esp32 cam tft display pricelist

This ESP32-CAM Project covers how to use ESP32-CAM with a TFT display to show the picture captured by the cam. We have covered several times how to use ESP32-CAM in different projects and we have described how to use ESP32-CAM in Machine Learning projects. Even if we can use ESP32-CAM with a Web server to show pictures, in this post we want to cover how to show a picture on a TFT screen (ST7735). Therefore, we would like to visualize the picture taken by the ESP32-CAM directly on the display. In this case, we use an ST7735s display, anyway, you can select a different TFT if you like.

You should already know how to take a picture using an ESP32-CAM therefore we will focus on two aspects only:How to connect the ESP32-CAM to TFT display

This is the most interesting part because here we will show the picture taken by the ESP32-CAM on the TFT display. To do it, we will use the TJpg_Decoder library because it simplifies our work. First of all, we use a low-resolution such as 120×160 so that the picture fits in the TFT.

defining the scale and the callback method used to render the picture:bool tft_output(int16_t x, int16_t y, uint16_t w, uint16_t h, uint16_t* bitmap){

At the end of this tutorial, you have learned how to use ESP32-CAM with TFT display. In this project we have integrated ESP32-CAM with ST7735 to show the image captured. We have build a simple camera machine using ESP32-CAM.

A beautiful 3.5” touchscreen display, based on ESP32-WROVER, with a built-in 2M pixel OV2640 camera, makes it an ever perfect platform for your ESP32 projects.

Makerfabs ESP32 3.5” Touch with camera is absolutely open for makers, and besides, Makerfabs provide plenty of Demos to help the users on the usage. Have a try at this fantastic display in your next ESP32 project!~

This board features an OV2640 camera, a 0.96 inch SSD1306 OLED display, a 5 pin JST connector with exposed I2C pins, a battery connector, a PIR motion sensor, on‑board RESET button, and a function button connected to GPIO 34. Finally, it also has a micro-USB interface that makes it easy and quick to upload code to the board. The board doesn’t support microSD card.

It is the same camera of the ESP32-CAM AI-Thinker board and other similar ESP32 camera development boards. When you get the board, you can choose between the regular camera and the fish-eye camera. We got the one with fish-eye camera.

This board comes equipped with a 0.96 inch SSD1306 OLED display. The OLED display comes with the SSD1306 driver, which means you can use the Adafruit SSD1306 or the oled-ssd1306 libraries.

The OLED communicates with the ESP32 using the I2C communication protocol on GPIO 21 (SDA) and GPIO 22 (SCL). These are the default ESP32 I2C pins, so you can use the OLED examples for the ESP32 in this board without making any changes.

This camera board comes loaded with a video streaming example. It creates an access point that you can access on your smartphone or computer to watch the video. It is the same sample video streaming web server example that we use with the ESP32-CAM AI-Thinker.

Power the ESP32 through the USB cable (you can just connect it to a USB port in your computer for testing purposes). Go to your smartphone Wi-Fi settings, and there should be an ESP32 wireless network. Connect to that network.

Note: we’ve flashed the camera with a new example before taking pictures. The previous image is from another camera, but it runs the same project that is loaded in the TTGO T-Camera with PIR and OLED display.

Both boards use the OV2640 camera, so the ESP32-CAM projects (that don’t use SD card) should be compatible with this board. You just need to change the camera pins definition. Use the following pin definition for this board:

The most popular and cheap ESP32-CAM model is the AI-Thinker. However, the ESP32 TTGO T-Camera with OLED and PIR can be a better choice depending on your project requirements. Let’s take a quick look at the differences between each board.

The TTGO T-Camera comes with an OLED display and a PIR motion sensor. These peripherals can be very useful in surveillance and home automation projects. So, having everything on the same board can be very useful (instead of building the circuit yourself). Besides, it also adds a pushbutton connected to GPIO 34 that can trigger any task.

The ESP32 TTGO T-Camera is a very versatile ESP32 camera development board. If you want to have a general overview and compare other ESP32 camera boards, read this article: ESP32 Camera Dev Boards Review and Comparison (Best ESP32-CAM).

Register in our brand new ESP32 course with Arduino IDE. This is our complete guide to program the ESP32 with Arduino IDE, including projects, tips, and tricks! The registrations are open, so

At first it was not successful, since most examples useTJpg_Decoderand it use a lot of memory, causing the ESP32-CAM crash then reboot. Then I found out that there"s an function from the ESP32 library to convert JPEG into RGB565 (which is the format used by the Adafruit driver). I can even scale the image to 1/2 side size (= 1/4) so it fit the ST7735S 160x128 or 128x128 displays nicely. Everything works and problem solved.

