#11ESP32-CAM開發板帶OV2640攝影模組Ai-Thinker版本

ESP32 -CAM開發板帶OV2640攝影模組Ai-Thinker版本※ 32位元CPU，可作應用處理器※ 主頻 ... 外置4M PSRAM ※ 支持UART/SPI/I2C/PWM/ADC/DAC等接口※ 支持OV2640和OV7670 ...

於www.jmaker.com.tw

#12用Arduino IDE開發ESP32-CAM的視頻播放和人面識別功能

它是安信可公司基於ESP8266 晶片的WiFi模塊。在STM32 FOTA Demo工程里，我們用它來實現無線通信。 「博文精選」PWM ...

於kknews.cc

#13【好物開箱】為低階網路攝影而生的ESP32-CAM - MakerPRO

ESP8266 晶片紅極一時後不免退燒，畢竟ESP8266 規格與功能過於簡單，運用有限的ADC 輸入與軟體模擬的PWM 輸出，能做的應用多半是簡單的感測與操控，並透過 ...

於makerpro.cc

#14ESP32-CAM RC Car with Camera and Mobile Phone Controller

A motor controller needs two free pins so a reverse signal can be sent in addition to a PWM signal to control speed. However after using one pin for steering ...

於robotzero.one

#15ESP32-CAM 學習專區- 泰山高中陳致中學習網站

ESP32 PWM 控制方式(有別於Arduino，因為沒有Analogwrite 指令) ... ESP32-CAM How to enroll faces using images saved in SD card and recognize face automatically ...

於sites.google.com

#16ESP32-CAM AI-Thinker Board – All about GPIO Pins

ESP32 -CAM has integrated with Wi-Fi, Bluetooth and can be used with OV2640 or OV7670 cameras. The ESP32 IC has high-resolution ADCs, SPI, I2C, and UART ...

於microcontrollerslab.com

#17ESP32-CAM (HW-297) WIFI/BT無線攝影機模組 - 廣華電子商城

ESP32 -CAM (HW-297) WIFI/BT無線攝影機模組- Arduino顯示/影像模組, ... 支援連接：UART、SPI、I2C、PWM◎ 支援TF卡：最大支援4G◎ IO埠：9個◎ 串口速率： ...

於shop.cpu.com.tw

#18AI-Thinker ESP32-CAM - Motoduino

描述 · 天線形式: 板載天線。 · SPI Flash: 32Mbit(default) ，最大可達到128Mbit · 支援UART/SPI/I2C/PWM/ADC/DAC · 支援OV2640和OV7670攝像頭，內置閃光燈 · 支援圖片WiFI上傳 ...

於www.motoduino.com

#19ESP32-Camera - Deep Dive - YouTube

於www.youtube.com

#20【飆機器人】ESP32-CAM Development Board(with camera)

你在找的【飆機器人】ESP32-CAM Development Board(with camera)就在露天拍賣，立即購買商品搶免運及 ... Expansion – 16x through-holes with UART, SPI, I2C, PWM ...

於www.ruten.com.tw

#21ESP32 Cam Fails When LED or PWM enabled - ESPHome

Hello, I have an AI Thinker ESP32 Cam that I'm trying to set up with ESPHome. When I include code that enables the onboard flash LED the ...

於community.home-assistant.io

#22ESP32-CAM開發板（物聯網IOT應用） - 飆機器人

支持UART/SPI/I2C/PWM/ADC/DAC等接口. 支持OV2640和OV7670攝像頭，內置閃光燈. 支持圖片WiFi上傳. 支持TF卡. 支持多種休眠模式. 內嵌Lwip和FreeRTOS.

於shop.playrobot.com

#23《德源科技》(含稅)ESP32-CAM 開發板WiFi+藍牙模塊/ 串口轉 ...

德源科技《德源科技》ESP32-CAM Development Board 開發版(with camera) (113990580)｜ ... Supports UART/SPI/I2C/PWM/ADC/DAC; Support OV2640 and OV7670 cameras ...

於seller.pcstore.com.tw

#24ESP32 CAM GPIO 0 pin - RNTLab.com

During flashing GPIO 0 is required to be grounded. After flashing, can I use this pin as a output pin as a PWM pin? Question Tags: ESP32-Cam. 1 Answers.

