Differences

This shows you the differences between two versions of the page.

--- esp32-cam [2018/12/19 21:39] – [getting a pic] yair
+++ esp32-cam [2020/01/04 18:48] – [ESP32 stream camera modules] yair
@@ Line 4: / Line 4: @@
 ===== ESP32 stream camera modules  =====
-at their core this modules uses external RAM ([[#psram]] to buffer an ov2640 camera module that does jpeg at 10fps on-board. the external ram is not strictly neseccery, but going fwd its the right way to go, beware of [[#M5Stack|modules]] without one
+at their core this modules uses external RAM ([[#psram]] to buffer an ov2640 camera module that does jpeg at 10fps on-board. the external ram is not strictly necessary, but going fwd its the right way to go, beware of [[#M5Stack|modules]] without one
+Note2: new modules in market are updated, make sure they carry [[#PSRAM]] chip
 note: **current [[#M5Stack]] modules DO NOT come with the [[#PSRAM]] chip** and are limited in performance and by heat issues.\\
-while the [[#M5Stack]] doesnt have the #PSRAM, out of the box it outputs a working image stream. unlike the [[#ESP32-CAM]]
-modules tested\\
+**modules tested**\\
-[[#TTGO T-Journal]] - comes with arduino support, works out of the box\\
+[[#ESP32-CAM]] - <del>glitching ATM</del> works, but lacks heatsink\\
-[[#M5Stack]] - works out of box, lacks PSRAM\\
+[[#TTGO T-Journal]] - comes with arduino support, works out of the box, has a heatsink on the esp32.\\
-[[#ESP32-CAM]] - glitching ATM\\
+[[#M5Stack]] - works out of box, lacks PSRAM, lacks heatsink\\
-untested\\
+**yet untested**\\
 [[#ESP32-wrover-kit]]\\
 [[#ESP32-WROVER-B]]\\
-[[#TTGO T8]]
+[[#TTGO T8]]\\
+[[#esp-eye]] - [[https://www.espressif.com/en/products/hardware/esp-eye/overview|link]]
+==== ESP32-CAM ====
+{{ :pasted:20181128-003945.png?direct&400}}
+[[https://shop72165205.world.taobao.com|AI-thinker]] has
+ [[https://github.com/donny681/ESP32_CAMERA_QR|released]] a QR-code reading example.
+<html>
+<ul><li>Wireless Module- ESP32-S WiFi 802.11 b/g/n + Bluetooth 4.2 LE module with PCB antenna, u.FL connector, 32Mbit SPI flash, 4MBit PSRAM</li>
+<li>External Storage – micro SD card slot <strong>up to 4GB</strong></li>
+<li>Camera
+<ul><li>FPC connector</li>
+<li>Support for OV2640 (sold with board) or OV7670 cameras</li>
+<li>Image Format – JPEG(&nbsp;OV2640 support only ), BMP, grayscale</li>
+<li>LED flash light</li>
+</ul></li>
+<li>Expansion – 16x through-holes with UART, SPI, I2C, PWM</li>
+<li>Misc – Reset button</li>
+<li>Power Supply – 5V via pin header</li>
+<li>Power Consumption
+<ul><li>Flash LED off – 180mA @ 5V</li>
+<li>Flash LED on to maximum brightness- 310mA @ 5V</li>
+<li>Deep-sleep – 6mA @ 5V min.</li>
+<li>Modem-sleep – 20mA @ 5V min.</li>
+<li>Light-sleep – 6.7mA @ 5V min.</li>
+</ul></li>
+<li>Dimensions – 40.5 x 27 x 4.5 mm</li>
+<li>Weight- 10 grams</li>
+<li>Temperature Range – Operating: -20 ℃ ~ 85 ℃; storage: -40 ℃ ~ 90 ℃ @ &lt;&nbsp;90%RH</li>
+</ul>
+</html>
+spec gathered and formatted by [[https://www.cnx-software.com/2018/09/30/esp32-cam-esp32-camera-board/|cnx-software]], check his [[https://www.facebook.com/cnxsoft|feed]] for the latest in embedded open designs
+interesting, might be a seeedstudio design, but [[https://www.seeedstudio.com/ESP32-CAM-Development-Board(with-camera)-p-3153.html|abandoned]] [[https://i.imgur.com/yh3N2eL.png|(cache)]].
