[MinnowBoard] 1.6V output on gpio pin

[Trevor Woerner]

Hi Ken,

On 02/05/16 19:28, Ken Tait wrote:
> The proper way to do this is something like this:
>
>
>
> connect LED_1 to your GPIO pin. You can use almost any small fet. I 
> don't recommend a transistor, if so you will have to put in a pull 
> down resistor to completely turn it off.
>
> Resistor R12 controls the current and therefore the brightness 
> depending upon the led you are using. Different colors require 
> different currents since their voltage drop is not the same. Try not 
> to go below about 120 ohms..10-20ma is sufficient to light most leds.
>
> Ken...hardware designer and software guy :-)

I like this idea of using the GPIO as the switch rather than the thing 
that drives the load itself :-) Thanks

Best regards,
     Trevor