於rntlab.com

#25ESP32-CAM: The Complete Machine Vision Guide - Arducam

ESP32 -CAM: Machine Vision Tips, Camera Guides and Projects. Published by Lee Jackson on August 17, ... Support interface, UART/SPI/I2C/PWM.

於www.arducam.com

#26ESP32-CAM使用舵机控制旋转-视频流网络服务器（2 轴）

要控制伺服电机，您可以通过发送具有适当脉冲宽度的信号来使用ESP32 的PWM 功能。或者您可以使用库来简化代码。我们将使用ESP32Servo库。

於www.qutaojiao.com

#27ESP32-CAM Development Board - uri=media.digikey

ESP32 -CAM Development Board ... ESP32-CAM is a low-cost ESP32-based development board with onboard camera, ... Support Interface: UART, SPI, I2C, PWM.

於media.digikey.com

#283 Pieces ESP32-CAM WiFi Board ESP32-CAM-MB Micro USB ...

Amazon.com: 3 Pieces ESP32-CAM WiFi Board ESP32-CAM-MB Micro USB to Serial Port CH340G ... Support UART / SPI / I2C / PWM / ADC / DAC and other interfaces

於www.amazon.com

#29Arduino ESP32-CAM for video stream notebook - Stonez56

Recently, I acquired an ESP32-CAM Wi-Fi + Bluetooth + OV2640 camera ... SPI, I2C, PWM; MicroSD: Up to 4GB; Baud Rate: Default 115200 bps ...

於stonez56.blogspot.com

#30求助esp32-cam摄像头和PWM配置冲突问题 - Arduino中文社区

求助esp32-cam摄像头和PWM配置冲突问题看全部 ... 单独摄像头或舵机控制都是成功的，但是把两个整合到一起就冲突了经测试貌似是PWM配置占用了摄像头时钟？？

於www.arduino.cn

#31ESP32-CAM：您應該了解的有關該模塊的知識

Conectividad：WiFi 802.11b / g / n +藍牙4.2與BLE。 支持通過WiFi上傳圖片。 連接：UART，SPI， I2C，而PWM。 它具有9個GPIO引腳。 時鐘頻率： ...

於www.hwlibre.com

#32ESP32-CAM, Camera Module Based on ESP32 - Waveshare

The ESP32-CAM is a small size, low power consumption camera module based on ESP32. ... Supported TF card: up to 4G; Peripheral interface: UART/SPI/I2C/PWM ...

於www.waveshare.com

#33ESP32-CAM 模组概述

ESP32 -CAM Wi-Fi+BT SoC 模组V1.0. Copyright © 2017 Shenzhen Ai-Thinker ... ESP32-CAM 拥有业内极富竞争力的小尺寸摄 ... 支持UART/SPI/I2C/PWM/ADC/DAC 等接口.

於datasheet.lcsc.com

#34ESP32-CAM - ESP32 com Câmera - WiFi - RoboCore

Este é o ESP32-CAM, uma placa muito pequena que une o poderoso módulo ESP32 com uma câmera OV2640 de 2MP e um slot para cartão MicroSD.

於www.robocore.net

#35ESP32-CAM camera development board | 安信可科技

ESP32 -CAM is the latest small size camera module released by Essence. ... Support UART/SPI/I2C/PWM/ADC/DAC and other interfaces.

於docs.ai-thinker.com

#36Selm ESP32-CAM 4M PSRAM 115 200bps Camera WiFi + ...

Buy Selm ESP32-CAM 4M PSRAM 115 200bps Camera WiFi + Bluetooth Module Development Board with Camera Module Antenna,Support 4G TF Card,UART/SPI/I2C/PWM ...

於www.walmart.ca

#37ESP32 Series Datasheet - Espressif Systems

This document provides the specifications of ESP32 series of chips. Document Updates ... 4.1.15 Pulse Width Modulation (PWM) ... Cameras for Video Streaming.

於www.espressif.com

#38ESP32-CAM Development Board with Onboard Camera ...

ESP32 -CAM Development Board with Onboard Camera, Integrated wi-f Electronics Computers Accessories. ... Support Interface: UART, SPI, I2C, PWM

於globalbirdrescue.org

#39ESP32 Cam - Joy-IT

The ESP32-Cam is a compact camera module with low power consumption, multiple interfaces ( SPI / I²C / UART / PWM ) and is therefore suitable for many IoT ...

