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Topic: building and arduino breadboard and I need 3.3v (Read 1 time) previous topic - next topic

kelly7552

all,

I followed the directions at http://arduino.cc/en/Main/Standalone and i works great but I need 3.3v.  What would I need to add to get a reliable 3.3V setup for two sensors bmp085 and hhsomethingorother...

thanks,

Bill

robtillaart


AN UNO board has a 3.3 V output, otherwise you need an 7803 (google 7803 3.3V)
Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)

kelly7552

yeah,

I'm moving from an UNO onto a breadboard.  I already have a 5V voltage regulator on the breadboard, how would I add the  7803?
can I do this with a few capacitors and resistors off the 5V line?

robtillaart

Can be done from the 5V But I would connect the 7803 to your main powersupply (keep them separated)

Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)

kelly7552

When I used a 5v voltage regulator I used a 10 uF capacitor on the input middle pin and a 10 uF capacitor on the output side between power and ground would I need the same configuration for a 3.3V voltage regulator?

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