Directly interface the PCM device, using low level native C programming. Play sounds by sending data to /dev/msm_pcm_out
Learn how to do a programmatic screen capture on Android, using the framebuffer and some native C code. See how to correctly save a BMP file.
Learn how to compile your C code to native Android executables, using Windows, Cygwin and the Android NDK in just 3 easy steps.
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.
Build a Half Wave Villard Cascade of 28 Stages. That means for 10KV in you get (in theory) 280KV out! An incredible voltage, perfect for physics experiments.
EM-11 is a magic eye tube, used in old radios for tunning. See some schematics on how to use this tube, for some green, fluorescent effects!
A tutorial on how to build a custom adapter for an Android Listview control, and how to catch the onClick event correctly.
Includes source code.
A homemade/DIY security system using a webcam, a low power server and a surveillance software.
See the real limit for receiving a SDP bluetooth device attribute in the SDP_DISC_ATTTR_VAL structure for the Broadcom Bluetooth Stack.
The DRSB-01 is a simple Geiger Counter device that can be used to detect normal vs. dangerous levels of ionizing radiation (gamma and beta).
Skype opens the TCP port 80 for unknown purposes. It doesn’t ask for user’s permission. This “feature” however creates problems when running legitimate software like an apache server. Think twice when installing “bells and whistles” software like Skype, Messengers, and others.
See how to build a case for a mini-itx computer board. A lot of processing power in a tiny box.
Some details on the ‘Not a valid Pocket PC application’ error resulting from calling the IsStackServerUp API in Windows Mobile Bluetooth Broadcom stack applications.
The CDV700 dosimeter variant 6B (newer) and a few mods to improve functionality: audio connector and bnc connector.
A short review on the Radex RD1706 dosimeter, how good it is, and how can it be compared to other dosimeters, eg. the Terra-P MKS-05.
A variable 0..30V power supply for max 20ampers! See how to handle all the power and build your own reliable lab power supply.
Learn to create a tab control on Android, without the XML layout. Add an image to the tab control in a few easy steps.
Understand what a random number is , how important the chaos is, and how to understand a sequence of numbers that seems to have no meaning.