+  *[[https://item.taobao.com/item.htm?id=573698917181|AI-thinker]] offical store on taobao
+  *[[https://www.aliexpress.com/wholesale?SearchText=ESP32-CAM|ALIexpress sellers]]
+  *[[https://coolcomponents.co.uk/collections/cameras/products/esp32-cam-development-boardwith-camera|UK seller]]
+  *{{:pasted:20181219-222557.png?linkonly|pinout}}
+  *{{ :ESP32_CAM_V1.6.pdf|schematics}}
+  *{{ :esp32-cam.pdf |datasheet (chinese)}} - from wiki
+  *[[http://wiki.ai-thinker.com/esp32-cam|wiki-page]] - lots of time offline
+=== gettting it going ===
+  #install esp-idf on system
+  https://docs.espressif.com/projects/esp-idf/en/latest/get-started/#get-esp-idf
+  #get esp-who repo, it will also pull submodule esp32-camera component
+  git clone --recursive https://github.com/espressif/esp-who.git
+  #if you didnt pull the submodules run  $ git submodule update --init
+  cd esp/esp-who/examples/single_chip/camera_web_server/
+  # change camera module to ai-thinker in sdkconfig
+  # also change port to /dev/ttyUSB0 or whatever is yours.
+  #
+  # Camera Pins
+  #
+  CONFIG_CAMERA_MODEL_WROVER_KIT=
+  CONFIG_CAMERA_MODEL_M5STACK_PSRAM=
+  CONFIG_CAMERA_MODEL_AI_THINKER=y
+  CONFIG_CAMERA_MODEL_CUSTOM=
+  CONFIG_ESP_FACE_DETECT_ENABLED=y
+  CONFIG_ESP_FACE_RECOGNITION_ENABLED=y
+  #now compile and flash
+  make menuconfig
+  make flash
+{{:pasted:20181219-220415.png}}
 ==== M5Stack ====
-M5Stack host it's [[https://m5stack.github.io/m5-docs/#/en/product_documents/units/unit_m5camera|product page]] on github and on [[http://m5stack.com/|their]] site.
+[[http://m5stack.com/|M5Stack]] host it's [[https://m5stack.github.io/m5-docs/#/en/product_documents/units/unit_m5camera|product page]] on github .
 M5Stack warn not to use the cam module for extended time as "{{m5camera_02.jpg?linkonly|it might over heat"}}!\\
@@ Line 81: / Line 154: @@
   *[[https://www.amazon.es/gp/product/B07F2DNX6M/r| ES seller AMZ]] -19eu
+===getting image===
+comes with working demo code: [[https://github.com/m5stack/esp32-cam-demo|github]]
-==== ESP32-CAM ====
+watch their github [[https://github.com/m5stack/m5stack-cam-psram|m5stack-cam-psram]]
-{{ :pasted:20181128-003945.png?direct&400}}
-[[https://shop72165205.world.taobao.com|AI-thinker]] has
- [[https://github.com/donny681/ESP32_CAMERA_QR|released]] a QR-code reading example.
+====esp-who====
+  make defconfig
+  make flash
+<code>
+I (309) boot: Loaded app from partition at offset 0x10000
+I (309) boot: Disabling RNG early entropy source...
+E (312) spiram: Expected 4096KiB chip but found 8192KiB chip. Bailing out..
+E (319) cpu_start: Failed to init external RAM!