於joy-it.net

#40ESP32-CAM開發板+ OV2640攝像頭 - 台灣物聯科技

ESP32 -CAM開發板+ OV2640攝像頭、WiFi藍牙開發板、QR識別監控安信可原廠公司貨 ... 支持UART / SPI / I2C / PWM / ADC / DAC; 支持OV2640和OV7670攝像頭，內置閃光燈。

於www.taiwaniot.com.tw

#41找ESP32-CAM PHP相關社群貼文資訊

提供ESP32-CAM PHP相關文章，想要了解更多ESP32-CAM AP、ESP32-CAM ... PWMESP32-CAM upload image to serverESP32-CAM multiple clientsESP32-CAM image ...

於gifttagtw.com

#42ESP32-CAM pinout and equipments. ESP-EYE, AI Thinker ...

Main ESP32-CAM development boards pinout and equipments. ESP-EYE Espressif AI ... IO0, PULL UP, ✓, CLK, Sends a PWM signal at startup.

於diyprojects.io

#43ESP32-CAM攝像頭開發板(OV2640) ESP32 CAM ...

WiFi Module ESP32 serial to WiFi ESP32 CAM Development Board 5V Bluetooth with ... I2C / PWM / ADC / DAC等接口支持OV2640和OV7670相機，內置閃光燈支持圖片WiFi ...

於www.carousell.com.hk

#44高英高級工商職業學校實現以ESP32-CAM 做居家安全監控系統

本研究是一種以「ESP32-CAM」為基礎的居家安全監控系統，在有人. 經過時，可以即時拍照並發送文字及 ... GPIO 支援UART/SPI/I2C/PWM/ADC/DAC 等接口。

於www.kyicvs.khc.edu.tw

#45【物聯網入門教學課程2】ESP32-CAM 打造無線影像串流主機

支持UART/SPI/I2C/PWM/ADC/DAC等接口; 支持OV2640和OV7670攝像頭，內置閃光燈; 支持圖片WiFi上傳; 支持TF卡; 支持多種休眠模式; 內嵌Lwip和FreeRTOS ...

於shop.mirotek.com.tw

#46ESP32-CAM Video Surveillance Robot - Hackster.io

I found that with ESP32-CAM it can be done easily. ... 50, 16); // 50 hz PWM, 16-bit resolution, range from 3250 to 6500.

於www.hackster.io

#47含稅附發票~ ESP32-CAM相機開發平台帶OV2640 ... - 奇摩拍賣

含稅附發票~ ESP32-CAM相機開發平台帶OV2640鏡頭ESP32-CAM-MB USB燒錄底座| ... Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC.

於tw.bid.yahoo.com

#48ESP32-CAM Development Board(with camera) - Seeed Studio

The ESP32-CAM has a very competitive small-size camera module that can operate independently as a minimum system with a footprint of only 27* ...

於www.seeedstudio.com

#49ESP32-CAM開發板測試板WiFi+藍牙模組ESP32串口轉帶 ...

歡迎前來淘寶網實力旺鋪，選購ESP32-CAM開發板測試板WiFi+藍牙模組ESP32串口轉帶OV2640攝像頭， ... 迷你直流馬達PWM調速器3V6 12 24 35V調速開關超小LED調光器5A.

於world.taobao.com

#50標籤: pwm | 我的微控板實驗室

esp32 & 樹莓派& arduino. 歡迎來看我，請善用首頁右上角的分類或標簽或搜尋，或許會有您要的文章。|. 文章標籤. esp32 8 OLED 1 oled 2 bmp280 5 ...

於blairan.github.io

#51ESP32-CAM結合tfjs PoseNet控制繼電器- Arduino.Taipei

ESP32 -CAM結合tfjs PoseNet控制繼電器開：兩手腕分別在兩耳旁ON: Put your ... 540用的碳刷電變很便宜，然後用PWM分開控制二組電變就有差速，恆龍那種坦克至少要用動力 ...

