i/o expansion shield, change digital vcc to 5v? help a newbie out!
Sjinta 2011-12-27 19:30:47 5395 Views4 Replies I've just recently started out with the arduino and have had my first "hello world" like experiance.
I have a background in programming but am new to the hardware part.
At the moment i'm trying to get my 5v [url=http://www.dfrobot.com/index.php?route=product/product&path=36_55&product_id=114]range sensors[/url] to work on the[url=http://www.dfrobot.com/index.php?route=product/product&path=35_39&product_id=264] i/o expension shield[/url] but the digital input pins use a vcc of 3.3 which is to low for these sensors.
Is there a (relatively easy) way to change this to 5v? or do i have to just strip off the 5v wire and attach that somewhere else?
I have a background in programming but am new to the hardware part.
At the moment i'm trying to get my 5v [url=http://www.dfrobot.com/index.php?route=product/product&path=36_55&product_id=114]range sensors[/url] to work on the[url=http://www.dfrobot.com/index.php?route=product/product&path=35_39&product_id=264] i/o expension shield[/url] but the digital input pins use a vcc of 3.3 which is to low for these sensors.
Is there a (relatively easy) way to change this to 5v? or do i have to just strip off the 5v wire and attach that somewhere else?
2012-01-03 01:28:37 i got it reattached, and using a 11.4v battery it works just fine! My robot car thingy is driving a bit too fast now though :P Sjinta
Sjinta 
2011-12-30 22:37:14 crap, i just took the sensor pin thing appart to attach it somewhere else, ah well, at least i know the usb should be the problem now! Sjinta
Sjinta 2011-12-28 10:33:46 Hi Sjinta,
Welcome to the forum!
The range sensors are fully compatible with the IO Shield. The Digital IO side labeled "D VCC GND" should be supplying 5Vdc from "VCC" If that is not the case then their might be something wrong with your setup. Try adding some external power source for the Arduino or changing your USB cable.
The only place where the IO Expansion shield provides 3.3v is at the 3.3V pins next to the reset button. Otherwise all things labeled "Vcc" are by standard 5V. IE Vcc=5Vdc.
Hector
Welcome to the forum!
The range sensors are fully compatible with the IO Shield. The Digital IO side labeled "D VCC GND" should be supplying 5Vdc from "VCC" If that is not the case then their might be something wrong with your setup. Try adding some external power source for the Arduino or changing your USB cable.
The only place where the IO Expansion shield provides 3.3v is at the 3.3V pins next to the reset button. Otherwise all things labeled "Vcc" are by standard 5V. IE Vcc=5Vdc.
Hector 