Will the Arduino mini 3.3v give enough stable power for nRF ?

[ahmedadelhosni]

Hello all,

As mentioned in topic, I want to know if the 3.3v version will give enough and stable power for the nrf ?
Also what is the totoal maximum power consumption which the mini can support if I want also to power up transistors or TRIACs ?

Thank you.

[rvendrame]

@ahmedadelhosni , for a definitive answer you must check what kind of regulator your board has, as well as how much each component of your circuit will consume.

The official pro-mini uses an MIC5205 voltage regulator that can deliver maximum of 150mA.

Most clones uses a cheaper regulator (such as the 100mA LP2981 that I found in my pro-minis).

The official nRF24l01 radio consumes about 15mA while transmitting/receiving. You have to add on top of it the arduino itself, as well as any other components that you are powering up.

And to be on safe side I would not use more than 60-70% of nominal regulator's output.

Hope it helps...

[ahmedadelhosni]

@rvendrame Great. That's so clear.
Thank you.

[LastSamurai]

@rvendrame Does the mysensors library use high power modes on the nrf? As far as I remember these can use much more power.