Bluetooth LE Sensor Nodes to Raspberry Pi WiFi Bridge

Send data from Bluetooth LE sensors to Adafruit IO with a Raspberry Pi bridge

by John Park and Brent Rubell

published March 07, 2020, last edited January 22, 2025

posted in Raspberry Pi Internet of Things - IOT/ Adafruit IO Internet of Things - IOT/ Bluefruit / BLE

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Beginner

Project guide

Overview

Use sensor-packed Bluefruit boards and a Raspberry Pi to build a network of sensors that send data to Adafruit IO!

This project takes advantage of CircuitPython running on the Feather Bluefruit Sense and CLUE boards (any nRF52840 Adafruit board will work) and Python running on the Raspberry Pi.

The Pi receives advertised BLE sensor data from the Feather and CLUE and then sends that data over WiFi or Ethernet to your Adafruit IO feed.

Its a super easy way to make a wireless sensor node, using the built in wireless/networking capabilities of the Raspberry Pi!

Parts

You can use any of the Adafruit nRF52840 boards and sensors you like. We'll show how it works with the Feather Sense and CLUE boards, since they pack so many sensors right on board.

Angled shot of blue, rectangular, microcontroller.

Adafruit Feather nRF52840 Sense

The Adafruit Feather Bluefruit Sense takes our popular Feather nRF52840 Express and adds a smorgasbord of sensors...

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Animated GIF showing CLUE board displaying data from the many on-board sensors.

Adafruit CLUE - nRF52840 Express with Bluetooth® LE

Do you feel like you just don't have a CLUE? Well, we can help with that - get a CLUE here at Adafruit by picking up this sensor-packed development board. We wanted to build some...

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$44.95

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Raspberry Pi 4 Model B

The Raspberry Pi 4 Model B is the newest Raspberry Pi computer made, and the Pi Foundation knows you can always make a good thing better! And what could make the Pi 4 better...

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Official Raspberry Pi Power Supply 5.1V 3A with USB C

The official Raspberry Pi USB-C power supply is here! And of course, we have 'em in classic Adafruit black! Superfast with just the right amount of cable length to get your Pi 4...

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Angled shot of Raspberry Pi 3 - Model B+

Raspberry Pi 3 - Model B+ - 1.4GHz Cortex-A53 with 1GB RAM

The Raspberry Pi 3 Model B is the most popular Raspberry Pi computer made, and the Pi Foundation knows you can always make a good thing better! And what could make the Pi 3...

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USB cable - USB A to Micro-B

This here is your standard A to micro-B USB cable, for USB 1.1 or 2.0. Perfect for connecting a PC to your Metro, Feather, Raspberry Pi or other dev-board or...

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Raspberry Pi Zero W Basic Pack - Includes Pi Zero W

Remember those cereal commercials that would always say, "part of a complete breakfast"? Well the Pi Zero's a lot like that bowl of cereal - while it's...

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Optional Parts

If you want to use, say, a Feather nRF52840 plus some plug-in STEMMA QT breakouts, here are some great options:

Adafruit Feather nRF52840 Express

The Adafruit Feather nRF52840 Express is the new Feather family member with Bluetooth® Low Energy and native USB support featuring the nRF52840! ...

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SparkFun Qwiic / Stemma QT FeatherWing with three QT boards plugged into the top

SparkFun Qwiic / Stemma QT FeatherWing (Shield for Thing Plus)

The SparkFun Qwiic FeatherWing (Shield for Thing Plus) provides an easy-to-assemble way to add the

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Angled shot of STEMMA QT / Qwiic JST SH 4-pin Cable.

STEMMA QT / Qwiic JST SH 4-pin Cable - 100mm Long

This 4-wire cable is a little over 100mm / 4" long and fitted with JST-SH female 4-pin connectors on both ends. Compared with the chunkier JST-PH these are 1mm pitch instead of...

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STEMMA QT / Qwiic JST SH 4-Pin Cable - 50mm Long

This 4-wire cable is 50mm / 1.9" long and fitted with JST SH female 4-pin connectors on both ends. Compared with the chunkier JST PH these are 1mm pitch instead of 2mm, but...

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Adafruit DPS310 Precision Barometric Pressure and Altitude Sensor

Adafruit DPS310 Precision Barometric Pressure / Altitude Sensor

How high are you right now? If you had a precision altitude sensor, you would know for sure! The DPS310 sensor from Infineon a high-precision barometric sensor, perfect for measuring...

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$6.95

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Adafruit PCT2075 Temperature Sensor with STEMMA QT / Qwiic cable plugged into a Feather showing the temperature

Adafruit PCT2075 Temperature Sensor - STEMMA QT / Qwiic

The Adafruit PCT2075 Temperature Sensor is a 'code compatible' drop-in replacement for a very...

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$4.95

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Adafruit VCNL4040 Proximity and Lux Sensor - STEMMA QT / Qwiic

The VCNL4040 is a handy two-in-one sensor, with a proximity sensor that works from 0 to 200mm (about 7.5 inches) and light sensor with range of 0.0125 to 6553 lux.We've all...

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Adafruit APDS9960 Proximity, Light, RGB, and Gesture Sensor

This breakout is chock full o' sensors! Add basic gesture sensing, RGB color sensing, proximity sensing, or ambient light sensing to your project with the Adafruit...

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Adafruit BMP280 I2C or SPI Barometric Pressure & Altitude Sensor

Bosch has stepped up their game with their new BMP280 sensor, an environmental sensor with temperature, barometric pressure that is the next generation upgrade to the...

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$9.95

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small, rectangle-shaped, BME280 temperature humidity pressure sensor breakout board.

Adafruit BME280 I2C or SPI Temperature Humidity Pressure Sensor

Bosch has stepped up their game with their new BME280 sensor, an environmental sensor with temperature, barometric pressure and humidity! This sensor is great for all sorts...

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$14.95

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Page last edited March 08, 2024