於m.facebook.com

#52[Arduino] 016 | ESP32-CAM 硬體連接與程式寫入@ 門外漢的筆記

1.硬體連接:ESP32-CAM 手邊這片是不帶有USB轉UART的板子, 所以需要再另外接一塊USB轉UART TTL, 另外這塊沒有支援一鍵燒錄, 因此程式上傳較麻煩. 2.

於frank1025.pixnet.net

#53使用Python接收多支ESP32Cam影像 - CH.Tseng

在沒有對接IO0與GND的情況下，接上電源ESP32Cam便會自動執行燒錄的程式。 ... https://diarmuid.ie/blog/pwm-exponential-led-fading-on-arduino-or ...

於chtseng.wordpress.com

#54ESP32 - 维基百科，自由的百科全书

ESP32 是一系列低成本，低功耗的單晶片微控制器，集成了Wi-Fi和雙模藍牙。 ESP32系列採用Tensilica ... 紅外線傳輸; 電機PWM · LED PWM, 多達16個通道; 霍爾感應器.

於zh.wikipedia.org

#55【文章推薦】通過ip地址訪問ESP32-CAM 相機- 碼上快樂

b g n Wi Fi BT SoC模塊低功耗位CPU，也可以為應用處理器服務時鍾速度高達MHz，總計計算功率高達DMIPS 內置KB SRAM，外部MPSRAM 支持UART SPI I C PWM ADC D.

於www.codeprj.com

#56Make an LED fade using a PWM signal on the ESP32 - Tech ...

The PWM channel is not the same as a physical pin. The ESP32 contains 16 independent channels. Each of those can be assigned to any PWM-capable pin. This means ...

於techexplorations.com

#57WT-ESP32-CAM / WiFi + Bluetooth Camera Module ...

WT-ESP32-CAM Description WT-ESP32-CAM is a small-size camera development board ... WI-FI picture upload speed is fast; support UART/SPI/I2C/PWM/ADC/DAC and ...

於www.elecrow.com

#581-1 ESP32 開發板概述

OV2640 攝影鏡頭模組，這款ESP32 開發板即所謂的ESP32-CAM，它是由 ... 顆PCA9685 可以輸出16 通道的PWM 信號，可以用來驅動16 個SG90 舵.

於epaper.gotop.com.tw

#59ESP32-Cam-CH340 Development Board - Elektor

... SPI, I2C, PWM; Supporting TF Card: Maximum Supporting 4G; IO port: 9; Serial port rate: default 115200 BPS; Image output format: JPEG (OV2640 only), ...

於www.elektor.com

#60模块型号- 封装

ESP32CAM. • 支援python開發環境搭建 esp32cam. 支援windows 開發環境搭建. ESP32CAM. •支援UART/SPI/I2C/. PWM/ADC/DACA É. • 支援LINUX開發環境搭建. ESP32CAM.

於images.100y.com.tw

#61Connecting AI-Thinker ESP32-cam to Adafruit PCA9685 servo ...

Connecting AI-Thinker ESP32-cam to Adafruit PCA9685 servo controller board ... it uses the default address 0x40 Adafruit_PWMServoDriver pwm ...

於stackoverflow.com

#62VSCode+PlatformIO+Arduino ESP32-CAM 摄像遥控小车

支持UART/SPI/I2C/PWM/ADC/DAC等接口支持OV2640和OV7670摄像头，内置闪光灯支持图片WiFI上传支持TF卡支持多种休眠模式。 内嵌Lwip和FreeRTOS 支持STA/AP/ ...

於blog.csdn.net

#63Basics Project 084d AI-Thinker ESP32-CAM Pinout Guide

Tags: Arduino, Arduino Uno, Ai-Thinker, ESP32-CAM, Development Board with camera, ... Supports UART/SPI/I2C/PWM/ADC/DAC; Support OV2640 and OV7670 cameras ...

於acoptex.com

#64「電路DIY」ESP32-CAM上的視頻流伺服器 - 資訊咖

支持UART/SPI/I2C/PWM/ADC/DAC; 支持OV2640和OV7670攝像頭，並內置閃光燈; 支持圖像WiFI上傳; SD卡插槽 ...

於inf.news

#65esp32 cam digital low latency fpv | BestOfCpp

esp32 -cam-fpv ... This project uses a modified esp-camera component running on an AI Thinker board to send low-latency mjpeg video to a Raspberry ...

