Posts Tagged ‘bluetooth’

App note: Noise suppression for wireless headphones

Sunday, January 13th, 2019

Wireless headphone interference investigation from muRata. Link here Recently, the popularity of wireless headsets has been growing as the number of situations where people “play sports while listening to music” increases. Bluetooth is frequently used for communication between smartphones and headsets. However, audio can skip due to communication errors, so...

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Vintage headset conversion

Monday, October 22nd, 2018

Quinn Dunki wrote a great article describing the conversion process of a 1980s-era Earmark into a bluetooth headset: The obvious thing is to convert it to a bluetooth headset for modern use, right? As I previously warned, converting a 1980s-era air traffic control headset into bluetooth headphones is probably the...

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Developing smart sensor solutions

Wednesday, May 11th, 2016

Ken Boak has published a new build, the MSP430i2041 bluetooth smart sensor board: One of our existing products at work, which I designed about 2 years ago, makes use of the STM32F373 microcontroller interfaced to an AD7767 24-bit sigma-delta ADC, to create a smart sensor. Whilst at the time of development, (Feb...

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Posted in MSP430, sensors | No Comments »

An Android reflow controller that anyone can build

Monday, August 24th, 2015

Andy Brown published a new build, an Android reflow controller:  The only surface mount device on this PCB is the MAX31855 and it has a low number of generously spaced pins. I eschewed my hot air gun, previous reflow oven and hot plate in favour of a plain old iron...

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Posted in Android, DIY | No Comments »

App note: Simple wireless bluetooth stereo audio system for outdoor use

Sunday, July 12th, 2015

Old app note from Maxim Integrated on DIY portable bluetooth audio system. Link (PDF!) here When people want portable music, they usually rely on battery-powered audio devices. With a bit of engineering blood (or curiosity) running in your veins, it is not difficult to build a wireless Bluetooth® stereo audio...

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Posted in app notes | 2 Comments »

TruPlay- Hacking into an OVC3860 based bluetooth A2DP adapter using the MSP430

Monday, July 6th, 2015

TruPlay -  controlling bluetooth A2DP devices using MSP430and OVC3860  from Rohit Gupta: I wanted it to 3D Print a new case but couldn’t so, made a PCB that would sit on the Top of the adapter and command it. I was lucky to have a 3.3V Regulator inside the adapter...

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Posted in hacks, MSP430 | No Comments »

Arduino compatible LightBlue Bean adds Node-RED support

Sunday, March 29th, 2015

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Posted in Arduino, R-Pi, RF, wireless | No Comments »

Blueprintf – a bluetooth serial monitor

Thursday, January 15th, 2015

Bob Alexander of Galactic Studios made this bluetooth serial monitor for embedded microcontroller projects, the Blueprintf: One way of debugging microcontroller-based projects is to send messages out the UART serial port. Then, a UART-to-USB interface can feed the messages into your PC for display. But I wanted a small, portable device...

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Posted in DIY, gadget | No Comments »

App note: Bluetooth smart communication using Microchip RN4020 module and 16-bit PIC microcontroller

Saturday, December 27th, 2014

An app note from Microchip, Bluetooth smart communication using Microchip RN4020 module and 16-bit PIC microcontroller (PDF!): This application note provides the following: • Framework for any of the user application platform using RN4020 module and PIC24FJ series of microcontrollers. • Specifically an interface of RN4020 module with PIC24FJ128GA010 microcontroller. •...

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DIY bluetooth door lock

Thursday, September 25th, 2014

An open source bluetooth door lock,  check out  the step by step tutorial here at Make: To open the lock, we will use the app LightBlue. It has a section called the Sandbox, that lets you control the LightBlue Bean without having to program your own iOS app. When the LightBlue Bean receives...

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Posted in DIY, hacks | 2 Comments »

WP8 bluetooth RGB LED controller with pic12f1572 16bit pwm

Tuesday, September 9th, 2014

Diego shares his latest project a WP8 bluetooth RGB LED controller with pic12f1572 16bit pwm in the forum: I made a Bluetooth board card with a pic12f1572, this pic can drive 3 output pwm at 16bit. Project files are available at Github. Via the forum.

