sa'an nan, haɗa pin na 5V na ESP32 zuwa VCC na LCD. Don kyamara, haɗa wayar launin ruwan kasa zuwa ƙasa, wayar ja zuwa 5V, wayar rawaya zuwa GPIO 21, da wayar orange zuwa GPIO 22. Tabbatar cewa haɗin suna da ƙarfi don guje wa matsaloli yayin aiki.
Bayan haka, haɗa LCD zuwa pins na GPIO da suka dace. Pins na musamman na iya bambanta dangane da tsarin ku, amma yawanci, za ku haɗa pins na sarrafawa zuwa wasu GPIO na ESP32. Tabbatar da duba datasheet ko zanen pinout don takamaiman samfurin LCD ɗinku don tabbatar da daidaitaccen haɗin waya. Bayan kammala waɗannan haɗin, sake duba duk wayoyi don duba ko akwai sako-sako ko kuskuren haɗi.
Misalan Lamba & Bayani
A cikin lambar, mun fara haɗa da littattafan da ake buƙata don sarrafa kyamara da ayyukan Wi-Fi. An bayyana mahimman masu ganowa, gami da ssid da password don bayanan shiga Wi-Fi. An saita tsarin kyamara ta amfani da tsarin camera_config_t, inda muke ayyana sigogi daban-daban kamar tsarin pixel da girman firam.
const char* ssid = "SSID";
const char* password = "PASSWORD";
void setup() {
Serial.begin(115200);
camera_config_t config;
// ... (saitin tsarin)
esp_err_t err = esp_camera_init(&config);
// Duba kurakurai
}
Wannan ɓangaren lambar yana fara kyamara kuma yana duba kurakurai yayin saitin. Idan kyamara ta kasa farawa, za a buga saƙon kuskure a kan serial monitor.
Bayan haka, muna sarrafa haɗin Wi-Fi kuma mu fara sabar kyamara. Tsarin haɗin yana ci gaba har sai an sami nasarar haɗin Wi-Fi, wanda ke da mahimmanci don samo bayanan yanayi daga API.
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
startCameraServer();
A wannan ɓangaren, muna fara haɗin Wi-Fi kuma muna buga dige-dige a kan serial monitor har sai an kafa haɗin. Da zarar an haɗa, ana fara sabar kyamara, wanda ke ba da damar watsa bidiyo.
Cikakken lambar za ta ɗora a ƙasan labarin, inda za ku ga yadda duk sassan ke haɗuwa.
Nuni / Abin da za ku Yi Tsammani
Da zarar an haɗa komai kuma an ɗora lambar, za ku iya tsammanin ESP32 zai haɗa da hanyar sadarwar Wi-Fi kuma ya fara samo bayanan yanayi kowane sakan 10. Za a nuna karatun zazzabi da zafi a kan allon LCD. Bugu da ƙari, kyamara za ta watsa bidiyo ta Wi-Fi, wanda za a iya samunsa ta hanyar adireshin IP na gida da aka buga a serial monitor. Idan haɗin Wi-Fi ya gaza, ESP32 zai sanar da ku ta hanyar fitarwa na serial (a cikin bidiyo a 10:00).
Lokutan Bidiyo
- 00:00 Farawa
- 1:42 Gabatarwa ga ESP32-Cam
- 4:30 Bayanin lambar Arduino
- 7:35 Zaɓin Board na ESP32 da tashar COM a cikin Arduino IDE
- 9:17 Nuni
- 12:06 Nuni a Wayar Hannu
#include "esp_camera.h"
#include <WiFi.h>
//
// WARNING!!! PSRAM IC required for UXGA resolution and high JPEG quality
// Ensure ESP32 Wrover Module or other board with PSRAM is selected
// Partial images will be transmitted if image exceeds buffer size
//
// You must select partition scheme from the board menu that has at least 3MB APP space.
