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Yes, you can. The mirf library is using the regular arduino functions pinMode and digitalWrite to manipulate the pins. So A0 and A1 should work as expected. Please note that when you use SPI (which t …

It seems the CE pin is only used for TX, or to put it into standby. I think you can just connect it to VCC. The CSN is required for SPI. PS this RF24 library supports using the same pin for both CE …

There is no led. But you can use the isChipConnected function in the RF24 library

DR1 is MISO DAT is MOSI Though I'd advice using the RF24 library, as it's a lot more recent than the one from 2009 you linked to.

Remove all delays except the one after startListening. You could replace it with a "wait for radio.available to be true OR 50ms to have passed" piece of code. There is no need to wait for 50ms if th …

Increasing stability will increase the (usable) range. At least a bit. You could try decreasing the packet size, to make it even more reliable. There is no way to increase the output-power (only decre …

I don't see any reason for doing this. Multiple devices sending data at the same time will cause collisions irrespective of the pipe-nr they are using. Pipe is also a not very accurate name for wh …

You can pass theRF24.available function a pointer to a variable. The available function will write the pipe-number of the message to that variable. An example can be found in the documentation

There are some 10pin adapter boards floating around. See e.g. nrf24l01 (8pin) + adapter board (10pin) oops? Their pinout looks to be the following.

Yes. They call it a band, because the nRF24L01 can operate on frequencies from 2.400GHz to 2.525GHz It's like talking slower to someone. It makes it easier to distinguish the signal from the noise. …

When using SPI, pin 10 should never be used as an INPUT. Otherwise the Atmega can go into SPI Slave mode. But you use pin 10 as the RX pin. Just swap pin 9 and 10, and update your code accordingly. …

The NRF24L01+ has inputs that are 5V tolerant! So you only need to provide 3.3V on the Vcc pin of the module, which you can do by putting a voltage regulator between it, and the 5V of the Trinket. So …

The ATTiny85 doesn't support USB. You can bitbang USB using the V-USB library. Kind of a hack, but it does work. An ATMega328 (used on the UNO) can do the same thing. So the ATMega328 would be an opti …

You can connect an external antenna to pin 8 on that module. Just use a piece of wire that is 17.3cm long. But since the range is that bad to start with, probably means it isn't tuned very well. I'd r …