IO16 output voltage issue

[Cathodion]

Hello fellows,

 

I'm measuring around 4.50 volts of output on the 16IO bricklet while the switch on the bricklet reading "3.3V <--> 5V" is switched to "5V".

 

Switching it to 3.3V results in a perfect 3.30 volts of output, but the 5V is really not even close. Is this a known issue?

 

Kind regards,

Geert Schuring.

[photron]

It's known and by design. Each Brick has a protecting diode in the 5V line feed from USB resulting in a 0.5V drop. To get "better" 5V output at the IO-16 you can use a Step-Down Power Supply.

[Cathodion]

Ok, thanks for the quick reply!