Sending Inertia Motion Unit Data of Arduino Nano BLE 33 over Bluetooth BLE

Sebastian Tomczak has developed an Arduino sketch and Max patch which takes the inertia motion unit data of the Nano BLE 33 and sends it via Bluetooth BLE using the ArduinoBLE library.

The data is transferred as a set of BLE Characteristics as a BLE Service. The Max patch scans for the BLE device, connects to it and then subscribes to the data streams. The output can be normalised, smoothed and then routed via MIDI to music software such as Ableton. The Max patch uses the max-ble external.

With Bluetooth Low Energy (BLE), devices do not need to pair in order to communicate data. Instead, a paradigm of central and peripheral devices is used. Central devices scan for Peripheral devices and initiate connections. Peripheral devices advertise their BLE Services and wait for a Central device to connect. In this example, the computer running the Max patch is the Central and the Arduino Nano BLE 33 is the Peripheral.

A given Service on a Peripheral device is made up of one or more Characteristics. A Characteristic contains one or more bytes of data and may be part of a standard profile or a generic type with customised data length. Each Service and Characteristic has a UUID unique identifier that is either a 16-bit or 128-bit string. The Arduino BLE library contains a number of functions to create a BLE Service and Characteristic.

Read more in the post here. Get the Arduino code here, the Max patch here and the 4bf subpatch here.

Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here:

Join Adafruit on Mastodon

Adafruit is on Mastodon, join in!

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Join over 36,000+ makers on Adafruit’s Discord channels and be part of the community!

CircuitPython – The easiest way to program microcontrollers –

Maker Business — “Packaging” chips in the US

Wearables — Enclosures help fight body humidity in costumes

Electronics — Transformers: More than meets the eye!

Python for Microcontrollers — Python on Microcontrollers Newsletter: Silicon Labs introduces CircuitPython support, and more! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — Guardian Robot, Weather-wise Umbrella Stand, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — #NewProds 7/19/23 Feat. Adafruit Matrix Portal S3 CircuitPython Powered Internet Display!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at !

No Comments

No comments yet.

Sorry, the comment form is closed at this time.