Datasheet

Configuration!

Which board do you have?

There's a few products under the Bluefruit name:

If you are using the Bluefruit LE Shield then

you have an SPI-connected NRF51822

module. You can use this with Atmega328

(Arduino UNO or compatible),

ATmega32u4 (Arduino Leonardo,

compatible) or ATSAMD21 (Arduino Zero,

compatible) and possibly others.

Your pinouts are Hardware SPI, CS = 8,

IRQ = 7, RST = 4

Bluefruit Micro or Feather 32u4

Bluefruit

If you have a Bluefruit Micro or Feather

32u4 Bluefruit LE then you have an

ATmega32u4 chip with Hardware SPI, CS =

8, IRQ = 7, RST = 4

Feather M0 Bluefruit LE

If you have a Feather M0 Bluefruit LE then

you have an ATSAMD21 chip with

Hardware SPI, CS = 8, IRQ = 7, RST = 4

Before you start uploading any of the example sketches, you'll need to

CONFIGURE the Bluefruit interface - there's a lot of options so pay close attention!