I'm building a project which uses an Arduino nano, 2 micro servos and an nrf24l01 with an adapter. The nrf24l01 has an antenna attached to it. How much power do I need, and how do I supply it? Preferably with lipo batteries.
I am controlling the servos on the nano with a joystick connected to a uno via nrf24l01 connected to an adapter.
I could control one servo with the joystick wirelessly by connecting the nrf24l01 in the uno and nano to the 5v pin in the uno.
My goal is to control the 2 servos connected to the nano with a joystick connected to the uno via nrf24l01.
You start by looking at the data sheets for each component to find the voltage range and typical and maximum current they draw. If you need help with that, post the links here.
What I can say from memory is
There are many types of arduino called Nano, they do not all run at the same voltage. You have not mentioned which type you plan to use
The "Classic" Nano 3 runs at 5V, so cannot by powered by a li-po battery, which is only 3.7V. You would need to boost the li-po up to 5V. It would be better to replace the Nano with an Arduino that runs at 3.3V such as Pro Mini or Pro Micro.
Classic nano has a 3.3V pin but this cannot provide much current. Not enough to power nrf24l01.
Is there another way to power my project while still using the nano? Can I connect a 9v battery directly to the USB port of the nano to power it?
What if I connect two lipo batteries in series?
This is the information about the board posted by the seller: * Microcontroller Atmel ATmega328 Operating Voltage (logic level): 5V Input Voltage (recommended): 7V ~ 12V Input Voltage (limits): 6V ~ 20 V
Digital I/O Pins: 14 (of which 6 provide PWM output) Analog Input Pins: 8 DC Current per I/O Pin: 40mA
Flash Memory: 32KB (ATmega328) (of which 2 KB used by bootloader) SRAM: 2KB (ATmega328) EEPROM: 1KB (ATmega328) Clock Speed: 16MHz