You can find some more details about wiring, the training data (Kaggle Cats and Dogs Dataset) and the model (MobileNetV1 96x96 0.25 with transfer learning) on my repo. There"s also a copy of my model library and a boilerplate version (without using button and TFT).

The train accuracy is 89.8% and test accuracy is 86.97% on Edge Impulse. Captured image is 240x240 (resized to 120x120 on TFT and 96x96 for the model). Model inference (predict) time on ESP32-CAM is 2607 ms (2.6 secs). It"s not fast, but the setup is so cheap I think this can actually be useful as real world applications...?

ESP32-CAM is a WIFI+ Bluetooth dual-mode development board that uses PCB onboard antennas and cores based on ESP32 chips. It can work independently as a minimum system. ESP integrates WiFi, traditional Bluetooth, and BLE Beacon, with 2 high-performance 32-bit LX6 CPUs, 7-stage pipeline architecture, main frequency adjustment range 80MHz to 240MHz, on-chip sensor, Hall sensor, temperature sensor, etc.

The ESP32 camera module is fully compliant with WiFi 802.11b/g/n/e/i and Bluetooth 4.2 standards, it can be used as a master mode to build an independent network controller, or as a slave to other host"s MCUs to add networking capabilities to existing devices. ESP32-CAM can be widely used in various IoT applications.

The reason I am very interested in this board is that it is an extremely capable little board. This board features an extremely capable processor, a tiny camera, a LED flash, a micro SD card slot, Bluetooth and WiFi and it costs less than $10. This is really amazing. I board like this would be science fiction a few years ago, but now it is available to all makers out there.

First of all, let’s see where to buy it. I bought my ESP32 cam board from Banggood.com for $6.99. I have posted some links below where you can buy this board. Prices fluctuate from time to time but it should be less than $10.

US$11.99 Geekcreit® ESP32-CAM WiFi + bluetooth Camera Module Development Board ESP32 With Camera Module OV2640  Module Board For Arduino from Electronics on banggood.com

I would love to read your thoughts on the ESP32 cam board. Also, I would love to see what kind of project you are going to build with this board. Please post your comments below. I will see you soon.