+</code>
+==== TTGO T-Journal  ====
-<html>
+{{ :pasted:20181129-231505.png?400&direct}} {{ :pasted:20181129-231342.png?111&direct}}
-<ul><li>Wireless Module- ESP32-S WiFi 802.11 b/g/n + Bluetooth 4.2 LE module with PCB antenna, u.FL connector, 32Mbit SPI flash, 4MBit PSRAM</li>
-<li>External Storage – micro SD card slot <strong>up to 4GB</strong></li>
-<li>Camera
-<ul><li>FPC connector</li>
-<li>Support for OV2640 (sold with board) or OV7670 cameras</li>
-<li>Image Format – JPEG(&nbsp;OV2640 support only ), BMP, grayscale</li>
-<li>LED flash light</li>
-</ul></li>
-<li>Expansion – 16x through-holes with UART, SPI, I2C, PWM</li>
-<li>Misc – Reset button</li>
-<li>Power Supply – 5V via pin header</li>
-<li>Power Consumption
-<ul><li>Flash LED off – 180mA @ 5V</li>
-<li>Flash LED on to maximum brightness- 310mA @ 5V</li>
-<li>Deep-sleep – 6mA @ 5V min.</li>
-<li>Modem-sleep – 20mA @ 5V min.</li>
-<li>Light-sleep – 6.7mA @ 5V min.</li>
-</ul></li>
-<li>Dimensions – 40.5 x 27 x 4.5 mm</li>
-<li>Weight- 10 grams</li>
-<li>Temperature Range – Operating: -20 ℃ ~ 85 ℃; storage: -40 ℃ ~ 90 ℃ @ &lt;&nbsp;90%RH</li>
-</ul>
-</html>
-spec gathered and formatted by [[https://www.cnx-software.com/2018/09/30/esp32-cam-esp32-camera-board/|cnx-software]], check his [[https://www.facebook.com/cnxsoft|feed]] for the latest in embedded open designs
-interesting, might be a seeedstudio design, but [[https://www.seeedstudio.com/ESP32-CAM-Development-Board(with-camera)-p-3153.html|abandoned]] [[https://i.imgur.com/yh3N2eL.png|(cache)]].
-  *[[https://item.taobao.com/item.htm?id=573698917181|AI-thinker]] offical store on taobao
+  *Chipset ESPRESSIF-ESP32-PCIO-D4 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor
-  *[[https://www.aliexpress.com/wholesale?SearchText=ESP32-CAM|ALIexpress sellers]]
+  *FLASH QSPI flash/SRAM, up to 4 x 16 MB
-  *[[https://coolcomponents.co.uk/collections/cameras/products/esp32-cam-development-boardwith-camera|UK seller]]
+  *SRAM 520 kB SRAM
-  *{{:pasted:20181209-223036.png?linkonly|pinout}}
+  *dispaly 0.91 SSD1306
-  *{{ :esp32-cam.pdf |datasheet (chinese)}} - from wiki
+  *USB to TTL CP2104
-  *[[http://wiki.ai-thinker.com/esp32-cam|wiki-page]]
+  *Camera OV2640  2Megapixel
+  *Steering engine analog servo (PWM?)
+  *working voltage 2.3V-3.6V
+  *working current about 160mA
+  *size 64.57mm*23.98mm
+  *Power Supply USB 5V/1A
+  *charging current 1A - battery 3.7V lithium battery
+[[https://www.aliexpress.com/item/TTGO-T-Journal-ESP32-Camera-esp32-OV2640-Camera-Module-Development-Board-SAM-Wifi-3dbi-Antenna/32954902322.html|store]]\\ [[https://github.com/LilyGO/ESP32-Camera|github]]
+===getting image===
+the [[#TTGO T-Journal]] comes with arduino support [[https://github.com/LilyGO/ESP32-Camera|github repo]]
+configure arduino with esp32 support\\
+using the board type **ESP32 Dev Module**
+  unzip Downloads/esp8266-oled-ssd1306-master.zip -d ~/Arduino/libraries/
+  cd ~/Arduino/libraries/
+  git clone https://github.com/LilyGO/ESP32-Camera
+  #(re)open arduino
+  File>Examples>Examples from customs libraries>ESP32 camera>ESP32_Station_Cam.ino
+the TTGO is the best one. \\
+comes pre-flashed out of the box and was able to reflash with their example. \\
+missing are schematics.
