Hi,
I am buying this arduino -> http://produto.mercadolivre.com.br/MLB-725032529-arduino-pro-mini-33v-8-mhz-_JM
And I want to know if it provides 3.3v at VCC pin.
Also I would like to know if I can supply power to this arduino from the RAW pin with only 3.5 v? Can 3.5 v supply this arduino at RAW pin?
Don't buy any modules without data sheets!
There exist several variations of the Pro Mini. E.g. my boards have an on board 3.3V regulator, powered from RAW, but can work at any voltage (up to 5V) supplied to Vcc. Other boards with cheap regulators don't allow to apply power to Vcc, or have a solder bridge to disconnect the regulator.
In any case the RAW voltage should be above 4V, see the data sheet of your board.
The regulator typically allows to draw about 100mA from the Vcc pin. If you need more current, disconnect the regulator if required, and supply 3.3V to Vcc from an external power source.
Did you already find the Portuguese forum section?
Thank you! I found the portuguese but there is no soo good people as there is in the english version 