I have problem with control led use android.. because node red on my android and raspberrypi have a different server/ip.. how to make same server at my raspberry pi node red and my android node red ?

Hi.
If you have different installations of Node-RED in different places, they will have different IP addresses because they are installed on different servers.
 
Please follow the instructions of the Smart Home eBook carefully to understand how it works.
 
To access the Node-RED that is running on Raspberry Pi on your smartphone, you just need to open a web browser page and type the Node-RED IP address followed by :1880.
 
Regards,
Sara

But on my android i must install node red with termux or not ?
Because before i am install node red on my android with termux i am try to open on my browser android with similar ip but my browser on my android

This site cannot be reached

No.
You don’t install node-red on your smartphone.
That is not mentioned anywhere in the eBook.
Regards,
Sara

Oke i am to try open node red on my browser android similar with ip raspberry pi but result is this site cannot be reached.. i am already connect with same wifi on my android and my rasoberry pi.. but i use hotspot on my other phone.. not wifi

All devices must be on the same network.
Are they on the same network? If not, you won’t be able to access Node-RED.
If you want to access from any device regardless of its network, you need to follow Module 9.
Regards,
Sara

Yes i am use with same network.. with same hotspot network, between raspberry pi and my android phone.. i am use hotspot on my phone for wifi.. it’s work sara ? If i use just hotspot on my phone 

I’m sorry, but your question is a bit confusing.
What matters is that all devices are connected to the same network. If you have a hot spot, all devices should be connected to that hot spot.
Regards,
Sara