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Posted in LEDs, PIC | No Comments »

Adding bluetooth to an EEG headset for mind-controlled projects

Monday, September 8th, 2014

An instructables on adding bluetooth to an EEG headset for mind-controlled projects by AndreLe: I had serial bluetooth module HC-06 lying around and decided to see if I could integrate the two and skip the Arduino altogether. Turns out, it works almost as good as the commercially available NeuroSky MyndWave...

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BlueMatrix – Bluetooth controlled LED matrix

Monday, May 19th, 2014

Luca Dentella has published his latest project: BlueMatrix. It's a portable LED matrix display based on Arduino Uno, powered by a Lipo battery and connected via Bluetooth to a personal computer or an Android smartphone. I've also developed the controlling app for Android, available on Google's PlayStore. All the schematics,...

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Posted in Android, Arduino, LEDs, wireless | 1 Comment »

Tutorial: Android and Bluetooth

Tuesday, May 6th, 2014

Luca Dentella has published the last part of his tutorial explaining how to develop Android applications that "talk" with embedded devices using Bluetooth. The tutorial covers basic tasks like enabling/disabling the phone's Bluetooth adapter to advanced ones like using separate threads for blocking I/O operations. Further information and earlier tutorial...

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Posted in Android, tutorials, wireless | No Comments »

DIY Arduino bluetooth programming shield

Tuesday, April 1st, 2014

Here's a how-to on making a DIY Arduino Bluetooth programming shield by Joshua Newell: If you’ve ever wished you could program your Arduino without lugging a USB cable around, wanted to put an Arduino project somewhere out-of-reach but still be able to easily upload changes to it, thought about building a...

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Posted in Arduino, DIY | No Comments »

BLE fun with Ubertooth: sniffing Bluetooth Smart and cracking its crypto

Wednesday, January 29th, 2014

Mike Ryan writes about his latest efforts in BLE hacking. Hot on the heels of Omri Iluz's BLE-sniffer-on-the-cheap, I decided to write up the BLE sniffer I built on Ubertooth. My sniffer highly robust, can capture data from connections, and is 100% open source. I also discovered a vulnerability in...

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Posted in code, encryption, hacks, RF, wireless | 1 Comment »

Bluetooth shield for Arduino

Tuesday, October 1st, 2013

Boris Landoni from Open Electronics writes about a new open source bluetooth shield for Arduino: Here’s an application to control the brightness of an RGB LED strip wirelessly (via Bluetooth) using a smartphone. The whole project is presented in a dedicated Bluetooth  shield for Arduino and a RGB shield.

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Posted in Arduino, open source | 5 Comments »

Mobile phone/Arduino Bluetooth interface

Monday, September 30th, 2013

Kerimil has created another app for interfacing mobile phones and microcontrollers through Bluetooth. This time it's a simple phone controlled RGB LED. The Arduino sketch/code can be found in his Arduino Forum post. The Android .apk file can be downloaded from Google docs, as well as a zip file containing...

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Posted in LEDs, wireless | 4 Comments »

CxemCAR 2 – Android controlled RC car with video, Bluetooth, WiFi

Sunday, August 18th, 2013

Johnik has developed the CxemCAR2 project for controlling an RC car using WiFi and Bluetooth. "On the Internet there are many articles on the use of RC cars with IP or Web-based camera. But most of them used a laptop or an internal router with Open-WRT or DD-WRT firmware. Viewing...

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Posted in Android, Arduino, robotics | 1 Comment »

TI Bluetooth Low Energy (BLE) training

Friday, August 2nd, 2013

Ti is offering free online training on Bluetooth low energy (BLE) devices. The materials are designed to cover topics appealing to a broad spectrum of experience levels from basic to advanced. You can find more information and start the training at TI's

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Posted in tutorials, wireless | 2 Comments »

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