+click image for the mjpeg_stream output \\
+{{:pasted:smartselect_20181218-125103_chrome.gif?direct&300|}}
+===getting image -arduino===
+  git clone https://github.com/espressif/arduino-esp32.git ~/Documantes/Arduino/hardware/espressif/esp32
+  git submodule update --init --recursive
+  #Open [ARDUINO_SKETCHBOOK_DIR]/hardware/espressif/esp32/tools and double-click get.exe
+  #going for File>Examples>esp32>camera
+i added the pinout for the T-journal
+<code>//https://github.com/espressif/esp-who/issues/2#issuecomment-435813085
+// Select camera model
+#define CAMERA_MODEL_TTGO_Tjournal
+#elif defined(CAMERA_MODEL_TTGO_Tjournal)
+#define PWDN_GPIO_NUM 0
+#define RESET_GPIO_NUM 15
+#define Y2_GPIO_NUM 17
+#define Y3_GPIO_NUM 35
+#define Y4_GPIO_NUM 34
+#define Y5_GPIO_NUM 5
+#define Y6_GPIO_NUM 39
+#define Y7_GPIO_NUM 18
+#define Y8_GPIO_NUM 36
+#define Y9_GPIO_NUM 19
+#define XCLK_GPIO_NUM 27
+#define PCLK_GPIO_NUM 21
+#define HREF_GPIO_NUM 26
+#define VSYNC_GPIO_NUM 22
+#define SIOD_GPIO_NUM 25
+#define SIOC_GPIO_NUM 23
+</code>
+  #push G32 on upload start
+{{:pasted:20181224-142203.png?400}}
+==== ESP32-wrover-kit ====
+{{:pasted:20181129-215820.png?400&direct}}
+**do not use for for new designs** (see comment on wrover-b bellow)
+video released by espressif shows pattern detection capabilities.[[https://github.com/espressif/esp-who|github]] \\
+it uses the [[https://www.espressif.com/en/products/hardware/esp-wrover-kit/overview|esp-wrover-kit]]
+  *Dual core 240 MHz CPU;
+  *with 4 MB SPI PSRAM (Pseudo static RAM);
+  *Built-in USB-JTAG Debugger;
+  *3.2” SPI LCD panel;
+  *Micro-SD card interface
+  *VGA camera interface
+  *I/O expansion
+  *DOOM enabled {{https://i.imgur.com/8o7uSqZ.png?linkonly|(jpg)}}
+  *[[https://www.adafruit.com/product/3384|adafruit]]
+  *[[https://www.aliexpress.com/item/52Pi-ESP-WROVER-KIT-ESP32-Development-Board-With-WiFi-Wireless-Bluetooth-and-3-2-Inch-LCD/32857373727.html|aliexpress seller]] and his [[http://wiki.52pi.com/index.php/ESP32_WROVER_KIT_SKU:_EP-0090|WiKi]]
+  *[[http://iot-bits.com/getting-started-with-esp32-esp-wrover-kit/|getting started]] guide by io-bits
+{{testing_the_face_detection_on_esp32.-10157127307648888.mp4}}
+==== ESP32-WROVER-B ====
+{{:pasted:20181129-222139.png?400&direct}}
+the ESP32-WROVER-B Module has the 8MB PSRAM but lacks some peripherals.\\ note the diff between qrover and wrover-b, which has the extra 8MB. better not use less then 4MB.
+  * official [[https://www.espressif.com/sites/default/files/documentation/esp32-wrover-b_datasheet_en.pdf|datasheet]]
+  * electrodragon offers a few [[https://www.electrodragon.com/w/Category:ESP32#Specification_and_ordering_information/|configurations]], and the offical [[https://www.espressif.com/sites/default/files/documentation/espressif_products_ordering_information_en.pdf|list]]
+==== TTGO T8 ====
+the T8 has the PSRAM with all the peripherals but the camera connector. [[https://pt.aliexpress.com/item/TTGO-T8-V1-7-ESP32-4-mb-PSRAM-CART-O-TF-3D-ANTENA-WiFi-bluetooth-ESP32/32851423415.html|store]]
+{{:pasted:20181129-234827.png?200&direct}}
+==== PSRAM ====
+the PSRAM is "a cheaper cost-per-bit cache and buffered memory solution" [[https://www.arrow.com/en/categories/memory/memory-chips/psram|(link)]]
+{{:pasted:20181202-004212.png}}
+from ESP-PSRAM64 [[https://www.espressif.com/sites/default/files/documentation/esp-psram64_esp-psram64h_datasheet_en.pdf|datasheet]]
+"the ESP32 SDK at the moment only supports the ESP-PSRAM32 chip." [[https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/external-ram.html|(doc)]], [[https://esp32.com/viewtopic.php?f=2&t=826&p=26656|post#1]].[[https://www.esp32.com/viewtopic.php?f=13&t=2031&sid=7f1eafe0803c6ef34e981777ceaebd09&start=90|post#2]]
+note: **current [[#M5Stack]] modules DO NOT come with the PSRAM chip** and are limited in performance and by heat issues. TBD {{:pasted:20181202-003301.png?direct&750|check your board}}
+==== camera and lenses ====
+OV2640 {{:ov2640ds.pdf|datasheet}}
+an earlier  [[https://github.com/igrr/esp32-cam-demo|source code]] shows how to stream MJPEG to a browser.