// NB. I am using the Arduino IDE v1.8.19,// and the ESP32 software from "https://github.com/espressif/arduino-esp32", BUT the ESP32 software version downloaded on 28May21.// (Note that the version as at now (19Aug22) seems to have a bug in it that stops the camera giving a valid photo.)// I am using Board="AI Thinker ESP32-CAM"#include "FS.h"#include #include #include     // https://github.com/adafruit/Adafruit-GFX-Library#include // https://github.com/adafruit/Adafruit_ILI9341#include     // https://github.com/Bodmer/TJpg_Decoder#include "esp_camera.h"#define CAMERA_MODEL_AI_THINKER // Has PSRAM#include "camera_pins.h"#define BLOCK_SERIAL // comment-out to use GPIO-1 & GPIO-3 for Serial-output instead (useful for debugging Camera & TFT)#ifdef BLOCK_SERIAL#define Serial tft#define SD_CS 1     // via 1k for safety#define SWITCH_PIN 3 // via 1k for safety#else// GPIO-1 is ESP32-Tx// GPIO-3 is ESP32-Rx#endif#define RED_LED 33#define SPI_MOSI 13#define SPI_MISO 12#define SPI_CLK 14#define TFT_DC   2 // Data Command control pin#define TFT_CS  15 // Chip select control pin#define TFT_RST -1 // or can connect to GPIO-16 via 1k for safety (but GPIO also used for the PSRAM)SPIClass MySPI(HSPI); // Declare an HSPI bus object (to use or BOTH TFT and SD-card)Adafruit_ILI9341 tft = Adafruit_ILI9341(&MySPI, TFT_DC, TFT_CS, TFT_RST);// Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, SPI_MOSI, SPI_CLK, TFT_RST,SPI_MISO);#define TFT_ROTATION 0 // 0 to 3boolean camera_ok;// ******************************************************************************************void setup() { // ***************************************************************************tft.begin();tft.setRotation(TFT_ROTATION);tft_clear();tft.println("Hello World");#ifdef RED_LEDpinMode(RED_LED, OUTPUT);LED_flash(2);#endif#ifdef BLOCK_SERIAL#ifdef SWITCH_PINpinMode(SWITCH_PIN, INPUT_PULLUP);#endif#ifdef SD_CSSerial.print("SDcard: ");boolean success=SD.begin(SD_CS,MySPI);if (success) {Serial.println("OK");} // works!else {Serial.println("Fail: check formatted SD-card is in!"); return;} // dont do the rest of setup()!#endif#elseSerial.begin(115200);Serial.println("ESP32-CAM WITHOUT SD-Card");#endifcamera_ok=camera_init();TJpgDec.setJpgScale(1);TJpgDec.setCallback(tft_output); // "tft_output" is passed to the decoderSerial.print("\nRunning ");if (camera_ok) Serial.println("OK"); else Serial.println("but without Camera");delay(5000);} // end of setup() // **********************************************************************// ******************************************************************************************// ******************************************************************************************void loop() { // ****************************************************************************#define photo_count_max 12 // 0 to 11static int photo_next_free=photo_count_max; // 0=none, -1=none-already-reported // set to "photo_count_max" on boot so will count number of photos!#ifdef SWITCH_PINboolean push_switch=!digitalRead(SWITCH_PIN);if (push_switch) {tft_clear();Serial.println("Release for photo OR");Serial.println("Hold 3s = delete ALL");int x;for (x=0;x<12;x++) {delay(250); if (digitalRead(SWITCH_PIN)) break;} // allow for switch bounceif (x==12) {push_switch=false; sd_wipe_all(); photo_next_free=0;}}#elsedelay(5000);boolean push_switch=true;#endifif (push_switch) photo_next_free=take_picture(photo_next_free);else if (photo_next_free>0) {photo_next_free=sd_load_and_display(photo_next_free);} // NEXT-EMPTY photo-countelse if (photo_next_free==0) {photo_next_free=-1; tft_clear(); Serial.println("No photos!");} // only report once} // end of loop() // ***********************************************************************// ******************************************************************************************#ifdef RED_LEDvoid LED_flash(int count) {count*=2;boolean state=LOW; // LOW is ONwhile (count--) {digitalWrite(RED_LED,state); state=!state; delay(1000);}}#endif// ******************************************************************************************#if ((TFT_ROTATION&B1)==1)#define tft_text_row 0#else#define tft_text_row 260 // 240x320#endifvoid tft_top() {tft.setCursor(0,0);}void tft_text() {tft.setCursor(0,tft_text_row);}void tft_clear() {tft.fillScreen(ILI9341_BLACK);tft.setCursor(0,0); // toptft.setTextColor(ILI9341_WHITE);tft.setTextSize(2); // 1 to 5 // was 4}boolean tft_output(int16_t x, int16_t y, uint16_t w, uint16_t h, uint16_t* bitmap) {if (y>=tft.height()) return false;tft.drawRGBBitmap(x, y, bitmap, w, h);return true;}// ******************************************************************************************char* sd_build_file_name(int photo) {if (photo>999) photo=999;static char text[]="/photoXXX.jpg";snprintf(text+6,3+1,"%d",photo);char *p1=text+strlen(text);strcpy(p1,".jpg");return text;}void sd_wipe_all() {tft_clear();Serial.println("Deleting photos:");boolean found=false;fs::FS &fs = SD;for (int x=(photo_count_max-1);x>=0;x--) {char *path=sd_build_file_name(x);boolean success=fs.remove(path);if (success) found=true;if (found) {Serial.print(path+1); Serial.print("->");if (success) Serial.println("Deleted"); else Serial.println("Failed");} }if (!found) Serial.println("No photos to delete!");delay(5000);}int sd_load_and_display(int photo_next) { // returns NEXT_EMPTY_photo_count (ie. 0 if no photos)#ifdef BLOCK_SERIALif ((photo_next<0) or (photo_next>=photo_count_max)) photo_next=0;int first_blank=photo_count_max;for (int y=0;y=(photo_count_max-1)) photo_next=0; else photo_next++; // next photo}return first_blank; // NEXT_EMPTY photo_count (0 if empty, photo_count_max if full)#elseSerial.println("Can"t use SD-Card as uses GPIO-1");return 0;#endif}// ******************************************************************************************boolean camera_init() {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_sscb_sda = SIOD_GPIO_NUM;config.pin_sscb_scl = SIOC_GPIO_NUM;config.pin_pwdn = PWDN_GPIO_NUM;config.pin_reset = RESET_GPIO_NUM;config.xclk_freq_hz = 20000000;config.pixel_format = PIXFORMAT_JPEG;Serial.print("PSRAM: ");if (psramFound()){ // larger buferSerial.println("OK");config.frame_size = FRAMESIZE_QVGA;config.jpeg_quality = 10;config.fb_count = 1;} else { // smaller bufferSerial.println("FAILED");config.frame_size = FRAMESIZE_QQVGA;config.jpeg_quality = 12;config.fb_count = 1;}esp_err_t camera_status;for (int x=0;x<2;x++) { // try twice as sometimes get error 0x20004delay(2000);camera_status = esp_camera_init(&config);Serial.print("Camera init: ");if (camera_status!=ESP_OK) {Serial.print("failed with error 0x"); Serial.println(camera_status,HEX);}else {Serial.println("OK"); break;}}if (camera_status!=ESP_OK) return false; // exitsensor_t *sensor = esp_camera_sensor_get();if (sensor->id.PID == OV3660_PID) Serial.println("*** WARNING: Old-PID Sensor Detected - need to adjust settings ***");return true;}int take_picture(int photo_next) {int photo_try=photo_next;if ((photo_try<0) or (photo_try>=photo_count_max)) photo_try=0;boolean success=false;Serial.print("Taking photo...");#ifndef BLOCK_SERIALtft_clear();tft.println("Taking photo...");#endifdelay(1000);camera_fb_t * fb=nullptr;fb = esp_camera_fb_get();if (!fb) Serial.println("Fail?\nTry rebooting!");else {Serial.println();char *path=sd_build_file_name(photo_try);#ifdef BLOCK_SERIALfs::FS &fs = SD;File file = fs.open(path, FILE_WRITE); // will overwrite any existing file!!if (file) {file.write(fb->buf, fb->len);photo_try++; photo_next=photo_try; // can give "photo_count_max" and return this to calling sub!success=true;}file.close();#elsesuccess=true;#endifuint16_t w=0, h=0;TJpgDec.getJpgSize(&w, &h, fb->buf, fb->len);TJpgDec.drawJpg(0, 0, fb->buf, fb->len); // Display photo#if (tft_text_row==0)delay(5000); // bodge#endifif (success) tft_text();#ifdef BLOCK_SERIAL // ensure following photo is deleted (so on re-start we know where to start)!Serial.print(path+1);Serial.print("->");if (success) {Serial.println("Saved"); char *path=sd_build_file_name(photo_next); fs.remove(path);} else Serial.println("Fail");#elsetft.print(path+1);tft.println("->No Save");#endif}delay(5000);return photo_next;}