// Face Recognition is DISABLED for ESP32 and ESP32-S2, because it takes up from 15
// seconds to process single frame. Face Detection is ENABLED if PSRAM is enabled as well
// ===================
// Select camera model
// ===================
//#define CAMERA_MODEL_WROVER_KIT // Has PSRAM
// #define CAMERA_MODEL_ESP_EYE // Has PSRAM
//#define CAMERA_MODEL_ESP32S3_EYE // Has PSRAM
//#define CAMERA_MODEL_M5STACK_PSRAM // Has PSRAM
//#define CAMERA_MODEL_M5STACK_V2_PSRAM // M5Camera version B Has PSRAM
//#define CAMERA_MODEL_M5STACK_WIDE // Has PSRAM
//#define CAMERA_MODEL_M5STACK_ESP32CAM // No PSRAM
//#define CAMERA_MODEL_M5STACK_UNITCAM // No PSRAM
#define CAMERA_MODEL_AI_THINKER // Has PSRAM
//#define CAMERA_MODEL_TTGO_T_JOURNAL // No PSRAM
//#define CAMERA_MODEL_XIAO_ESP32S3 // Has PSRAM
// ** Espressif Internal Boards **
//#define CAMERA_MODEL_ESP32_CAM_BOARD
//#define CAMERA_MODEL_ESP32S2_CAM_BOARD
//#define CAMERA_MODEL_ESP32S3_CAM_LCD
#include "camera_pins.h"
// Replace the next variables with your SSID/Password combination
const char* ssid = "SSID";
const char* password = "PASSWORD";
void startCameraServer();
void setupLedFlash(int pin);
void setup() {
Serial.begin(115200);
Serial.setDebugOutput(true);
Serial.println();
camera_config_t config;
config.ledc_channel = LEDC_CHANNEL_0;
config.ledc_timer = LEDC_TIMER_0;
config.pin_d0 = Y2_GPIO_NUM;
config.pin_d1 = Y3_GPIO_NUM;
config.pin_d2 = Y4_GPIO_NUM;
config.pin_d3 = Y5_GPIO_NUM;
config.pin_d4 = Y6_GPIO_NUM;
config.pin_d5 = Y7_GPIO_NUM;
config.pin_d6 = Y8_GPIO_NUM;
config.pin_d7 = Y9_GPIO_NUM;
config.pin_xclk = XCLK_GPIO_NUM;
config.pin_pclk = PCLK_GPIO_NUM;
config.pin_vsync = VSYNC_GPIO_NUM;
config.pin_href = HREF_GPIO_NUM;
config.pin_sccb_sda = SIOD_GPIO_NUM;
config.pin_sccb_scl = SIOC_GPIO_NUM;
config.pin_pwdn = PWDN_GPIO_NUM;
config.pin_reset = RESET_GPIO_NUM;
config.xclk_freq_hz = 20000000;
config.frame_size = FRAMESIZE_UXGA;
config.pixel_format = PIXFORMAT_JPEG; // for streaming
// config.pixel_format = PIXFORMAT_RGB565; // for face detection/recognition
config.grab_mode = CAMERA_GRAB_WHEN_EMPTY;
config.fb_location = CAMERA_FB_IN_PSRAM;
config.jpeg_quality = 12;
config.fb_count = 1;
// if PSRAM IC present, init with UXGA resolution and higher JPEG quality
// for larger pre-allocated frame buffer.
if(config.pixel_format == PIXFORMAT_JPEG){
if(psramFound()){
config.jpeg_quality = 10;
config.fb_count = 2;
config.grab_mode = CAMERA_GRAB_LATEST;
} else {
// Limit the frame size when PSRAM is not available
config.frame_size = FRAMESIZE_SVGA;
config.fb_location = CAMERA_FB_IN_DRAM;
}
} else {
// Best option for face detection/recognition
config.frame_size = FRAMESIZE_240X240;
#if CONFIG_IDF_TARGET_ESP32S3
config.fb_count = 2;
#endif
}
#if defined(CAMERA_MODEL_ESP_EYE)
pinMode(13, INPUT_PULLUP);
pinMode(14, INPUT_PULLUP);
#endif
// camera init
esp_err_t err = esp_camera_init(&config);
if (err != ESP_OK) {
Serial.printf("Camera init failed with error 0x%x", err);
return;
}
sensor_t * s = esp_camera_sensor_get();
// initial sensors are flipped vertically and colors are a bit saturated
if (s->id.PID == OV3660_PID) {
s->set_vflip(s, 1); // flip it back
s->set_brightness(s, 1); // up the brightness just a bit
s->set_saturation(s, -2); // lower the saturation
}
// drop down frame size for higher initial frame rate
if(config.pixel_format == PIXFORMAT_JPEG){
s->set_framesize(s, FRAMESIZE_QVGA);
}
#if defined(CAMERA_MODEL_M5STACK_WIDE) || defined(CAMERA_MODEL_M5STACK_ESP32CAM)
s->set_vflip(s, 1);
s->set_hmirror(s, 1);
#endif
#if defined(CAMERA_MODEL_ESP32S3_EYE)
s->set_vflip(s, 1);
#endif
// Setup LED FLash if LED pin is defined in camera_pins.h
#if defined(LED_GPIO_NUM)
setupLedFlash(LED_GPIO_NUM);
#endif
WiFi.begin(ssid, password);
WiFi.setSleep(false);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
startCameraServer();
Serial.print("Camera Ready! Use 'http://");
Serial.print(WiFi.localIP());
Serial.println("' to connect");
}
void loop() {
// Do nothing. Everything is done in another task by the web server
delay(10000);
}
Common Course Links
Common Course Files
Albarkatun da kuma shafukan da za a duba
-
TakarduESP32 Tutorial 44/55- SunFounder doc page for camera web serverdocs.sunfounder.com
Fayiloli📁
Babu fayiloli da ake da su.