+in video is an example of that with a few ov modules with ribbon connectors
+{{youtube>iw5b26QmWbE?medium}}
+here is a [[https://www.reddit.com/r/esp32/comments/92423z/m5stack_esp32_camera/ea7yt4v/|reddit]] comment about working with the ov2640 and the arduino platform
+relate to all the above.
+[[https://hbvcamhuibervision.pt.aliexpress.com/store/3018090|{{:pasted:20181130-000246.png}}]]
+==== compare ====
+ESP32-CAM
+  *SDcard storage
+M5Satck
+  * serial to usb
+  * charging circuit
+  * charge connector
+  * grove connector
+  * form factor
+  * no PSRAM ?!
+  * [[https://github.com/m5stack/M5-Schematic/blob/master/Units/m5camera/hardware_diff_with_ESP32CAM_M5Camera.md|pinout diff with esp32-cam]]
+==== getting a pic - superseded ====
+with help of [[https://github.com/me-no-dev|me-no-dev]] i got the [[#esp32-cam]] working!, below is just all i tried before [[https://github.com/espressif/esp32-camera/issues/7?fbclid=IwAR3BXgsdScCM9Wj6Eb3I6QzCK5oHZu9WrEj6_W1BYUo9wUVXQFzRAudU8pE#issuecomment-448755310|this nudge]] i got.
+----
-==== getting a pic ====
 TLDR: this module comes with a bootloader, but no app. and flashing one didn't get me the results i can work with ATM.\\
@@ Line 799: / Line 995: @@
 I (2612) camera: got ip:192.168.0.89
 </code></hidden>
-====esp-who====
-  make defconfig
-  make flash
-<code>
-I (309) boot: Loaded app from partition at offset 0x10000
-I (309) boot: Disabling RNG early entropy source...
-E (312) spiram: Expected 4096KiB chip but found 8192KiB chip. Bailing out..
-E (319) cpu_start: Failed to init external RAM!
-</code>
-==== TTGO T-Journal  ====
-{{ :pasted:20181129-231505.png?400&direct}} {{ :pasted:20181129-231342.png?111&direct}}
-  *Chipset ESPRESSIF-ESP32-PCIO-D4 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor
-  *FLASH QSPI flash/SRAM, up to 4 x 16 MB
-  *SRAM 520 kB SRAM
-  *dispaly 0.91 SSD1306
-  *USB to TTL CP2104
-  *Camera OV2640  2Megapixel
-  *Steering engine analog servo (PWM?)
-  *working voltage 2.3V-3.6V
-  *working current about 160mA
-  *size 64.57mm*23.98mm
-  *Power Supply USB 5V/1A
-  *charging current 1A - battery 3.7V lithium battery
-[[https://www.aliexpress.com/item/TTGO-T-Journal-ESP32-Camera-esp32-OV2640-Camera-Module-Development-Board-SAM-Wifi-3dbi-Antenna/32954902322.html|store]]\\ [[https://github.com/LilyGO/ESP32-Camera|github]]
-===getting image===
-the [[#TTGO T-Journal]] comes with arduino support [[https://github.com/LilyGO/ESP32-Camera|github repo]]
-configure arduino with esp32 support\\
-using the board type **ESP32 Dev Module**
-  unzip Downloads/esp8266-oled-ssd1306-master.zip -d ~/Arduino/libraries/
-  cd ~/Arduino/libraries/
-  git clone https://github.com/LilyGO/ESP32-Camera
-  #(re)open arduino
-  File>Examples>Examples from customs libraries>ESP32 camear>ESP32_Station_Cam.ino
-the TTGO is the best one. \\
-comes pre-flashed out of the box and was able to reflash with their example. \\
-missing are schematics.
