I have been thinking to use the Arduino Nano 33 BLE Sense Rev2 as avionics in a model rocket, but i am a bit confused when it comes to powering this board using VIN and GND. I am thinking of putting a 3.7V Lipo in which gets stepped down to 3.3V then into the VIN and GND, but i am just making Shure this would work.
i will be using the a battery from adafruit along with a buck convertor from the same company.
Are you running out of lines and words in your drawing package ?
Does the controller datasheet tell such a low voltage into Vin is okey?
I would believe so,
I don't mark words but to the best I can say....
You don't need "to believe". The datasheet tells the facts!
Operating voltage... Applied where? Many controllers have a Vin of 5 volt, an internal 3.3 volt controller and all logic signals being 3.3 volt.
The UNO uses 5 volt logic but the minimum Vin is 7.5 volt, max is some 12 volt.
I apply the same thinking to Your 3.3 volt logics controller.
I looked at the data sheet and it is not 5V ready and 3.3v must be applied to the VIN, Althogh the nano is capable of 5V the Board i will use can’t handle it. To what i am understanding, this setup would work?
Sorry if im not understanding well, as i am new to the Arduino platform, and thanks for the help!
I don't know where you're getting the idea that 3.3V must be applied to Vin. The schematic for the Nano 33 BLE Sense shows Vin of the Nano feeding the input to an MP2322 buck converter, the output of which is 3.3V. So what might work is to apply the battery output directly to Vin. There might be enough headroom to still produce 3.3V.
Sorry but I don't understand/agree to Your post. It's unclear to me what You try to tell. As I don't know Your controller by heart, please refer to the datasheet lines.
"I think" is not accepted without proof.
Words are never the best way. Facts from datasheet are.
Just for clarification, i should not need to use the buck converter? To what i understand i should be able to connect the battery directly to vin and it will not damage the board, correct me if im wrong.
You definitely don't need a buck converter. The Nano already has a buck converter, fed by Vin. The Rev 2 datasheet says Vin is nominally 4.5V to 21V. From that, feeding Vin directly from the battery would not work. But I don't see anything in the datasheet for the buck converter that specifies that 4.5V. Anyway, if the direct feed doesn't work, you could use a boost converter to convert the battery voltage to 5V, then feed that into Vin. Or you could use two cells in series, and feed that directly into Vin.
The datasheet statement about 5V intolerance refers to the GPIO pins.
Thank you for the help!
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