Arduino Radio Network?

Question

Arduino

Good day everyone! I would like to make a radio tag for car or motorcycle alarms.
1) The receiving part that is installed in the Auto \ Moto transport will be on the Arduino nano
2) The beacon will be made from the nrf24l01 + Digispark ATTINY85 module
Questions
1) Is it possible or has anyone already assembled nrf24l01 + Digispark ATTINY85 on their board together for a smaller size.
2) Is it possible to assemble the nrf24l01 module without using the Digispark ATTINY85 (or similar) so that it sends its own ID to the network?
3) Is it possible to organize any event on the receiver according to the signal level of the receiver. That is, at a distance of up to 5 meters, everything is OK and you need to turn on the first relay. And at a distance of more than 5 meters, turn off the relay. Distance refers to signal strength.
4) I could not find a description of the library for the nrf24l01 module in Russian. Does anyone have a link or description?

Answer 1

4) What library are you talking about? For RF24, here is a description with examples: nrf24l01.pp.ua/nrf24l01/2-4ghz-rf-biblioteka-rf24 But it is better to focus on native docks, there is
nothing complicated there: tmrh20.github.io/RF24/classRF24.html
Unfortunately, nrf24l01 cannot measure the signal level.
1, 2) If you need to reduce the size, take some SoC of the CC2530 type, where both the processor and the radio part are in one case. This also solves the problem of item 3.