U109

Unit CAM SKU:U109 Description Unit CAM M5 launched a very cost-effective WiFi camera, using ESP32-WROOM-32E control core + 2MegaPixel image sensor (OV2640) solution on the hardware, using the most simplified design, no extra peripherals. The factory software integrates image transmission firmware, provides image data acquisition, image parameter (white balance, exposure, gain, size and other attributes) adjustment interface, users can directly acquire image data through UART or WiFi, and interact with the camera. Support UIFlow graphical programming call, realize zero development, out-ofthe-box user experience. The compact design and cost performance are suitable for various wireless camera application scenarios. Product Features Simplified design ESP32 control core 2MegaPixel camera (OV2640) UART communication (support image data acquisition, image parameter adjustment and other interfaces) WIFI image transmission Programming platform: ESP-IDF/Arduino/UIFlow Include 1x Unit CAM Applications WiFi camera Remote monitoring Specification Resources Parameter Flash 4M Firmware default communication method UART: 115200bps 8N1 Camera OV2640 Maximum resolution 2MegaPixel Unit CAM firmware default picture transfer rate 12fps YUV(422/420)/YCbCr422, 8-bit compressed data, RGB565/555, 8-/10-bit Raw RGB OV2640 supports output format data OV2640 supports the maximum image transfer UXGA/SXGA: 15fps, SVGA: 30fps, CIF: 60fps rate DFOV 66.5° Net weight 4.7g Gross weight 5.3g Product Size 45*20*12mm Package Size 60*60*15mm Flash Download Unit CAM does not include a program download circuit. When users need to download the ESP32 update program, they can burn the program through an external connection with a USB-TTL downloader. PinMap OV2640 Interface Interface Camera Pin Unit CAM SCCB Clock SIOC IO23 SCCB Data SIOD IO25 Interface Camera Pin Unit CAM System Clock XCLK IO27 Vertical Sync VSYNC IO22 Horizontal Reference HREF IO26 Pixel Clock PCLK IO21 Pixel Data Bit 0 D0 IO32 Pixel Data Bit 1 D1 IO35 Pixel Data Bit 2 D2 IO34 Pixel Data Bit 3 D3 IO5 Pixel Data Bit 4 D4 IO39 Pixel Data Bit 5 D5 IO18 Pixel Data Bit 6 D6 IO36 Pixel Data Bit 7 D7 IO19 Camera Reset RESET IO15 Camera Power Down PWDN -1 Power Supply 3.3V 3V3 3V3 Ground GND GND HY2.0-4P Interface HY2.0-4P Unit CAM RX IO16 TX IO17 5V 5V GND GND LED Unit CAM D1 IO4 LED （blue） Schematic Related Link Datasheet ESP32-WROOM-32E OV2640 Example Arduino Camera UART to Core UIFlow UnitCAM's default factory firmware supports two working modes: UART and WiFi. WiFi mode supports timed shooting and automatically uploads pictures to the M5 cloud and returns to the picture calling interface (URL). Under UART mode, users can use other master devices to obtain picture frames and modify picture parameters through UART communication. Unit CAM UIFlow Block Instructions Unit CAM UIFlow Use Case Press A to enable WiFi connection mode, connect to the designated WiFi, the camera takes pictures at 5s intervals and upload them to the M5 cloud, and press B to obtain the camera Token, and use the cloud image URL generated by the Token to create a QR code. Press C to enable UART connection mode, configure the picture size to be 320*240, and start the picture display thread to continuously refresh the picture to the screen. Unit CAM UIFlow Block function description： - Cloud Mode Functions: #Configure the camera to connect to the specified WiFi Set-unitcam-connect-wifi-ssid #Configure the camera image upload cloud interval Set-unitcam-cloud-mode-upload-interval #Get camera Token Get-unitcam-cloud-token #Get the URL of the camera cloud image Get-unitcam-cloud-image-url - UART Mode Functions: #In UART mode, start the screen display image thread, the default display coordinates are 0,0 Set-unitcam-image-show-in-screen #Set the camera to return the image size Set-unitcam-image-size #Set the image display position Set-unitcam-image-position-x-y - Command: #Switch UART/CLOUD mode Switch-unitcam-mode-to-UART/CLOUD #Set the brightness of the onboard LED of the camera Set-unitcam, led-brightness Micropython API import unit #Create unitcam instance unitcam0 = unit.get(unit.UNITCAM, unit.PORTB) #UART Mode: unitcam0.UART_MODE #WIFI mode: unitcam0.CLOUD_MODE unitcam0.set_mode(unitcam0.UART_MODE) #WiFi mode, configure the camera to connect to the specified WiFi unitcam0.set_wifi('','')  #WiFi mode, configure the camera image upload cloud interval unitcam0.set_upload_time(5) #Get camera token unitcam_token = unitcam0.get_token() #Stitching a fixed domain name field to get the URL of the camera cloud image unicam_image_url ='camera.m5stack.com/timer-cam/image?tok=' + unitcam0.get_token() #UART mode, start the screen display image thread, the default display coordinates are 0,0 unitcam0.set_show(True) #Set the camera to return the image size #unitcam0.SIZE_800_600 #unitcam0.SIZE_640_480 #unitcam0.SIZE_320_240 #unitcam0.SIZE_240_240 #unitcam0.SIZE_160_120 unitcam0.set_image_size(unitcam0.SIZE_320_240) #Set Unit CAM onboard LED brightness value: 0~100 unitcam0.set_led_brightness(0) Video