Controls a Wifi Bulb made by FeiCan http://www.feicanled.com/articleshow.asp?id=807 it uses the DreamColor App https://play.google.com/store/apps/details?id=com.feicanled.dreamcolor&hl=en Does NOT work with the Bluetooth version, only the Wifi. Should also work with the LED Strip. This Bulb is based on the familiar ESP chips.

I got the light bulb and tried to use it with the app, it crashed on my phone. I used an old android phone that worked, got it to connect to my wifi and it worked fine (when it didn't crash on old phone). I took it as a simple project to figure out how to make it work without the app. I have Android x86 in a Virtual Machine, and Wireshark to listened to the app and bulb communicate.

With Wireshark I found that it seemed to operate with UDP protocol in port 5000. I got some values to turn it on and off, then next to set it to various colors. Thanks to other projects that work in a similar way but different codes, I was able to make it work with a Raspberry Pi Zero I can turn the bulb on, off and set a specific RGB color, but not the fancy blink or other modes. Turning it on, off and set the color was more than enough for me.

To Controll your Bulb

• Use the App to connect to your wifi, for best results use an old android phone 4.x
• Find your bulb's IP address (ex. 192.168.1.62) Mac is 5c:cf:7f:#:#:#, or Expressif
• Install the linux utility xxd, it converts a string to hex dump. send the code with

echo "code" | xxd -r -p > /dev/udp/ip-address/5000

Key Code:

• Turn the Bulb on send 7e 04 04 01 ff ff ff 00 ef

• Turn the Bulb off send 7e 04 04 00 ff ff ff 00 ef

• Set the Bulb cool white send 7e 07 05 03 ff ff ff 00 ef

• Set the bulb any RGB color

                RR GG BB
   "7e 07 05 03 RR GG BB 00 ef"
  

change the corresponding value of RR, GG or BB in hex

to convert "warm white" 255, 172, 68 -> FF, AC, 44 -> "7e 07 05 03 ff ac 44 00 ef"

• On: echo "7e 04 04 01 ff ff ff 00 ef" | xxd -r -p > /dev/udp/192.168.1.62/5000
• Off: echo "7e 04 04 00 ff ff ff 00 ef" | xxd -r -p > /dev/udp/192.168.1.62/5000
• Change Color Warm White: echo "7e 07 05 03 ff ac 44 00 ef" | xxd -r -p > /dev/udp/192.168.1.62/5000
• Change Color Cool White: echo "7e 07 05 03 ff ff ff 00 ef" | xxd -r -p > /dev/udp/192.168.1.62/5000

if you get an error about folder not found, use "bash", not "sh" as sh does not have remote udp access unless you compiled it with a special option.

Now you can also use at or cron commands and set it on/off at specific time. I set up a sunset calculating program and then set an at command to turn it on at sunset daily, then use cron to turn it off at night.

Use code at own risk. (this is my first git)