The amount of voltage which a nRF51822 GPIO pin can source?

RE: The amount of voltage which a nRF51822 GPIO pin can source?

ketiljo — Thu, 20 Sep 2018 12:40:59 GMT

Just about any modern LED will have enough light at 5 mA, but the one used in the nRF51-DK is this one.

Reference layout can be found here.

RE: The amount of voltage which a nRF51822 GPIO pin can source?

BeaconBLE — Thu, 20 Sep 2018 11:44:40 GMT

Which led do you guys use in your development board can you give me a BOM for that if possible? Also, do you have a reference layout design of the nRF51DK?

RE: The amount of voltage which a nRF51822 GPIO pin can source?

awneil — Thu, 20 Sep 2018 11:24:22 GMT

The specifications are in the Product Specification (ie, the "datasheet"):

www.nordicsemi.com/.../nRF51822

RE: The amount of voltage which a nRF51822 GPIO pin can source?

ketiljo — Thu, 20 Sep 2018 11:21:29 GMT

A LED should be ok, provided it draws less than 5 mA (GPIO in high-drive). For anything more, like the vibrator motor, you need a transistor.