Since beginning of 2019 I’m participating in a project called “Low cost / low power sleep / WiFi Camera” so I purchased a couple of low cost boards, between them the LilyGO ESP 32 Camera.

BigIot.net is an interesting IOT API site

Not only an API but a very interesting infrastructure that is also possible to link BIGIOT with WeChat allowing to “chat” with your device and use it for Smart home or just to check what was the last image uploaded.
In my fork of this ESP32 Camera, since the original looks a bit unmaintained without even an issue board, I added some better display information:

https://github.com/martinberlin/ESP32-Camera BIGIOT_UpdateImage.ino

This example shows how to set up an automatic camera that takes pictures every 20 seconds and sends them like an API Post push to BigIot.
So far so good, it works at first glance. The issue is that BigIOT is all in Chinese and there is no english. So if you consider that a problem then you can stop here. I didn’t because I think the Chinese know hell about this and they are leading the IoT world for a good reason.

So I translated it as I could just to register and get this pieces of information:

#define BIGIOT_API_KEY "KEYHASH" ( 智能设备 Devices -> APIKEY)
#define BIGIOT_DEVICE_ID "INTEGER"
#define BIGIOT_INTERFACE_ID "INTEGER"

BigIOT Registration -> 注册

After registering you just have to open the activation Email and you are good to go. Just log in the Admin Panel and try to feel at home. Most important parts are:

智能设备列表 List of your Devices -> Add a “Camera device”

数据接口列表 List of your Inputs -> This is the Interface, so just make an “Upload interface”

And that are the two IDs you need, device ID and interface ID. After that and compiling this, the small camera is going to start pushing pictures to BigIOT and you can just click on the stats on the interface area and start checking the pictures when you are away.

Very good to control for example a 3D printer that you leave at home finishing something. This is the result:

ADDITIONAL INFO 

https://gitee.com/hejinlv/ESP32/blob/master/ESP32_bigiot_LED/ 
Here there is a great example on how to Listen to Commands to interact with WeChat