-click image for the mjpeg_stream output \\
-{{:pasted:smartselect_20181218-125103_chrome.gif?direct&300|}}
-==== ESP32-wrover-kit ====
-{{:pasted:20181129-215820.png?400&direct}}
-**do not use for for new designs** (see comment on wrover-b bellow)
-video released by espressif shows pattern detection capabilities.[[https://github.com/espressif/esp-who|github]] \\
-it uses the [[https://www.espressif.com/en/products/hardware/esp-wrover-kit/overview|esp-wrover-kit]]
-  *Dual core 240 MHz CPU;
-  *with 4 MB SPI PSRAM (Pseudo static RAM);
-  *Built-in USB-JTAG Debugger;
-  *3.2” SPI LCD panel;
-  *Micro-SD card interface
-  *VGA camera interface
-  *I/O expansion
-  *DOOM enabled {{https://i.imgur.com/8o7uSqZ.png?linkonly|(jpg)}}
-  *[[https://www.adafruit.com/product/3384|adafruit]]
-  *[[https://www.aliexpress.com/item/52Pi-ESP-WROVER-KIT-ESP32-Development-Board-With-WiFi-Wireless-Bluetooth-and-3-2-Inch-LCD/32857373727.html|aliexpress seller]] and his [[http://wiki.52pi.com/index.php/ESP32_WROVER_KIT_SKU:_EP-0090|WiKi]]
-  *[[http://iot-bits.com/getting-started-with-esp32-esp-wrover-kit/|getting started]] guide by io-bits
-{{testing_the_face_detection_on_esp32.-10157127307648888.mp4}}
-==== ESP32-WROVER-B ====
-{{:pasted:20181129-222139.png?400&direct}}
-the ESP32-WROVER-B Module has the 8MB PSRAM but lacks some peripherals.\\ note the diff between qrover and wrover-b, which has the extra 8MB. better not use less then 4MB.
-  * official [[https://www.espressif.com/sites/default/files/documentation/esp32-wrover-b_datasheet_en.pdf|datasheet]]
-  * electrodragon offers a few [[https://www.electrodragon.com/w/Category:ESP32#Specification_and_ordering_information/|configurations]], and the offical [[https://www.espressif.com/sites/default/files/documentation/espressif_products_ordering_information_en.pdf|list]]
-==== TTGO T8 ====
-the T8 has the PSRAM with all the peripherals but the camera connector. [[https://pt.aliexpress.com/item/TTGO-T8-V1-7-ESP32-4-mb-PSRAM-CART-O-TF-3D-ANTENA-WiFi-bluetooth-ESP32/32851423415.html|store]]
-{{:pasted:20181129-234827.png?200&direct}}
-==== PSRAM ====
-the PSRAM is "a cheaper cost-per-bit cache and buffered memory solution" [[https://www.arrow.com/en/categories/memory/memory-chips/psram|(link)]]
-{{:pasted:20181202-004212.png}}
-from ESP-PSRAM64 [[https://www.espressif.com/sites/default/files/documentation/esp-psram64_esp-psram64h_datasheet_en.pdf|datasheet]]
-"the ESP32 SDK at the moment only supports the ESP-PSRAM32 chip." [[https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/external-ram.html|(doc)]], [[https://esp32.com/viewtopic.php?f=2&t=826&p=26656|post#1]].[[https://www.esp32.com/viewtopic.php?f=13&t=2031&sid=7f1eafe0803c6ef34e981777ceaebd09&start=90|post#2]]
-note: **current [[#M5Stack]] modules DO NOT come with the PSRAM chip** and are limited in performance and by heat issues. TBD {{:pasted:20181202-003301.png?direct&750|check your board}}
-==== camera and lenses ====
-OV2640 {{:ov2640ds.pdf|datasheet}}
-an earlier  [[https://github.com/igrr/esp32-cam-demo|source code]] shows how to stream MJPEG to a browser.
-in video is an example of that with a few ov modules with ribbon connectors
-{{youtube>iw5b26QmWbE?medium}}
-here is a [[https://www.reddit.com/r/esp32/comments/92423z/m5stack_esp32_camera/ea7yt4v/|reddit]] comment about working with the ov2640 and the arduino platform
-relate to all the above.
-[[https://hbvcamhuibervision.pt.aliexpress.com/store/3018090|{{:pasted:20181130-000246.png}}]]
-==== compare ====
-ESP32-CAM
-  *SDcard storage
-M5Satck
-  * serial to usb
-  * charging circuit
-  * charge connector
-  * grove connector
-  * form factor
-  * no PSRAM ?!
-  * [[https://github.com/m5stack/M5-Schematic/blob/master/Units/m5camera/hardware_diff_with_ESP32CAM_M5Camera.md|pinout diff with esp32-cam]]