MicroMod nRF52840 Processor Hookup Guide

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Contributors: El Duderino, MAKIN-STUFF
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Introduction

The MicroMod nRF52840 Processor offers a powerful SoC (system on chip) combination of ARM Cortex-M4 CPU and 2.4 GHz Bluetooth transceiver in the MicroMod form-factor so you can easily plug it in to the Carrier Board of your choice. The specific nRF module on this Processor board features an integrated PCB antenna for the Bluetooth transceiver.

SparkFun MicroMod nRF52840 Processor

SparkFun MicroMod nRF52840 Processor

WRL-16984
$14.95

The nRF52840 module includes a BT 5.1 stack and supports Bluetooth 5, Bluetooth mesh, IEEE 802.15.4 (Zigbee & Thread) and 2.4GHz RF wireless protocols (including Nordic's proprietary RF protocol) allowing you to pick which option works best for your application.

On top of the processing power and Bluetooth capability of the nRF52840, this board features two I2C buses, 2 SPI buses, eleven GPIO, dedicated digital, analog, and PWM pins along with multiple serial UARTs to cover all your peripheral needs.

Required Materials

Along with your MicroMod nRF52840 Processor, obviously need a Carrier Board to plug your Processor into. SparkFun offers a variety of MicroMod Carrier Boards to fit your project. Below you can see a few options:

SparkFun MicroMod Input and Display Carrier Board

SparkFun MicroMod Input and Display Carrier Board

DEV-16985
$59.95
3
SparkFun MicroMod Weather Carrier Board

SparkFun MicroMod Weather Carrier Board

SEN-16794
$44.95
SparkFun MicroMod Data Logging Carrier Board

SparkFun MicroMod Data Logging Carrier Board

DEV-16829
$19.95
SparkFun MicroMod ATP Carrier Board

SparkFun MicroMod ATP Carrier Board

DEV-16885
$19.95

You'll also need a USB-C cable to connect the Carrier Board to your computer and if you want to add some Qwiic breakouts to your MicroMod project you'll want at least one Qwiic cable to connect it all together. Below are some options for both of those cables:

SparkFun Qwiic Cable Kit

SparkFun Qwiic Cable Kit

KIT-15081
$7.95
11
Flexible Qwiic Cable - 100mm

Flexible Qwiic Cable - 100mm

PRT-17259
$1.50
USB 3.1 Cable A to C - 3 Foot

USB 3.1 Cable A to C - 3 Foot

CAB-14743
$4.95
2
Reversible USB A to C Cable - 2m

Reversible USB A to C Cable - 2m

CAB-15424
$7.95

Depending on which Carrier Board you choose, you may need a few extra peripherals to take full advantage of them. Refer to your Carrier Board's Hookup Guide for specific peripheral recommendations.

Suggested Reading

The SparkFun MicroMod ecosystem offers a unique way to allow users to customize their project to their needs. Do you want to communicate with your MicroMod circuit via a wireless signal (e.g. Bluetooth or WiFi)? There's a MicroMod Processor for that. Looking to instead maximize efficiency and processing power? You guessed it, there's a MicroMod Processor for that. If you are not familiar with the MicroMod ecosystem, take a look here:

MicroMod Logo
MicroMod Ecosystem

We also recommend reading through the following tutorials if you are not familiar with the concepts covered in them:

Serial Communication

Asynchronous serial communication concepts: packets, signal levels, baud rates, UARTs and more!

Serial Peripheral Interface (SPI)

SPI is commonly used to connect microcontrollers to peripherals such as sensors, shift registers, and SD cards.

Installing Arduino IDE

A step-by-step guide to installing and testing the Arduino software on Windows, Mac, and Linux.

Logic Levels

Learn the difference between 3.3V and 5V devices and logic levels.

I2C

An introduction to I2C, one of the main embedded communications protocols in use today.

Bluetooth Basics

An overview of the Bluetooth wireless technology.

Hexadecimal

How to interpret hex numbers, and how to convert them to/from decimal and binary.

Getting Started with MicroMod

Dive into the world of MicroMod - a compact interface to connect a microcontroller to various peripherals via the M.2 Connector!