於bestofcpp.com

#66ESP32 Camera Component - ESPHome

Instructions for setting up the ESP32 Cameras in ESPHome. ... If you need PWM (via the ledc platform) you need to manually specify a channel there (with the ...

於esphome.io

#67ESP32-CAM WiFi + bluetooth Camera Module ... - botnroll.com

ESP32 -CAM can be widely used in various IoT applications. It is suitable for home smart devices, ... Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC.

於www.botnroll.com

#68ESP32-CAM: 連接ILI9341液晶螢幕@ blog - 隨意窩

esp32 -cam的範例CameraWebServer要透過電腦或手機的瀏覽器觀看影像。 ... If the LEDs are to be // driven with a PWM signal or turned OFF/ON then this must be ...

於blog.xuite.net

#69ESP32基于Micropython制作的PWM驱动器_小小曹的博客

针对esp32 cam搭建micropython的方法，我是小白，这个文章只针对小白，对于大佬级人物请直接略过。资源内包括：FTDI驱动,esptool-2.8 源码，还有安装esptool所依赖的两 ...

於www.cxyzjd.com

#70串流stream及物件辨識object detection @ 夜市小霸王:: 痞客邦

ESP32 -CAM(ardunio)拍照auto take picture、串流stream及物件辨識object detection @ 夜市小霸王:: 痞客邦:: ESP32-CAM是ESP32為主版並外掛相機，ESP32本身就已經內建WIFI ...

於www.pinterest.com

#71KS5001 ESP32-CAM Development Board WiFi+Bluetooth ...

Compatible with UART/SPI/I2C/PWM/ADC/DAC ports. Support OV2640 and OV7670 cameras，with a built-in flashing light. Support TF card, multiple ...

於wiki.keyestudio.com

#72Video Streaming and Facial Recognition with ESP32-CAM ⋆

於shores.dev

#73Arduino ESP32-CAM 學習之旅① 認識ESP32-CAM，搭建環境

Arduino ESP32-CAM 學習之旅① 認識ESP32-CAM，搭建環境，執行第一個程式. ... UART/SPI/I2C/PWM/ADC/DAC; Support OV2640 and OV7670 cameras, ...

於tw511.com

#74ESP32-CAM Development Board(with camera) | Makerfabs

The ESP32-CAM has a very competitive small-sized camera module that can operate ... Supports UART/SPI/I2C/PWM/ADC/DAC; Support OV2640 and OV7670 cameras, ...

於www.makerfabs.com

#75HK-ESP32-CAM-MB - 弘科科技

HK-ESP32-CAM-MB是弘科为HK-ESP32-CAM小型相机模块设计的一款底座。 HK-ESP32-CAM-MB配备USB转串口接口，方便用户烧录程序。 ... 支持UART/SPI/I2C/PWM/ADC/DAC等接口.

於www.hpcba.com

#76ESP32-CAM WiFi Module ESP32 Serial to WiFi ... - Daraz.pk

Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC.Support OV2640 and OV7670 cameras, built-in flash. The ESP32-CAM is a small-sized camera module.

於www.daraz.pk

#77ESP32 Web Server PWM based LED Control - IoT Starters

ESP32 Web Server PWM based LED Control. In this tutorial, we are going to control the light intensity of an LED with the help of ESP32 chip.

於www.iotstarters.com

#78ESP32CAM and PWM - Need Help With My Project - Blynk ...

Hello I have an ESP32Cam module, Ai-Thinker version, I want to connect a servo to it, but in Blynk I cannot choose only Virtual on the ...

於community.blynk.cc

#79Ai-Thinker ESP32-CAM WiFi + Ble Camera Module ESP32 ...

Ai-Thinker ESP32-CAM WiFi + Ble Camera Module ESP32 Development Board ESP32 wifi, US $ 5.45 - 5.85 ... Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC.

於ai-thinker.en.alibaba.com

#80Bluetooth Module Development Board with ... - iResearchNet

UART/SPI/I2C/PWM Interface: Electronics,ESP32-CAM 4M PSRAM 115 200bps Camera WiFi + Bluetooth Module Development Board with Camera Module Antenna,Support 4G ...