For this tutorial I’ve used an ESP32 -CAM, a 1.8″ TFT screen, an 18650 USB powerbank and a 3D printed case to make a selfie camera that automatically takes a photo when it sees a person’s face. The project has a lot of steps but is fairly simple. You can make it version without having a 3D printer.

Before uploading the code a few things need to be set up in the Arduino IDE. If this is your first time with the ESP32-CAM in the Arduino IDE you need to set up the ESP32 hardware libraries, learn to connect and test by following this tutorial ESP32-CAM in the Arduino IDE

There’s three libraries that need to be installed. The TFT_eSPI can easily be installed from the IDE library manager (Tools > Manage Libraries) by searching for TFT_eSPI. The TFT_eFEX and ESPAsyncWebserver libraries need to be installed by downloading the libraries using the the ‘Download ZIP’ link and in the IDE installing them with Sketch > Include Library > Add .ZIP Library.

The TFT_eSPI library needs to be configured to work with the ST7735S TFT panel. Copy the contents of the User_Setup.h file into the newly installed library file User_Setup.h file found in Documents > Arduino > libraries > TFT_eSPI. If you find the image quality is poor you can try other xxxxTAB versions. These refer to the colours of the tab on the screen protector but don’t match 100%.

If you want to use the countdown animation, the images for this need to be uploaded to the ESP32 memory. To do this follow the instructions to install the data folder uploader here: ESP32 Data Folder Uploader . Remember if you change the partition scheme in the IDE this data will be over-written.

Download the ZIP file from the project folder on Github https://github.com/robotzero1/esp32cam-selfiecam and unzip to your Arduino folder (In Windows 10 – Libraries > Documents > Arduino) in a directory named SelfieCam.

Below is a quick video showing the the selfie capture sequence, starting with the face being detected, the flash lighting up, the photo being taken and finally the photo being displayed from the ESP32 SPIFFS storage:

The code uses a mixture of HTTP requests and WebSockets. When the browser first connects to the ESP32 the HTML interface is sent via HTTP with this code: webserver.on("/", HTTP_GET, [](AsyncWebServerRequest * request) {

In the browser the interface loads and opens a WebSocket connection to the ESP32. This replies with a list of files in the ESP32 storage – the results of the function below: String filelist_spiffs()

Back in the browser it processes the list with the code below. addSelfieToScreen() is a function that creates objects in the DOM and fills them to create the visible interface. var filelistFromESP32 = message.data; // list of files from ESP32

When all the objects in the interface are created, the populateImgtags() function runs. This uses the fetch() method to request the selfie images from the ESP32. The images are sent from the ESP32 storage to the browser via HTTP with this code: webserver.on("/image", HTTP_GET, [](AsyncWebServerRequest * request) {

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