March 22, 2023

PocketMagic

Where Technology meets magic

Introduction to CC2541

October 3, 2016

Exploring the versatile AVR microcontrollers or the powerful STM32 counterparts were amazing experiences which resulted in interesting projects, many of them presented on this blog. For a hardware designer, the multitude of options can be overwhelming and this is a good thing. In regards to BLE (Bluetooth Low Energy) applications, TI’s CC254X solutions are appealing to say the least. “The CC2541 is a power-optimized true system-on-chip (SoC) solution for both…

Digital bench power supply

April 8, 2015

As a follow up to one of my earlier projects, the Variable regulated power supply, initially designed to deliver 0..30Volts at up to 10Amps, I have decided it was time for an upgrade. I kept the enclosure and the nice 250W toroidal transformer, and am reshaping everything as a new digital power supply with regulated voltage and current, short circuit protection, lcd display, buzzer for various alarms, temperature sensor on…

Building a robot – Make the robot follow you

February 7, 2013

Building an autonomous robot using a rover platform and advanced electronics is not an easy job. Kevin asked me to build a robot that would follow its user. A companion, very much like a robo-dog. See the project log here.

DIY/Homemade Radiation Geiger Dosimeter

December 1, 2012

A digital dosimeter design that can be used with multiple geiger tubes, constructed around the atmega8 microcontroller and a 2×16 LCD. Equipped with a radio Bluetooth module for remote operation.

Projection keyboard

May 26, 2012

The laser keyboards use laser and infra-red technology to create the virtual keyboard and to project the hologram of a keyboard on a flat surface.

Anoto Bluetooth Digital Pen on Android OS

May 26, 2012

A digital pen solution for Android OS.

Android BluetoothClass Major Service Classes, Minor and Major Device Classes

October 26, 2011

Learn how to get over some limitations in Android Bluetooth SDK to read the Bluetooth COD (Major, minor classes) for a given Bluetooth device.

Android Bluetooth controlled robot – Part 1

November 1, 2010

Learn to connect a bluetooth module to an ATMega micro controller via the UART serial interface and even further, discover it using a bluetooth enabled Android phone. The 9600bps serial link established, can than be used to exchange data: read sensors or control the robot.

WinCE Broadcom stack FindAttribute SDP_DISC_ATTTR_VAL 256Bytes limit

See the real limit for receiving a SDP bluetooth device attribute in the SDP_DISC_ATTTR_VAL structure for the Broadcom Bluetooth Stack.

August 13, 2010

WinCE Bluetooth Broadcom stack ‘Not a valid Pocket PC application’ Error

July 22, 2010

Some details on the ‘Not a valid Pocket PC application’ error resulting from calling the IsStackServerUp API in Windows Mobile Bluetooth Broadcom stack applications.

More on Android’s Bluetooth

June 15, 2009

See how to get more Bluetooth functionality on your Android device then the interface offers you. Discover nearby bluetooth devices, and see what interaction options you’ve got.

HCI Commands list

List of HCI commands.

June 15, 2009

Atmega8 with Bluetooth radio module

May 27, 2009

Add Bluetooth functionality to your microcontroller project (atmega8).

Zeemote’s JS1, an innovative wireless controller

February 13, 2009

Zeemote has released mobile controller for games, this article shows how you can use it for remote desktop control!

ITON Bluetooth Keyboard and Mouse

November 7, 2008

A review on two bluetooth HID (Human input device) devices, manufactured by ITON.
The PA-BK02 bluetooth keyboard and the PA-BTM02 bluetooth mouse are some nice wireless alternatives to your current input hardware.

Bluetooth BlueJacking

September 16, 2008

A short article on BlueJacking, which is sending unsolicited messages remotely to Bluetooth enabled devices.

Controlling the Radio Devices

September 2, 2008

Introduction The number of mobile devices manufacturers is quite big at the moment, so for the developers there are many platforms out on the market and their software must function properly on each of them. Most of the programming aspects are covered by the available APIs. General things like drawing a fancy interface or having a minimum of functionality will work without any issues on all the Windows Mobile platforms….

Hacking a Mesada GPS Unit

September 1, 2008

An article about adding extra bluetooth functionality on a gps unit running wince 5.0