於psychology.iresearchnet.com

#81ESP32 CAM WiFi + bluetooth Camera Module - Vector Four ...

SP32-CAM WiFi Bluetooth Board DC 5V Dual-core Wireless with OV2640 Camera TF Card ... external 4M PSRA; Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC ...

於vector4engineering.com

#82ESP32-CAM Development Board(with camera) Downloaded ...

Home / Wireless & IoT / Wi-Fi / Espressif / ESP32-CAM Development Board(with ... was designed in an Arduino Uno form factor, with a ESP32 module on board.

於static6.arrow.com

#83Ai-Thinker ESP32-CAM:Problems using Pin 13 as input after ...

When that is done it should send 2 PWM signals (using 2 pins total) and an activation signal (1 pin). I'm able to read from pin 13 with digital ...

於forum.arduino.cc

#84ESP32-CAM Development Board Australia - Core Electronics

Introduction ESP32-CAM is a low-cost ESP32-based development board with onboard camera, small in size. It is an ideal solution for IoT application, ...

於core-electronics.com.au

#85LANDZO ESP32 CAM Module Development with Camera ...

Make sure this fits by entering your model number. Esp32 CAM module; Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC. ||| ...

於castleevents.com

#86DIY ESP32 Camera Motor Shield - Wifi Camera Robot Car

於www.instructables.com

#87ESP32-CAM Development Board with onboard camera

Ai Thinker ESP32-CAM Development Board with onboard camera, integrated wi-fi and bluetooth, ideal solution for ... Support Interface: UART, SPI, I2C, PWM.

於www.dfrobot.com

#88BUY Ai-Thinker's Original ESP32 CAM with AF2569 Camera ...

BUY Original Ai-Thinker's ESP32 CAM Development Board WiFi+Bluetooth with ... as UART/SPI/I2C/PWM/ADC/DAC; Support OV2640 and OV7670 cameras with built-in ...

於robu.in

#89ESP32-CAM, Camera Module Based on ESP32 - PiShop.ca

The ESP32-CAM is a small size, low power consumption camera module based on ESP32. ... Supported TF card: up to 4G; Peripheral interface: UART/SPI/I2C/PWM ...

於www.pishop.ca

#90Original Ai Thinker ESP32 CAM, Camera Module Based on ...

The ESP32-CAM is a small size, low power consumption camera module based on ESP32. ... Supported TF card: up to 4G; Peripheral interface: UART/SPI/I2C/PWM ...

於www.aliexpress.com

#91ESP32 CAM Board – How to begin and blink a LED - Geekering

The ESP32 chip is so powerful that it can even process images. It also includes I2C, SPI, UART communications as well as PWM and DAC outputs.

於www.geekering.com

#92Esp32 mcpwm

Aug 22, 2018 · 而ESP32 内部自带专给电机产生pwm的外设MCPWM。而我也是使用两对pwm分别驱动两个马达。 ... Oct 12, 2020 · IP-камера на базе ESP32 CAM.

於kiakaha.ca

#93ESP32-CAM Wireless IoT Vision Development Board - Nerokas

The ESP32-CAM has a very competitive small-size camera module that can operate independently as a ... Expansion – 16x through-holes with UART, SPI, I2C, PWM ...

於store.nerokas.co.ke

#94ESP32-CAM Development Board with OV2640 Camera - X2 ...

Supports UART/SPI/I2C/PWM/ADC/DAC; Support OV2640 and OV7670 cameras, Built-in Flash lamp; Support image WiFi upload; Supports multiple sleep modes ...

於x2robotics.ca

#95ESP32 Cam & EZB - Firmware - Synthiam

Controller supports WiFi connectivity using TCP between your computer with ARC. PWM Duty on digital ports. Digital ports can output a PWM ...

於synthiam.com

#96ESP32-CAM - Video Streaming and Face Recognion in a tiny ...

Supports UART/SPI/I2C/PWM/ADC/DAC; Support OV2640 and OV7670 cameras, built-in flash lamp; Support image WiFI upload; Support TF card ...

於www.elementzonline.com

#97ESP32 PWM Tutorial: Controlling the Brightness of LED

Pulse Width Modulation (PWM) is a technique that varies the width of a pulse while keeping the wave frequency constant. The PWM technique ...

於circuitdigest.com